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Motion PerceptionMotionPhotic StimulationPsychophysicsPerceptual DisordersPerceptionSensory ThresholdsDiscrimination (Psychology)Contrast SensitivityOptical IllusionsForm PerceptionDepth PerceptionPattern Recognition, VisualEye MovementsVisual PerceptionVisual PathwaysPursuit, SmoothFigural AftereffectVision, BinocularIllusionsVisual CortexRotationColor PerceptionNystagmus, OptokineticSpace PerceptionCuesLightingVision, MonocularVision DisparityDifferential ThresholdRange of Motion, ArticularVisual FieldsMovementTemporal LobeFixation, OcularOrientationAttentionOcular Motility DisordersMotion SicknessModels, PsychologicalOccipital LobeMagnetic Resonance ImagingModels, NeurologicalPsychosurgeryMesopic VisionVision, OcularReaction TimeSocial PerceptionSpeech PerceptionAdaptation, OcularPsychomotor PerformancePerceptual MaskingTime FactorsArtifactsAccelerationBrain MappingSaccadesAuditory PerceptionVisual AcuityAcoustic StimulationDiscrimination LearningMacaca mulattaPsychometricsAnalysis of VarianceTime PerceptionPain PerceptionWalkingImage Processing, Computer-AssistedFunctional LateralitySize PerceptionPitch PerceptionRetinaTouch PerceptionTaste PerceptionNeural PathwaysBrainAdaptation, PhysiologicalNeuronsOlfactory PerceptionBiomechanical PhenomenaQuestionnairesBrain DiseasesBayes TheoremHealth Knowledge, Attitudes, PracticeAttitude to HealthAttitude of Health PersonnelWeight PerceptionAgingMotion Pictures as TopicPerceptual DistortionHead MovementsAfterimageOptic Flow
Motion Perception
The real or apparent movement of objects through the visual field.
Motion
Physical motion, i.e., a change in position of a body or subject as a result of an external force. It is distinguished from MOVEMENT, a process resulting from biological activity.
Photic Stimulation
Investigative technique commonly used during ELECTROENCEPHALOGRAPHY in which a series of bright light flashes or visual patterns are used to elicit brain activity.
Psychophysics
The science dealing with the correlation of the physical characteristics of a stimulus, e.g., frequency or intensity, with the response to the stimulus, in order to assess the psychologic factors involved in the relationship.
Perceptual Disorders
Cognitive disorders characterized by an impaired ability to perceive the nature of objects or concepts through use of the sense organs. These include spatial neglect syndromes, where an individual does not attend to visual, auditory, or sensory stimuli presented from one side of the body.
Perception
The process by which the nature and meaning of sensory stimuli are recognized and interpreted.
Sensory Thresholds
The minimum amount of stimulus energy necessary to elicit a sensory response.
Discrimination (Psychology)
Differential response to different stimuli.
Contrast Sensitivity
The ability to detect sharp boundaries (stimuli) and to detect slight changes in luminance at regions without distinct contours. Psychophysical measurements of this visual function are used to evaluate visual acuity and to detect eye disease.
Optical Illusions
An illusion of vision usually affecting spatial relations.
Form Perception
The sensory discrimination of a pattern shape or outline.
Depth Perception
Perception of three-dimensionality.
Pattern Recognition, Visual
Mental process to visually perceive a critical number of facts (the pattern), such as characters, shapes, displays, or designs.
Eye Movements
Voluntary or reflex-controlled movements of the eye.
Visual Perception
The selecting and organizing of visual stimuli based on the individual's past experience.
Visual Pathways
Set of cell bodies and nerve fibers conducting impulses from the eyes to the cerebral cortex. It includes the RETINA; OPTIC NERVE; optic tract; and geniculocalcarine tract.
Pursuit, Smooth
Eye movements that are slow, continuous, and conjugate and occur when a fixed object is moved slowly.
Figural Aftereffect
A perceptual phenomenon used by Gestalt psychologists to demonstrate that events in one part of the perceptual field may affect perception in another part.
Vision, Binocular
The blending of separate images seen by each eye into one composite image.
Illusions
The misinterpretation of a real external, sensory experience.
Visual Cortex
Area of the OCCIPITAL LOBE concerned with the processing of visual information relayed via VISUAL PATHWAYS.
Rotation
Motion of an object in which either one or more points on a line are fixed. It is also the motion of a particle about a fixed point. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
Color Perception
Mental processing of chromatic signals (COLOR VISION) from the eye by the VISUAL CORTEX where they are converted into symbolic representations. Color perception involves numerous neurons, and is influenced not only by the distribution of wavelengths from the viewed object, but also by its background color and brightness contrast at its boundary.
Nystagmus, Optokinetic
Normal nystagmus produced by looking at objects moving across the field of vision.
Space Perception
The awareness of the spatial properties of objects; includes physical space.
Cues
Signals for an action; that specific portion of a perceptual field or pattern of stimuli to which a subject has learned to respond.
Lighting
The illumination of an environment and the arrangement of lights to achieve an effect or optimal visibility. Its application is in domestic or in public settings and in medical and non-medical environments.
Vision, Monocular
Images seen by one eye.
Vision Disparity
The difference between two images on the retina when looking at a visual stimulus. This occurs since the two retinas do not have the same view of the stimulus because of the location of our eyes. Thus the left eye does not get exactly the same view as the right eye.
Differential Threshold
The smallest difference which can be discriminated between two stimuli or one which is barely above the threshold.
Range of Motion, Articular
The distance and direction to which a bone joint can be extended. Range of motion is a function of the condition of the joints, muscles, and connective tissues involved. Joint flexibility can be improved through appropriate MUSCLE STRETCHING EXERCISES.
Visual Fields
The total area or space visible in a person's peripheral vision with the eye looking straightforward.
Movement
The act, process, or result of passing from one place or position to another. It differs from LOCOMOTION in that locomotion is restricted to the passing of the whole body from one place to another, while movement encompasses both locomotion but also a change of the position of the whole body or any of its parts. Movement may be used with reference to humans, vertebrate and invertebrate animals, and microorganisms. Differentiate also from MOTOR ACTIVITY, movement associated with behavior.
Temporal Lobe
Lower lateral part of the cerebral hemisphere responsible for auditory, olfactory, and semantic processing. It is located inferior to the lateral fissure and anterior to the OCCIPITAL LOBE.
Fixation, Ocular
The positioning and accommodation of eyes that allows the image to be brought into place on the FOVEA CENTRALIS of each eye.
Orientation
Awareness of oneself in relation to time, place and person.
Attention
Focusing on certain aspects of current experience to the exclusion of others. It is the act of heeding or taking notice or concentrating.
Ocular Motility Disorders
Disorders that feature impairment of eye movements as a primary manifestation of disease. These conditions may be divided into infranuclear, nuclear, and supranuclear disorders. Diseases of the eye muscles or oculomotor cranial nerves (III, IV, and VI) are considered infranuclear. Nuclear disorders are caused by disease of the oculomotor, trochlear, or abducens nuclei in the BRAIN STEM. Supranuclear disorders are produced by dysfunction of higher order sensory and motor systems that control eye movements, including neural networks in the CEREBRAL CORTEX; BASAL GANGLIA; CEREBELLUM; and BRAIN STEM. Ocular torticollis refers to a head tilt that is caused by an ocular misalignment. Opsoclonus refers to rapid, conjugate oscillations of the eyes in multiple directions, which may occur as a parainfectious or paraneoplastic condition (e.g., OPSOCLONUS-MYOCLONUS SYNDROME). (Adams et al., Principles of Neurology, 6th ed, p240)
Motion Sickness
Disorder caused by motion, as sea sickness, train sickness, car sickness, air sickness, or SPACE MOTION SICKNESS. It may include nausea, vomiting and dizziness.
Models, Psychological
Theoretical representations that simulate psychological processes and/or social processes. These include the use of mathematical equations, computers, and other electronic equipment.
Occipital Lobe
Posterior portion of the CEREBRAL HEMISPHERES responsible for processing visual sensory information. It is located posterior to the parieto-occipital sulcus and extends to the preoccipital notch.
Magnetic Resonance Imaging
Non-invasive method of demonstrating internal anatomy based on the principle that atomic nuclei in a strong magnetic field absorb pulses of radiofrequency energy and emit them as radiowaves which can be reconstructed into computerized images. The concept includes proton spin tomographic techniques.
Models, Neurological
Theoretical representations that simulate the behavior or activity of the neurological system, processes or phenomena; includes the use of mathematical equations, computers, and other electronic equipment.
Psychosurgery
Treatment of chronic, severe and intractable psychiatric disorders by surgical removal or interruption of certain areas or pathways in the brain, especially in the prefrontal lobes.
Mesopic Vision
The function of the eye that is used in the intermediate level of illumination (mesopic intensities) where both the RETINAL ROD PHOTORECEPTORS and the RETINAL CONE PHOTORECEPTORS are active in processing light input simultaneously.
Vision, Ocular
The process in which light signals are transformed by the PHOTORECEPTOR CELLS into electrical signals which can then be transmitted to the brain.
Reaction Time
The time from the onset of a stimulus until a response is observed.
Social Perception
The perceiving of attributes, characteristics, and behaviors of one's associates or social groups.
Speech Perception
The process whereby an utterance is decoded into a representation in terms of linguistic units (sequences of phonetic segments which combine to form lexical and grammatical morphemes).
Adaptation, Ocular
The adjustment of the eye to variations in the intensity of light. Light adaptation is the adjustment of the eye when the light threshold is increased; DARK ADAPTATION when the light is greatly reduced. (From Cline et al., Dictionary of Visual Science, 4th ed)
Psychomotor Performance
The coordination of a sensory or ideational (cognitive) process and a motor activity.
Perceptual Masking
The interference of one perceptual stimulus with another causing a decrease or lessening in perceptual effectiveness.
Time Factors
Elements of limited time intervals, contributing to particular results or situations.
Artifacts
Any visible result of a procedure which is caused by the procedure itself and not by the entity being analyzed. Common examples include histological structures introduced by tissue processing, radiographic images of structures that are not naturally present in living tissue, and products of chemical reactions that occur during analysis.
Acceleration
An increase in the rate of speed.
Brain Mapping
Imaging techniques used to colocalize sites of brain functions or physiological activity with brain structures.
Saccades
An abrupt voluntary shift in ocular fixation from one point to another, as occurs in reading.
Auditory Perception
The process whereby auditory stimuli are selected, organized, and interpreted by the organism.
Visual Acuity
Clarity or sharpness of OCULAR VISION or the ability of the eye to see fine details. Visual acuity depends on the functions of RETINA, neuronal transmission, and the interpretative ability of the brain. Normal visual acuity is expressed as 20/20 indicating that one can see at 20 feet what should normally be seen at that distance. Visual acuity can also be influenced by brightness, color, and contrast.
Acoustic Stimulation
Use of sound to elicit a response in the nervous system.
Discrimination Learning
Learning that is manifested in the ability to respond differentially to various stimuli.
Macaca mulatta
A species of the genus MACACA inhabiting India, China, and other parts of Asia. The species is used extensively in biomedical research and adapts very well to living with humans.
Psychometrics
Assessment of psychological variables by the application of mathematical procedures.
Analysis of Variance
A statistical technique that isolates and assesses the contributions of categorical independent variables to variation in the mean of a continuous dependent variable.
Time Perception
The ability to estimate periods of time lapsed or duration of time.
Pain Perception
The process by which PAIN is recognized and interpreted by the brain.
Walking
An activity in which the body advances at a slow to moderate pace by moving the feet in a coordinated fashion. This includes recreational walking, walking for fitness, and competitive race-walking.
Image Processing, Computer-Assisted
A technique of inputting two-dimensional images into a computer and then enhancing or analyzing the imagery into a form that is more useful to the human observer.
Functional Laterality
Behavioral manifestations of cerebral dominance in which there is preferential use and superior functioning of either the left or the right side, as in the preferred use of the right hand or right foot.
Size Perception
The sensory interpretation of the dimensions of objects.
Pitch Perception
A dimension of auditory sensation varying with cycles per second of the sound stimulus.
Retina
The ten-layered nervous tissue membrane of the eye. It is continuous with the OPTIC NERVE and receives images of external objects and transmits visual impulses to the brain. Its outer surface is in contact with the CHOROID and the inner surface with the VITREOUS BODY. The outer-most layer is pigmented, whereas the inner nine layers are transparent.
Touch Perception
The process by which the nature and meaning of tactile stimuli are recognized and interpreted by the brain, such as realizing the characteristics or name of an object being touched.
Taste Perception
The process by which the nature and meaning of gustatory stimuli are recognized and interpreted by the brain. The four basic classes of taste perception are salty, sweet, bitter, and sour.
Neural Pathways
Neural tracts connecting one part of the nervous system with another.
Brain
The part of CENTRAL NERVOUS SYSTEM that is contained within the skull (CRANIUM). Arising from the NEURAL TUBE, the embryonic brain is comprised of three major parts including PROSENCEPHALON (the forebrain); MESENCEPHALON (the midbrain); and RHOMBENCEPHALON (the hindbrain). The developed brain consists of CEREBRUM; CEREBELLUM; and other structures in the BRAIN STEM.
Adaptation, Physiological
The non-genetic biological changes of an organism in response to challenges in its ENVIRONMENT.
Neurons
The basic cellular units of nervous tissue. Each neuron consists of a body, an axon, and dendrites. Their purpose is to receive, conduct, and transmit impulses in the NERVOUS SYSTEM.
Olfactory Perception
The process by which the nature and meaning of olfactory stimuli, such as odors, are recognized and interpreted by the brain.
Biomechanical Phenomena
The properties, processes, and behavior of biological systems under the action of mechanical forces.
Questionnaires
Predetermined sets of questions used to collect data - clinical data, social status, occupational group, etc. The term is often applied to a self-completed survey instrument.
Brain Diseases
Pathologic conditions affecting the BRAIN, which is composed of the intracranial components of the CENTRAL NERVOUS SYSTEM. This includes (but is not limited to) the CEREBRAL CORTEX; intracranial white matter; BASAL GANGLIA; THALAMUS; HYPOTHALAMUS; BRAIN STEM; and CEREBELLUM.
Bayes Theorem
A theorem in probability theory named for Thomas Bayes (1702-1761). In epidemiology, it is used to obtain the probability of disease in a group of people with some characteristic on the basis of the overall rate of that disease and of the likelihood of that characteristic in healthy and diseased individuals. The most familiar application is in clinical decision analysis where it is used for estimating the probability of a particular diagnosis given the appearance of some symptoms or test result.
Health Knowledge, Attitudes, Practice
Knowledge, attitudes, and associated behaviors which pertain to health-related topics such as PATHOLOGIC PROCESSES or diseases, their prevention, and treatment. This term refers to non-health workers and health workers (HEALTH PERSONNEL).
Attitude to Health
Public attitudes toward health, disease, and the medical care system.
Attitude of Health Personnel
Attitudes of personnel toward their patients, other professionals, toward the medical care system, etc.
Weight Perception
Recognition and discrimination of the heaviness of a lifted object.
Aging
The gradual irreversible changes in structure and function of an organism that occur as a result of the passage of time.
Motion Pictures as Topic
The art, technique, or business of producing motion pictures for entertainment, propaganda, or instruction.
Perceptual Distortion
Lack of correspondence between the way a stimulus is commonly perceived and the way an individual perceives it under given conditions.
Head Movements
Voluntary or involuntary motion of head that may be relative to or independent of body; includes animals and humans.
Afterimage
Continuation of visual impression after cessation of stimuli causing the original image.
Optic Flow
The continuous visual field seen by a subject through space and time.

Transient and permanent deficits in motion perception after lesions of cortical areas MT and MST in the macaque monkey. (1/3995)

We examined the nature and the selectivity of the motion deficits produced by lesions of extrastriate areas MT and MST. Lesions were made by injecting ibotenic acid into the representation of the left visual field in two macaque monkeys. The monkeys discriminated two stimuli that differed either in stimulus direction or orientation. Direction and orientation discrimination were assessed by measuring thresholds with gratings and random-dots placed in the intact or lesioned visual fields. At the start of behavioral testing, we found pronounced, motion-specific deficits in thresholds for all types of moving stimuli, including pronounced elevations in contrast thresholds and in signal-to-noise thresholds measured with moving gratings, as well as deficits in direction range thresholds and motion coherence measured with random-dot stimuli. In addition, the accuracy of direction discrimination was reduced at smaller spatial displacements (i.e. step sizes), suggesting an increase in spatial scale of the residual directional mechanism. Subsequent improvements in thresholds were seen with all motion stimuli, as behavioral training progressed, and these improvements occurred only with extensive behavioral testing in the lesioned visual field. These improvements were particularly pronounced for stimuli not masked by noise. On the other hand, deficits in the ability to extract motion from noisy stimuli and in the accuracy of direction discrimination persisted despite extensive behavioral training. These results demonstrate the importance of areas MT and MST for the perception of motion direction, particularly in the presence of noise. In addition, they provide evidence for the importance of behavioral training for functional recovery after cortical lesions. The data also strongly support the idea of functional specialization of areas MT and MST for motion processing.  (+info)

The neuronal basis of a sensory analyser, the acridid movement detector system. I. Effects of simple incremental and decremental stimuli in light and dark adapted animals. (2/3995)

1. The response of the movement detector (MD) system to proportionally constant incremental and decremental stimuli has been studied at various degrees of light and dark adaptation. Action potentials in the descending contralateral movement detector neurone were taken as the indicator of response. 2. Over a range of at least six log10 units of adapting luminance, the MD system behaves as an ON/OFF unit, giving responses to both incremental and decremental changes in the illumination of a 5 degrees target. 3. With increasing amplitudes of stimuli, both the ON and OFF responses saturate rapidly. Saturation is reached sooner at higher levels of light adaptation. At all levels of light adaptation, the OFF response is greater than the ON. The ratio for saturating stimuli is approximately constant at around 3:2. 4. At the brightest adapting luminances used (20 000 cd/m2) the ON response is reduced but not lost. At the lowest (0-004 cd/m2) the OFF response to a 5 degrees disc fails, but can be regained by increasing the test area to 10 degrees. 5. From what is known of the retina of locusts and other insects, it is thought that light and dark adaptation in the MD system can be adequately explained by events at the retinula cell.  (+info)

Visual motion analysis for pursuit eye movements in area MT of macaque monkeys. (3/3995)

We asked whether the dynamics of target motion are represented in visual area MT and how information about image velocity and acceleration might be extracted from the population responses in area MT for use in motor control. The time course of MT neuron responses was recorded in anesthetized macaque monkeys during target motions that covered the range of dynamics normally seen during smooth pursuit eye movements. When the target motion provided steps of target speed, MT neurons showed a continuum from purely tonic responses to those with large transient pulses of firing at the onset of motion. Cells with large transient responses for steps of target speed also had larger responses for smooth accelerations than for decelerations through the same range of target speeds. Condition-test experiments with pairs of 64 msec pulses of target speed revealed response attenuation at short interpulse intervals in cells with large transient responses. For sinusoidal modulation of target speed, MT neuron responses were strongly modulated for frequencies up to, but not higher than, 8 Hz. The phase of the responses was consistent with a 90 msec time delay between target velocity and firing rate. We created a model that reproduced the dynamic responses of MT cells using divisive gain control, used the model to visualize the population response in MT to individual stimuli, and devised weighted-averaging computations to reconstruct target speed and acceleration from the population response. Target speed could be reconstructed if each neuron's output was weighted according to its preferred speed. Target acceleration could be reconstructed if each neuron's output was weighted according to the product of preferred speed and a measure of the size of its transient response.  (+info)

Common 3 and 10 Hz oscillations modulate human eye and finger movements while they simultaneously track a visual target. (4/3995)

1. A 10 Hz range centrally originating oscillation has been found to modulate slow finger movements and anticipatory smooth eye movements. To determine if an interaction or linkage occurs between these two central oscillations during combined visuo-manual tracking, frequency and coherence analysis were performed on finger and eye movements while they simultaneously tracked a visual target moving in intermittently visible sinusoidal patterns. 2. Two different frequencies of common or linked oscillation were found. The first, at 2-3 Hz, was dependent on visual feedback of target and finger tracking positions. The second, at around 10 Hz, still occurred when both target and finger positions were largely obscured, indicating that this common oscillation was generated internally by the motor system independent of visual feedback. Both 3 and 10 Hz oscillation frequencies were also shared by the right and left fingers if subjects used these together to track a visual target. 3. The linking of the 10 Hz range oscillations between the eyes and finger was task specific; it never occurred when eye and finger movements were made simultaneously and independently, but only when they moved simultaneously and followed the target together. However, although specific for tracking by the eyes and fingers together, the linking behaviour did not appear to be a prerequisite for such tracking, since significant coherence in the 10 Hz range was only present in a proportion of trials where these combined movements were made. 4. The experiments show that common oscillations may modulate anatomically very distinct structures, indicating that single central oscillations may have a widespread distribution in the central nervous system. The task-specific manifestation of the common oscillation in the eye and finger suggests that such mechanisms may have a functional role in hand-eye co-ordination.  (+info)

Variability in spike trains during constant and dynamic stimulation. (5/3995)

In a recent study, it was concluded that natural time-varying stimuli are represented more reliably in the brain than constant stimuli are. The results presented here disagree with this conclusion, although they were obtained from the same identified neuron (H1) in the fly's visual system. For large parts of the neuron's activity range, the variability of the responses was very similar for constant and time-varying stimuli and was considerably smaller than that in many visual interneurons of vertebrates.  (+info)

Shift in speed selectivity of visual cortical neurons: a neural basis of perceived motion contrast. (6/3995)

The perceived speed of motion in one part of the visual field is influenced by the speed of motion in its surrounding fields. Little is known about the cellular mechanisms causing this phenomenon. Recordings from mammalian visual cortex revealed that speed preference of the cortical cells could be changed by displaying a contrast speed in the field surrounding the cell's classical receptive field. The neuron's selectivity shifted to prefer faster speed if the contextual surround motion was set at a relatively lower speed, and vice versa. These specific center-surround interactions may underlie the perceptual enhancement of speed contrast between adjacent fields.  (+info)

Neuronal basis of a sensory analyser, the acridid movement detector system. III. Control of response amplitude by tonic lateral inhibition. (7/3995)

1. The Lobular Giant Movement Detector neurone (LGMD) of Schistocerca responds with spikes when small areas of the visual field change in luminance. Previous work has shown that changes of +/- 1 log 10 unit are enough to produce maximal ON and OFF responses. 2. Using a 5 degree test area, it is shown that the number of spikes generated by such a stimulus depends on the luminance of the surrounding area. When the surround is dark, the response is maximal; when it is brightly lit, the response is minimal. Intermediate intensities produce intermediate values of response. A X 2 change in response is produced by about 3 log 10 units change in surround intensity. 3. A bright annulus, with diameters of 10-5 degrees and 25-8 degrees, inhibits both ON and OFF responses when concentric with the 5 degree test area, but not when it is 30 degrees eccentric to the test area. The inhibitory effect shows no decrease after 4 min. 4. These results are interpreted to indicate a tonic lateral inhibitory network, sited peripherally in the optic lobe prior to the divergence of the separate ON and OFF channels found in the projection from the medulla to the LGMD. It is probably identical with that described for the lamina by previous workers.  (+info)

A theory of geometric constraints on neural activity for natural three-dimensional movement. (8/3995)

Although the orientation of an arm in space or the static view of an object may be represented by a population of neurons in complex ways, how these variables change with movement often follows simple linear rules, reflecting the underlying geometric constraints in the physical world. A theoretical analysis is presented for how such constraints affect the average firing rates of sensory and motor neurons during natural movements with low degrees of freedom, such as a limb movement and rigid object motion. When applied to nonrigid reaching arm movements, the linear theory accounts for cosine directional tuning with linear speed modulation, predicts a curl-free spatial distribution of preferred directions, and also explains why the instantaneous motion of the hand can be recovered from the neural population activity. For three-dimensional motion of a rigid object, the theory predicts that, to a first approximation, the response of a sensory neuron should have a preferred translational direction and a preferred rotation axis in space, both with cosine tuning functions modulated multiplicatively by speed and angular speed, respectively. Some known tuning properties of motion-sensitive neurons follow as special cases. Acceleration tuning and nonlinear speed modulation are considered in an extension of the linear theory. This general approach provides a principled method to derive mechanism-insensitive neuronal properties by exploiting the inherently low dimensionality of natural movements.  (+info)

Patent US5647049 - Video recording/reproducing apparatus which uses a differential motion ... - Google PatentsPatent US5647049 - Video recording/reproducing apparatus which uses a differential motion ... - Google Patents
A video recording/reproducing apparatus having an encoder for encoding a video signal, and a recording unit for recording encoded information from the encoder on a digital recording medium, the encoder comprising a memory for storing at least first and second reference pictures, a prediction circuit for forming a prediction signal for an input signal, using a first reference signal from the first reference picture designated by a first motion vector, and a second reference signal from the second reference picture designated by a second motion vector, a first motion vector detector for determining a third motion vector from a point of intersection of the first motion vector and the second motion vector to a point in the second reference picture where the first motion vector intersects the second reference picture, a second motion vector detector for determining a differential motion vector by subtracting the third motion vector from the second motion vector, and an encoding circuit for encoding the first
http://www.google.com/patents/US5647049?dq=6,563,928
Speed perception across variations in spatiotemporal frequencies in apparent motion stimuli | JOV | ARVO JournalsSpeed perception across variations in spatiotemporal frequencies in apparent motion stimuli | JOV | ARVO Journals
Many pairs of spatial and temporal frequencies in a motion display that result in the same stimulus speed for a moving object can produce different speed percepts (Priebe NJ et al., J Neurosci. 2003, 23(13): 5650-61). We previously reported that judgments of the speed of an object depend on the spatiotemporal frequency of the moving pattern in an inverted-U function, peaking at a specific spatial and temporal frequency combination [http://www.journalofvision.org/4/8/84/]. The location of this peak is largely independent of the size and shape of the object. In the present series of experiments, with the use of high coherence dot motion stimuli, we investigated the dependence of perceived speed on both spatial and temporal frequencies. The perceived speed of the stimulus was estimated using a 2AFC paradigm with interleaved QUEST staircases; subjects were asked to pick the faster of the two spatially separated [6 deg eccentricity] patches of dots moving in opposite directions. We systematically ...
http://jov.arvojournals.org/article.aspx?articleid=2134330
Auditory motion affects visual motion perception in a speeded discrimination task. - Oxford Neuroscience
Transient auditory stimuli have been shown to influence the perception of ambiguous 2D visual motion displays (the bouncing-disks effect; e.g. Sekuler et al. in Nature 385:308, 1997). The question addressed here was whether continuous moving auditory stimuli can also influence visual motion perception under the same experimental conditions. In Experiment 1, we used a modification of Sanabria et al.s (Exp Brain Res 157:537-541, 2004) paradigm (involving an indirect behavioural measure of the bouncing-disks effect), in which the 2D visual display was presented together with either a brief tone, a continuous moving sound, or in the absence of any form of auditory stimulation. Crucially, the results showed that, together with the effect of the brief tone on bouncing trials, the presence of the continuous moving sound speeded-up participants responses on streaming trials as compared to the brief tone or no sound conditions. The results of a second experiment revealed that the effect of the continuous
https://www.neuroscience.ox.ac.uk/publications/12509
Direct evidence that speedlines aid perception of motion direction | JOV | ARVO JournalsDirect evidence that speedlines aid perception of motion direction | JOV | ARVO Journals
Geisler (Nature, 1999) proposed that streaks left in the wake of a moving object may be detected by orientationally selective mechanisms (with appropriate temporal integration) and used to help disambiguate motion direction. We have measured thresholds for discriminating the direction of motion of a field of moving dots superimposed on orientationally-filtered noise, oriented either parallel or orthogonal to the dot motion. Orthogonal noise had little effect on direction discrimination thresholds, while parallel noise raised them by a factor of about 8. The detrimental effect decreased with increasing orientation-bandwidth for the parallel noise, and increased with bandwidth for the orthogonal noise. Parallel noise specifically impeded motion direction discrimination, having virtually no effect on either contrast thresholds or speed discrimination. We also measured direction discrimination thresholds for random fields of dot pairs, that were oriented either coherently to form Glass patterns, or ...
http://jov.arvojournals.org/article.aspx?articleid=2120342
High-Level Motion Processing | The MIT PressHigh-Level Motion Processing | The MIT Press
Motion perception is fundamental to survival. Until recently, research on motion perception emphasized such basic aspects of motion as sampling and filtering. In the past decade, however, the emphasis has gradually shifted to higher-level motion processing-i.e., processing that takes place not only in the primary visual cortex but also in the higher or more complicated parts of the brain. The contributors to this book focus on such key aspects of motion processing as interaction and integration between locally measured motion units, structure from motion, heading in an optical flow, and second-order motion. They also discuss the interaction of motion processing with other high-level visual functions such as surface representation and attention.The book is divided into three sections: (1) interactive aspects of motion, (2) motion coherence and grouping, and (3) heading and structure from motion. Each section begins with computational aspects, proceeds to the neuropsychological/neurophysiological, and
https://mitpress.mit.edu/books/high-level-motion-processing
Genes contribute to biological motion perception and its covariation with autistic traits | EurekAlert! Science NewsGenes contribute to biological motion perception and its covariation with autistic traits | EurekAlert! Science News
Dr. JIANG Yi, Dr. WANG Ying and their colleagues from the State Key Laboratory of Brain and Cognitive Science, Institute of Psychology of the Chinese Academy of Sciences have conducted a behavioral genetic study to find out the sources underlying the individual differences in biological motion perception.
https://www.eurekalert.org/pub_releases/2018-01/caos-gct011818.php
Local versus global and retinotopic versus non-retinotopic motion processing in schizophrenia patientsLocal versus global and retinotopic versus non-retinotopic motion processing in schizophrenia patients
Schizophrenia impairs cognitive functions as much as perception. For example, patients perceive global motion in random dot kinematograms less strongly, because, as it is argued, the integration of the dots into a single Gestalt is complex and therefore deteriorated. Similarly, the perception of apparent motion is impaired, because filling-in of the illusory trajectory requires complex processing. Here, we investigated very complex motion processing using the Ternus-Pikler display. First, we tested whether the perception of global apparent motion is impaired in schizophrenia patients compared to healthy controls. The task requires both the grouping of multiple elements into a coherent Gestalt and the filling-in of its illusory motion trajectory. Second, we tested the perception of rotation in the same stimulus, which in addition requires the computation of non-retinotopic motion. Contrary to earlier studies, patients were not impaired in either task and even tended to perform better than ...
https://infoscience.epfl.ch/record/225940
Inferring monkey ocular following responses from V1 population dynamics using a probabilistic model of motion integration |...Inferring monkey ocular following responses from V1 population dynamics using a probabilistic model of motion integration |...
Short presentation of a large moving pattern elicits an ocular following response that exhibits many of the properties attributed to low-level motion processing such as spatial and temporal integration, contrast gain control and divisive interaction between competing motions. Similar mechanisms have been demonstrated in V1 cortical activity in response to center-surround gratings patterns measured with real-time optical imaging in awake monkeys (see poster of Reynaud et al., VSS09). Based on a previously developed Bayesian framework, we have developed an optimal statistical decoder of such an observed cortical population activity as recorded by optical imaging. This model aims at characterizing the statistical dependence between early neuronal activity and ocular responses and its performance was analyzed by comparing this neuronal read-out and the actual motor responses on a trial-by-trial basis. First, we show that relative performance of the behavioral contrast response function is similar to the
https://laurentperrinet.github.io/publication/perrinet-09-vss/
Motion vector calculating method - KONDO SATOSHIMotion vector calculating method - KONDO SATOSHI
When a block (MB|highlight||bold|22|/bold||/highlight|) of which motion vector is referred to in the direct mode contains a plurality of motion vectors, 2 motion vectors MV|highlight||bold|23 |/bold||
https://www.freepatentsonline.com/y2004/0136461.html
Multiple Spectral Inputs Improve Motion Discrimination in the Drosophila Visual System | ScienceMultiple Spectral Inputs Improve Motion Discrimination in the Drosophila Visual System | Science
Color and motion information are thought to be channeled through separate neural pathways, but it remains unclear whether and how these pathways interact to improve motion perception. In insects, such as Drosophila, it has long been believed that motion information is fed exclusively by one spectral class of photoreceptor, so-called R1 to R6 cells; whereas R7 and R8 photoreceptors, which exist in multiple spectral classes, subserve color vision. Here, we report that R7 and R8 also contribute to the motion pathway. By using electrophysiological, optical, and behavioral assays, we found that R7/R8 information converge with and shape the motion pathway output, explaining flies broadly tuned optomotor behavior by its composite responses. Our results demonstrate that inputs from photoreceptors of different spectral sensitivities improve motion discrimination, increasing robustness of perception. ...
https://science.sciencemag.org/content/336/6083/925.abstract
Early visual experience and the receptive-field organization of optic flow processing interneurons in the fly motion pathway
The distribution of local preferred directions and motion sensitivities within the receptive fields of so-called tangential neurons in the fly visual system was previously found to match optic flow fields as induced by certain self-motions. The complex receptive-field organization of the tangential neurons and the recent evidence showing that the orderly development of the flys peripheral visual system depends on visual experience led us to investigate whether or not early visual input is required to establish the functional receptive field properties of such tangential neurons. In electrophysiological investigations of two identified tangential neurons, it turned out that dark-hatched flies which were kept in complete darkness for 2 days develop basically the same receptive-field organization as flies which were raised under seasonal light/dark conditions and were free to move in their cages. We did not find any evidence that the development of the sophisticated receptive-field organization of ...
https://pub.uni-bielefeld.de/publication/1773376
Lighting-from-above prior in biological motion perception | cogimon.eu
The visual system is able to recognize body motion from impoverished stimuli. This requires combining stimulus information with visual priors. We present a new visual illusion showing that one of these priors is the assumption that bodies are typically illuminated from above. A change of illumination direction from above to below flips the perceived locomotion direction of a biological motion stimulus. Control experiments show that the underlying mechanism is different from shape-from-shading and directly combines information about body motion with a lighting-from-above prior. We further show that the illusion is critically dependent on the intrinsic luminance gradients of the most mobile parts of the moving body. We present a neural model with physiologically plausible mechanisms that accounts for the illusion and shows how the illumination prior might be encoded within the visual pathway. Our experiments demonstrate, for the first time, a direct influence of illumination priors in high-level ...
https://cogimon.rob.cs.tu-bs.de/lighting-above-prior-biological-motion-perception?page=2
Frontiers | Physiological signal variability in hMT+ reflects performance on a direction discrimination task | PsychologyFrontiers | Physiological signal variability in hMT+ reflects performance on a direction discrimination task | Psychology
Our ability to perceive visual motion is critically dependent on the human motion complex (hMT+) in the dorsal visual stream. Extensive electrophysiological research in the monkey equivalent of this region has demonstrated how neuronal populations code for properties such as speed and direction, and that neurometric functions relate to psychometric functions within the individual monkey. In humans, the physiological correlates of inter-individual perceptual differences are still largely unknown. To address this question, we used functional magnetic resonance imaging (fMRI) while participants viewed translational motion in different directions, and we measured thresholds for direction discrimination of moving stimuli in a separate psychophysics experiment. After determining hMT+ in each participant with a functional localizer, we were able to decode the different directions of visual motion from it using pattern classification (PC). We also characterized the variability of fMRI signal in hMT+ during
https://www.frontiersin.org/articles/10.3389/fpsyg.2011.00185/full
Motion - predators motion information • Sex and emotional state • 3d shape from 2d motion o Events thats elicit motion...Motion - predators motion information • Sex and emotional state • 3d shape from 2d motion o Events thats elicit motion...
View Notes - Motion from PSYC 225 at UNC. predators motion information • Sex and emotional state • 3d shape from 2d motion o Events thats elicit motion perception Real motion Illusory motion
https://www.coursehero.com/file/6579640/Motion/
NTNU Open: Development of visual motion perception for prospective control: Brain and behavioral studies in infantsNTNU Open: Development of visual motion perception for prospective control: Brain and behavioral studies in infants
During infancy, smart perceptual mechanisms develop allowing infants to judge time-space motion dynamics more efficiently with age and locomotor experience. This emerging capacity may be vital to enable preparedness for upcoming events and to be able to navigate in a changing environment. Little is known about brain changes that support the development of prospective control and about processes, such as preterm birth, that may compromise it. As a function of perception of visual motion, this paper will describe behavioral and brain studies with young infants investigating the development of visual perception for prospective control. By means of the three visual motion paradigms of occlusion, looming, and optic flow, our research shows the importance of including behavioral data when studying the neural correlates of prospective control ...
https://ntnuopen.ntnu.no/ntnu-xmlui/handle/11250/2389837?show=full
Motion Perception | Profiles RNS
This graph shows the total number of publications written about Motion Perception by people in this website by year, and whether Motion Perception was a major or minor topic of these publications ...
https://profiles.rush.edu/display/28457
Transfer of visual motion information via graded synapses operates linearly in the natural activity range
Synaptic transmission between a graded potential neuron and a spiking neuron was investigated in vivo using sensory stimulation instead of artificial excitation of the presynaptic neuron. During visual motion stimulation, individual presynaptic and postsynaptic neurons in the brain of the fly were electrophysiologically recorded together with concentration changes of presynaptic calcium (Delta[Ca(2+)](pre)). Preferred-direction motion leads to depolarization of the presynaptic neuron. It also produces pronounced increases in [Ca(2+)](pre) and the postsynaptic spike rate. Motion in the opposite direction was associated with hyperpolarization of the presynaptic cell but only a weak reduction in [Ca(2+)](pre) and the postsynaptic spike rate. Apart from this rectification, the relationships between presynaptic depolarizations, Delta[Ca(2+)](pre), and postsynaptic spike rates are, on average, linear over the entire range of activity levels that can be elicited by sensory stimulation. Thus, the ...
https://pub.uni-bielefeld.de/record/1773499
Biologically Inspired Dynamic Textures for Probing Motion PerceptionBiologically Inspired Dynamic Textures for Probing Motion Perception
Perception is often described as a predictive process based on an optimal inference with respect to a generative model. We study here the principled construction of a generative model specifically crafted to probe motion perception. In that context, we first provide an axiomatic, biologically-driven derivation of the model. This model synthesizes random dynamic textures which are defined by stationary Gaussian distributions obtained by the random aggregation of warped patterns. Importantly, we show that this model can equivalently be described as a stochastic partial differential equation. Using this characterization of motion in images, it allows us to recast motion-energy models into a principled Bayesian inference framework. Finally, we apply these textures in order to psychophysically probe speed perception in humans. In this framework, while the likelihood is derived from the generative model, the prior is estimated from the observed results and accounts for the perceptual bias in a ...
https://papers.nips.cc/paper/2015/hash/6eb6e75fddec0218351dc5c0c8464104-Abstract.html
Single Step Optimal Block Matched Motion Estimation with Motion Vectors Having Arbitrary Pixel Precisions | American Journal of...Single Step Optimal Block Matched Motion Estimation with Motion Vectors Having Arbitrary Pixel Precisions | American Journal of...
Problem statement: This study derives the optimal motion vector with arbitrary pixel precisions in a single step. Approach: A non-linear block matched motion model was proposed. Based on the proposed non-linear block matched motion model, the optimal motion vector which minimizes the mean square error was solved analytically in a single step via a gradient approach. Results: The mean square error based on the proposed method was guaranteed to be lower than or equal to that based on conventional methods. The computational efforts for the proposed method were lower than that of conventional methods particularly when the required pixel precision is higher than or equal to the quarter pixel precisions. Conclusion: As integer pixel locations, half pixel locations and quarter pixel locations are particular locations represented by the proposed model, the mean square error based on the proposed method is guaranteed to be lower than or equal to that based on these conventional methods. Also, as the ...
https://thescipub.com/abstract/ajeassp.2011.448.460
Fine Temporal Properties of Center-Surround Interactions in Motion Revealed by Reverse Correlation | Journal of NeuroscienceFine Temporal Properties of Center-Surround Interactions in Motion Revealed by Reverse Correlation | Journal of Neuroscience
These experiments reveal interactions between center and surround motions and their dependency on relative direction, contrast, and timing. Same-direction surround motion reduced the discriminability of high-contrast center motion and improved the discriminability of low-contrast center motion, regardless of surround contrast. The timing of the observed center-surround interactions depended on surround contrast; as the contrast of the surround decreased, surround motion needed to occur earlier relative to the center motion to have an effect on the observers performance.. These results were revealed using the temporal reverse correlation method, which allowed us to estimate the time course of center-surround interactions with relatively high precision, especially for very brief high-contrast center motion. It is worth reiterating that these results were obtained from surround motions that were perceived simply as a very fast up-down jitter. When queried, observers admitted that it was impossible ...
https://www.jneurosci.org/content/26/10/2614.full
Direct observation of ON and OFF pathways in the Drosophila visual system. | Janelia Research CampusDirect observation of ON and OFF pathways in the Drosophila visual system. | Janelia Research Campus
Visual motion perception is critical to many animal behaviors, and flies have emerged as a powerful model system for exploring this fundamental neural computation. Although numerous studies have suggested that fly motion vision is governed by a simple neural circuit [1-3], the implementation of this circuit has remained mysterious for decades. Connectomics and neurogenetics have produced a surge in recent progress, and several studies have shown selectivity for light increments (ON) or decrements (OFF) in key elements associated with this circuit [4-7]. However, related studies have reached disparate conclusions about where this selectivity emerges and whether it plays a major role in motion vision [8-13]. To address these questions, we examined activity in the neuropil thought to be responsible for visual motion detection, the medulla, of Drosophila melanogaster in response to a range of visual stimuli using two-photon calcium imaging. We confirmed that the input neurons of the medulla, the ...
https://www.janelia.org/node/45175
Localized direction selective responses in the dendrites of visual interneurons of the fly | BMC Biology | Full TextLocalized direction selective responses in the dendrites of visual interneurons of the fly | BMC Biology | Full Text
Fast flying insects such as flies need to integrate motion signals from their compound eyes for various tasks which include course control [1], collision avoidance and the detection of small objects. These tasks require that signals from individual ommatidia be combined into local motion signals, a process which is thought to take place in the medulla [2]. Local motion signals are then pooled and integrated on the dendrite of cells, which receive input from thousands of ommatidia. In the blowfly, this integration of retinotopic information occurs in the lobula plate, with a class of about 60 individually identifiable neurons showing direction selective responses to visual stimuli, the lobula-plate tangential cells (LPTCs). Among the best characterized of these cells are the neurons of the so called horizontal system (HS), named after their strong response to progressive (front-to-back) motion, and those of the vertical system (VS), which respond mainly to downward motion. However, similar to ...
https://bmcbiol.biomedcentral.com/articles/10.1186/1741-7007-8-36
motion detector security camera - best motion detector security camera
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Causal inference accounts for heading perception in the presence of object motion<...
TY - JOUR. T1 - Causal inference accounts for heading perception in the presence of object motion. AU - Dokka, Kalpana. AU - Park, Hyeshin. AU - Jansen, Michael. AU - DeAngelis, Gregory C.. AU - Angelaki, Dora E.. N1 - Funding Information: ACKNOWLEDGMENTS. This work was supported by National Institutes of Health Grants R03 DC013987 (to K.D.), NEI EY016178 (to G.C.D.), R01 EY022538 (to D.E.A.), and Simons Foundation for Autism Research Award 396921 (to D.E.A.).. PY - 2019/4/30. Y1 - 2019/4/30. N2 - The brain infers our spatial orientation and properties of the world from ambiguous and noisy sensory cues. Judging self-motion (heading) in the presence of independently moving objects poses a challenging inference problem because the image motion of an object could be attributed to movement of the object, self-motion, or some combination of the two. We test whether perception of heading and object motion follows predictions of a normative causal inference framework. In a dual-report task, subjects ...
https://nyuscholars.nyu.edu/en/publications/causal-inference-accounts-for-heading-perception-in-the-presence-
OSA | Biologically inspired local motion detector architectureOSA | Biologically inspired local motion detector architecture
A new directionally sensitive motion detection system is proposed that is capable of detecting local motion without any significant preprocessing. It has a delay-and-compare structure like that of the Reichardt detector but uses as its basic building block the shunting inhibition neural model. It is therefore called the local inhibitory motion detector. Furthermore, an array of such detectors exhibits adaptive responses akin to those observed in motion-sensitive biological neurons.. © 1999 Optical Society of America. Full Article , PDF Article ...
https://www.osapublishing.org/josaa/abstract.cfm?uri=josaa-16-9-2059
motion perception and neurotransmitters | Philosophical Transactions of the Royal Society B: Biological Sciencesmotion perception and neurotransmitters | Philosophical Transactions of the Royal Society B: Biological Sciences
Recent studies have shown that interindividual variability can be a rich source of information regarding the mechanism of human visual perception. In this study, we examined the mechanisms underlying interindividual variability in the perception of visual motion, one of the fundamental components of visual scene analysis, by measuring neurotransmitter concentrations using magnetic resonance spectroscopy. First, by psychophysically examining two types of motion phenomena-motion assimilation and contrast-we found that, following the presentation of the same stimulus, some participants perceived motion assimilation, while others perceived motion contrast. Furthermore, we found that the concentration of the excitatory neurotransmitter glutamate-glutamine (Glx) in the dorsolateral prefrontal cortex (Brodmann area 46) was positively correlated with the participants tendency to motion assimilation over motion contrast; however, this effect was not observed in the visual areas. The concentration of the ...
http://rstb.royalsocietypublishing.org/content/372/1714/20160111
EP0720385A2 - Video encoder with motion area extraction - Google Patents
A specified area and a motion area are extracted from an input image and encoded by allocating a relatively increased amount of codes to the specified area and a relatively reduced amount of codes to the motion area to improve the quality of the specified area of the image. The image sequence encoding device according to the present invention is provided with a specified area extracting portion (33) connected to a frame memory (21) to extract a specified area from an input image; a motion area extracting portion (34) connected to a motion detecting portion (31) to extract a motion area according to a magnitude of motion vectors and a specified area of a preceding frame; an encoding control portion (35) connected to a buffer memory (26), a specified area extracting portion (33) and the motion extracting portion (34) to control quantizing and encoding process.
https://patents.google.com/patent/EP0720385A2/en
OPAL - OHIO PRIVATE ACADEMIC LIBRARIES / Muskingum
Motion perception is fundamental to survival. Until recently, research on motion perception emphasized such basic aspects of motion as sampling and filtering. In the past decade, however, the emphasis has gradually shifted to higher-level motion processing--i.e., processing that takes place not only in the primary visual cortex but also in the higher or more complicated parts of the brain. The contributors to this book focus on such key aspects of motion processing as interaction and integration between locally measured motion units, structure from motion, heading in an optical flow, and second-order motion. They also discuss the interaction of motion processing with other high-level visual functions such as surface representation and attention. The book is divided into three sections: (1) interactive aspects of motion, (2) motion coherence and grouping, and (3) heading and structure from motion. Each section begins with computational aspects, proceeds to the ...
https://cat.opal-libraries.org/search~S16?/jMother-Child+Relations./jmother+child+relations/-3%2C-1%2C0%2CB/frameset&FF=jmotion+perception+physiology&1%2C%2C3
11.27.2002 - UC Berkeley scientists detail neural circuit that lets eye detect directional motion11.27.2002 - UC Berkeley scientists detail neural circuit that lets eye detect directional motion
This circuit, which enables us to track moving objects, serves as an example of other brain circuits, some of which perform thousands of computations every second. The findings could aid the design of bionic eyes that track motion and process visual information like our own eyes. This work reveals a very sophisticated neural computation, the first non-linear computation performed by the nervous system for which a circuit is close to being solved, said Frank Werblin, professor of molecular and cell biology at UC Berkeley. It is a preliminary step in understanding how more sophisticated computations are performed by the brain. Werblin notes, for example, that we use motion detection every time we cross the street, anticipating when traffic will reach our intersection and deciding when to cross. Barry Bonds probably has superior motion-detecting neurons, he added, referring to the home-run hitter with the San Francisco Giants. He takes a simple movement detector and, in the context of a ...
http://www.berkeley.edu/news/media/releases/2002/11/27_motion.html
Diffusion imaging of the in vivo heart using spin echoes-considerations on bulk motion sensitivity - Zurich Open Repository...Diffusion imaging of the in vivo heart using spin echoes-considerations on bulk motion sensitivity - Zurich Open Repository...
Cardiac diffusion MRI based on stimulated-echo acquisition mode (STEAM) techniques is hampered by its inherent low signal-to-noise ratio (SNR) efficiency. Diffusion imaging using standard spin-echo (SE) techniques, on the other hand, offers higher SNRs but has been considered impractical for the beating heart due to excessive signal attenuation from cardiac bulk motion. In this work the effect of systolic cardiac motion on different diffusion-encoding schemes was studied in detail. Numerical simulations based on in vivo motion data (acquired by MRI tagging techniques) demonstrate an up to 10-fold decrease in bulk motion sensitivity of the diffusion encoding if the first-order moment of the diffusion-encoding gradients is nullified. It is shown that the remaining systolic phase pattern on the myocardium does not influence the magnitude images if the spatial resolution is chosen to be higher than 4 mm. Given these relatively low resolution requirements, we obtained in vivo diffusion-weighted (DW) ...
http://www.zora.uzh.ch/id/eprint/95566/
Neural Mechanisms of Visual Motion Perception in Primates - CaltechAUTHORSNeural Mechanisms of Visual Motion Perception in Primates - CaltechAUTHORS
A large extent of the posterior cortex of the primate brain is devoted to vision, and it contains two general streams that process visual information. The one stream is situated more ventrally in the cortex and is important for object recognition, pattern recognition, color perception, and shape perception. These attributes of visual analysis we associate with visual awareness or seeing, and thus this stream has been referred to as the what system because it recognizes objects (Ungerleider and Mishkin 1982). A second, more dorsal stream is associated with visual-motor transformations-that is, the routing of sensory information into motor areas for the purpose of action. This dorsal stream plays an important role in attention, decisions, and movement planning. It also plays an important role in spatial awareness, which is crucial for planning movements to locations in space and for transforming visually defined locations into movement coordinates to accomplish accurate motor behaviors. This ...
https://authors.library.caltech.edu/102313/
Vision Tape - a flexible compound vision sensor for motion detection and proximity estimation - NCCR RoboticsVision Tape - a flexible compound vision sensor for motion detection and proximity estimation - NCCR Robotics
In this paper, we introduce Vision Tape (VT), a novel class of flexible compound-eye-like linear vision sensor dedicated to motion extraction and proximity estimation. This novel sensor possesses intrinsic mechanical flexibility that provides wide-range adaptive shape, allowing adjustable field of view as well as integration with numerous substrates and curvatures. VT extracts Optic Flow (OF) of the visual scene to calculate the motion vector, which allows proximity estimation based on the motion parallax principle. In order to validate the functionality of VT, we have designed and fabricated an exemplary prototype consisting of an array of eight photodiodes attached to a flexible PCB that acts as mechanical and electrical support. This prototype performs image acquisition and processing with an integrated microcontroller at a frequency of 1000 fps, even during bending of the sensor. With this, the effect of VT shape on motion perception and proximity estimation is studied and, in particular, ...
https://www.nccr-robotics.ch/publication/vision-tape-a-flexible-compound-vision-sensor-for-motion-detection-and-proximity-estimation/
Patent US5844616 - Method and apparatus for motion compensated interpolation - Google PatentsPatent US5844616 - Method and apparatus for motion compensated interpolation - Google Patents
For motion compensated interpolation (MCI) with sub-pixel accuracy, the missing pixels need to be interpolated prior to the motion compensation. The required pixel values are stored using line and pixel delays. A switch matrix selects, in response to a motion vector, such stored pixels which are currently needed for the processing. In order to avoid sub-pixel MCI, the interpolation is carried out prior to the motion compensation. In order to avoid an increased input data rate of the motion compensation circuitry, only a standard switch matrix is used. A special arrangement of delays storing pixel values needed for the processing is used to extend the standard delay array. Because an increased number of pixels is involved, an improved sub-pixel MCI can be achieved. This is because such a delay extension does not significantly affect the decoded picture quality even if adjacent motion vectors do not exactly match the current motion vector.
http://www.google.com/patents/US5844616?dq=5,960,411
The Behavioral and Neural Effects of Language on Motion Perception | Journal of Cognitive Neuroscience | MIT PressThe Behavioral and Neural Effects of Language on Motion Perception | Journal of Cognitive Neuroscience | MIT Press
Direction of motion was counterbalanced across participants, that is, half of the participants were presented with upward and the other half with downward motion stimuli. A central fixation cross (width = 0.3 degrees) was presented throughout the trial, except when a word was presented. Each trial started with a centrally presented word (duration = 100 msec), which could either be a motion word or a neutral word, and which was followed by a 200-msec ISI (see Figure 1). Presentation of the words was fully randomized within each block of the experiment. We instructed participants to ignore the word and maintain fixation. Next, a visual RDM stimulus was presented (duration = 200 msec) in either the LVF or in the RVF. Participants had to indicate, as quickly and accurately as possible, whether the RDM contained coherent motion, while fixating at the central fixation cross. The brief presentation time of the RDM stimulus (200 msec) served to minimize the chance of eye movements to the stimulus, as ...
https://direct.mit.edu/jocn/article/27/1/175/28237/The-Behavioral-and-Neural-Effects-of-Language-on
Motion Detectors - Motion SensorsMotion Detectors - Motion Sensors
Motion detectors may be able to protect you from intruders and burglaries. Find out the different motion detectors available in the market. And the one that fits your security needs here.
https://www.excite.com/content/home-security/sensor-detector/motion-detector
Motion perception and personality, IMotion perception and personality, I
Experiments in the field of motion perception had indicated that there were good reasons for assuming a correlation between an analytical or isolating attitude in perception and a tendency to social isolation. The hypothesis advanced was: Those Ss who obtain extremely high scores in the velocity synthesis test, will be characterized, in the description of their personality, by traits like autism, or a low degree of social contact.. This hypothesis has been tested and the result may be taken as confirming the validity of the hypothesis.. ...
http://uu.diva-portal.org/smash/record.jsf?pid=diva2:513621
Frontiers | Event-Based Eccentric Motion Detection Exploiting Time Difference Encoding | NeuroscienceFrontiers | Event-Based Eccentric Motion Detection Exploiting Time Difference Encoding | Neuroscience
Attentional selectivity tends to follow events considered as interesting stimuli. Indeed, the motion of visual stimuli present in the environment attract our attention and allow us to react and interact with our surroundings. Extracting relevant motion information from the environment presents a challenge with regards to the high information content of the visual input. In this work we propose a novel integration between an eccentric down-sampling of the visual field, taking inspiration from the varying size of receptive fields (RFs) in the mammalian retina, and the Spiking Elementary Motion Detector (sEMD) model. We characterize the system functionality with simulated data and real world data collected with bio-inspired event driven cameras, successfully implementing motion detection along the four cardinal directions and diagonally.
https://www.frontiersin.org/articles/10.3389/fnins.2020.00451/full
Motion perception and aging at scotopic light levels.<...Motion perception and aging at scotopic light levels.<...
TY - JOUR. T1 - Motion perception and aging at scotopic light levels.. AU - Vidinova, Margarita. AU - Reinhardt-Rutland, Anthony. AU - Pierscionek, Barbara. AU - Lauritzen, Jan. PY - 2011. Y1 - 2011. M3 - Article. VL - 40. SP - 92. EP - 92. ER - ...
https://ulster-staging.pure.elsevier.com/en/publications/motion-perception-and-aging-at-scotopic-light-levels-6
Plus itPlus it
We recorded the responses of single neurons in extrastriate area MST while rhesus monkeys discriminated the direction of motion in a set of stochastic visual displays. By varying systematically the strength of a coherent motion signal within the visual display, we were able to measure simultaneously the monkeys psychophysical thresholds for direction discrimination and the responses of single neurons to the same motion signals. Neuronal thresholds for reliably signaling the direction of motion in the visual display were calculated from the measured responses using a method based in signal detection theory. Neurons in MST were exquisitely sensitive to motion signals in the display, having thresholds for discriminating the direction of coherent motion that were, on average, equal to the psychophysical thresholds of the monkeys. For many MST neurons, the intensity of the response was correlated with the monkeys psychophysical judgements for repeated presentations of a given near-threshold ...
http://www.jneurosci.org/content/14/7/4109
Motion PathsMotion Paths
Are motion paths available in Animator? On the product page the Bee is flying and its movement seem to made with the aid of motion paths.
https://www.sencha.com/forum/showthread.php?113788-Motion-Paths
Up, Down, Right, Left - How Visual Cues Help Us Understand Bodily Motion - Healthcanal.com : Healthcanal.comUp, Down, Right, Left - How Visual Cues Help Us Understand Bodily Motion - Healthcanal.com : Healthcanal.com
We spend so much time doing that-seeing who they are, what they are doing, what they intend to do, says psychology professor Nikolaus F. Troje of Queens University in Kingston, Ontario.. This process is called biological motion perception, and humans are so good at it that even a few dots on a screen representing the major joints of a body are enough to retrieve all the information we need-as long as they move.. But what role does motion play in that process? Does the visual system use it only to connect the dots to create a coherent, or global, structure? Troje and his colleagues-Masahiro Hirai and Daniel R. Saunders at Queens, and Dorita H. F. Chang, now at the University of Birmingham, UK-investigated this question in a new study, to be published in an upcoming issue of Psychological Science, a journal of the Association for Psychological Science.. They presented their participants with computer-generated stimuli showing 11 light points representing the shoulder, hip, elbows, wrists, ...
https://www.healthcanal.com/mental-health-behavior/18616-up-down-right-left-how-visual-cues-help-us-understand-bodily-motion.html
JHIBRG:Abstract Jan 25 2007 - OpenWetWareJHIBRG:Abstract Jan 25 2007 - OpenWetWare
We demonstrate Janus micro motor in fluid. The motor consists of magnesium (Mg) particles partially deposited gold (Au) on the outmost surface. The Janus particle exhibits a directional motion due to the exposed Mg region which generates hydrogen gas in chloride-rich solutions (e.g. seawater) in a long term manner. We manipulate such particles in a way that two or more particles are connected each other using DNA structures. Through motile observation of the aggregated particles, we identify the force and directional motion of multi-particle ensembles. ...
https://openwetware.org/wiki/JHIBRG:Abstract_Jan_25_2007
Motion Detection | CHDK Wiki | FandomMotion Detection | CHDK Wiki | Fandom
One of the nicest features of CHDK is its ability to add motion detection to a Canon "Point & Shoot" camera. This functionality is provided through special scripting commands which enable flexible implementation of many clever motion detection programs. Two particularly popular uses of motion...
https://chdk.fandom.com/wiki/Motion_Detection
2003.05481v3] Motion Planning for Quadrupedal Locomotion: Coupled Planning, Terrain Mapping and Whole-Body Control
Abstract: Planning whole-body motions while taking into account the terrain conditions is a challenging problem for legged robots since the terrain model might produce many local minima. Our coupled planning method uses stochastic and derivatives-free search to plan both foothold locations and horizontal motions due to the local minima produced by the terrain model. It jointly optimizes body motion, step duration and foothold selection, and it models the terrain as a cost-map. Due to the novel attitude planning method, the horizontal motion plans can be applied to various terrain conditions. The attitude planner ensures the robot stability by imposing limits to the angular acceleration. Our whole-body controller tracks compliantly trunk motions while avoiding slippage, as well as kinematic and torque limits. Despite the use of a simplified model, which is restricted to flat terrain, our approach shows remarkable capability to deal with a wide range of non-coplanar terrains. The results are ...
https://uk.arxiv.org/abs/2003.05481v3
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http://www.skynet.od.ua/maine-rural-rkyytb/2e90c6-indoor-motion-sensor-lights-mains
Mechanism for analogous illusory motion perception in flies and humans | PNASMechanism for analogous illusory motion perception in flies and humans | PNAS
Visual motion detection is one of the most important computations performed by visual circuits. Yet, we perceive vivid illusory motion in stationary, periodic luminance gradients that contain no true motion. This illusion is shared by diverse vertebrate species, but theories proposed to explain this illusion have remained difficult to test. Here, we demonstrate that in the fruit fly Drosophila, the illusory motion percept is generated by unbalanced contributions of direction-selective neurons responses to stationary edges. First, we found that flies, like humans, perceive sustained motion in the stationary gradients. The percept was abolished when the elementary motion detector neurons T4 and T5 were silenced. In vivo calcium imaging revealed that T4 and T5 neurons encode the location and polarity of stationary edges. Furthermore, our proposed mechanistic model allowed us to predictably manipulate both the magnitude and direction of the flys illusory percept by selectively silencing either T4 ...
https://www.pnas.org/content/117/37/23044.short?rss=1
Higher-order motion sensitivity in fly visual circuitsHigher-order motion sensitivity in fly visual circuits
Flies are highly visually guided animals. In this thesis, I have used hoverflies as a model for studying motion vision. Flies process motion vision in three visual ganglia: the lamina, the medulla, and the lobula complex. In the posterior part of lobula complex, there are around 60 lobula plate tangential cells (LPTCs). Most of LPTCs have large receptive fields where the local direction sensitivity suggests that they function as matched filters to specific types of optic flow. LPTCs connect to descending or neck motor neurons that control wing and head movements, respectively. Therefore, in this thesis I have focused on the electrophysiological responses of LPTCs to gain understanding of visual behaviors in flies.. The elementary motion detector (EMD) is a model that can explain the formation of local motion sensitivity. However, responses to higher order motion, where the direction of luminance change is uncorrelated with the direction of movement, cannot be predicted by classic EMDs. ...
http://uu.diva-portal.org/smash/record.jsf?pid=diva2:537696
Heritable aspects of biological motion perception and its covariation with autistic traits<...
TY - JOUR. T1 - Heritable aspects of biological motion perception and its covariation with autistic traits. AU - Wang, Ying. AU - Wang, Li. AU - Xu, Qian. AU - Liu, Dong. AU - Chen, Lihong. AU - Troje, Nikolaus F.. AU - He, Sheng. AU - Jiang, Yi. N1 - Funding Information: We thank the two reviewers for their constructive comments, Jie chen for assistance during Mx data analyses. This research was supported by grants from the National Natural Science Foundation of China (Grants 31525011, 31671137, and 31771211), the Strategic Priority Research Program (Grants XDB02010003 and XDB02050001), the Key Research Program of Frontier Sciences (Grant QYZDB-SSW-SMC030), the Youth Innovation Promotion Association of the Chinese Academy of Sciences, and the Natural Sciences and Engineering Research Council of Canada (to N.F.T.). Funding Information: ACKNOWLEDGMENTS. We thank the two reviewers for their constructive comments, Jie chen for assistance during Mx data analyses. This research was supported by ...
https://minnesota-staging.pure.elsevier.com/en/publications/heritable-aspects-of-biological-motion-perception-and-its-covaria
Neurophysiology Lab. NIBB: Biological motion stimuli are attractive to medaka fishNeurophysiology Lab. NIBB: Biological motion stimuli are attractive to medaka fish
In many social fish species, visual cues play an important role in inducing shoaling behavior. The present study is the first to examine whether and how biological motion depicting a moving creature by means of only a small number of isolated points induces shoaling behaviour in fish. Medaka (Oryzias latipes) were used because they are known to have high visual acuity and exhibit a strong tendency to form shoals. In experiment 1, we found that the presentation of medaka biological motion resulted in heightened shoaling behaviour when compared with that of non-biological motion (depicted by a small number of points placed at fixed distances that moved at a constant speed in a constant direction). In experiment 2, it was indicated that medaka biological motion was more effective at inducing shoaling behaviour when compared with human biological motion. In experiment 3, it was demonstrated that shoaling behaviour was largely dependent on the smoothness of the biological motion. In experiment 4, ...
https://ewatanabe.blogspot.com/2013/12/biological-motion-stimuli-are.html
Sea water background motion - Backgrounds & Textures - VJ Loops- Royalty Free Stock Footage, Media and VisualsSea water background motion - Backgrounds & Textures - VJ Loops- Royalty Free Stock Footage, Media and Visuals
The worlds largest VJ Loops shop for high quality royalty free motion backgrounds stock footage downloads in 4K, UHD, HD 1080p, & Ultra Wide. Save time & money by using VJ Loops in your projects, livestreams on FB, Youtube, Twitch, clubs . Sea water background motion
https://www.vjloops.com/stock-video/sea-water-background-motion-155547.html
Filling-in visual motion with soundsFilling-in visual motion with sounds
Information about the motion of objects can be extracted by multiple sensory modalities, and, as a consequence, object motion perception typically involves the integration of multi-sensory information. Often, in naturalistic settings, the flow of such information can be rather discontinuous (e.g. a cat racing through the furniture in a cluttered room is partly seen and partly heard). This study addressed audiovisual interactions in the perception of time-sampled object motion by measuring adaptation aftereffects. We found significant auditory after-effects following adaptation to unisensory auditory and visual motion in depth, sampled at 12.5 Hz. The visually induced (cross-modal) auditory motion after-effect was eliminated if visual adaptors flashed at half of the rate (6.25 Hz). Remarkably, the addition of the highrate acoustic flutter (12.5 Hz) to this ineffective, sparsely time-sampled, visual adaptor restored the auditory after-effect to a level comparable to what was seen with high-rate bimodal
http://publications.lib.chalmers.se/publication/99337-filling-in-visual-motion-with-sounds
IIT People - Lorella BattelliIIT People - Lorella Battelli
1. Biological motion perception. We are conducting TMS experiments aiming at determining the role played by functionally different visual areas (namely the posterior Superior Temporal Sulcus -pSTS- and the Extrastriate Body Area -EBA-) in biological motion perception. Dr. Joris Vangeneugden, a former postdoc, has used multivoxel pattern analysis (MVPA) in an fMRI experiment aimed at determining whether pSTS and EBA respond differently to a walker orientation vs walking direction. The subsequent TMS experiment has shown a direct involvement of those areas in the two types of motion patterns (orientation vs direction). We are now trying to determine the role of different visual areas in walker orientation discrimination, using more ecological stimuli (3D walkers) (Dr. Nicholas Peatfield, postdoctoral fellow).. 2. Relative timing in vision. This project aims at determining the neural as well as behavioural correlates of timing in vision. We have previously shown that higher level visual areas ...
https://www.iit.it/it/people/lorella-battelli
10 Linear Motion Examples in Daily Life - StudiousGuy10 Linear Motion Examples in Daily Life - StudiousGuy
When an object tends to move along a straight line, it is said to be exhibiting linear motion. Linear motion is also known as rectilinear motion. A number of our daily life activities such as walking, bowling, playing on a slide, etc., display linear motion in real life. In other words, the straight-line motion of an object is known as linear motion.. ...
https://studiousguy.com/linear-motion-examples/
CiteSeerX - Kernel-based Multiple Cue Algorithm for Object SegmentationCiteSeerX - Kernel-based Multiple Cue Algorithm for Object Segmentation
CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): This paper proposes a novel algorithm to solve the problem of segmenting foreground-moving objects from the background scene. The major cue used for object segmentation is the motion information, which is initially extracted from MPEG motion vectors. Since the MPEG motion vectors are generated for simple video compression without any consideration of visual objects, they may not correspond to the true motion of the macroblocks. We propose a Kernel-based Multiple Cue (KMC) algorithm to deal with the above inconsistency of MPEG motion vectors and use multiple cues to segment moving objects. KMC detects and calibrates camera movements; and then finds the kernels of moving objects. The segmentation starts from these kernels, which are textured regions with credible motion vectors. Beside motion information, it also makes use of color and texture to help achieving a better segmentation. Moreover, KMC can keep track of the segmented
http://citeseer.ist.psu.edu/viewdoc/summary?doi=10.1.1.43.1931
The contribution of one-dimensional motion mechanisms to the perceived direction of drifting plaids and their aftereffects<...The contribution of one-dimensional motion mechanisms to the perceived direction of drifting plaids and their aftereffects<...
TY - JOUR. T1 - The contribution of one-dimensional motion mechanisms to the perceived direction of drifting plaids and their aftereffects. AU - Alais, David. AU - Wenderoth, Peter. AU - Burke, Darren. PY - 1994. Y1 - 1994. N2 - When motion aftereffects (MAEs) are measured by adapting to a drifting plaid (simultaneous adaptation) or by adapting to the plaids component gratings in alternation (alternating adaptation), it has been shown that the velocity and duration of the MAE are smaller in the latter case [Wenderoth, P., Bray, R. & Johnstone, S. (1988) Perception, 17, 81-91; Burke, D. & Wenderoth, P. (1993) Vision Research, 33, 351-359]. However, Burke and Wenderoth additionally reported that the directions of MAEs induced by simultaneous and alternating adaptation were identical, an apparent inconsistency if the differences in duration and velocity were due to the presence of blobs at the component grating intersects in the simultaneous case. Presumably, the direction of the blobs should ...
https://researchers.mq.edu.au/en/publications/the-contribution-of-one-dimensional-motion-mechanisms-to-the-perc
Gaussian Process Regression Flow for Analysis of Motion Trajectories | ResearchGaussian Process Regression Flow for Analysis of Motion Trajectories | Research
Recognition of motions and activities of objects in videos requires effective representations for analysis and matching of motion trajectories. In this paper, we introduce a new representation speciï¬ cally aimed at matching motion trajectories. We model a trajectory as a continuous dense flow ï¬ eld from a sparse set of vector sequences using Gaussian Process Regression. Furthermore, we introduce a random sampling strategy for learning stable classes of motions from limited data. Our representation allows for incrementally predicting possible paths and detecting anomalous events from online trajectories. This representation also supports matching of complex motions with acceleration changes and pauses or stops within a trajectory. We use the proposed approach for classifying and predicting motion trajectories in trafï¬ c monitoring domains and test on several data sets. We show that our approach works well on various types of complete and incomplete trajectories from a variety of ...
https://research.nvidia.com/publication/gaussian-process-regression-flow-analysis-motion-trajectories
Self-motion and the perception of stationary objects - CogprintsSelf-motion and the perception of stationary objects - Cogprints
One of the ways we perceive shape is through seeing motion. Visual motion may be actively generated (for example, in locomotion), or passively observed. In the study of how we perceive 3D structure from motion (SfM), the non-moving, passive observer in an environment of moving rigid objects has been used as a substitute for an active observer moving in an environment of stationary objects; the rigidity hypothesis has played a central role in computational and experimental studies of SfM. Here we demonstrate that this substitution is not fully adequate, because active observers perceive 3D structure differently from passive observers, despite experiencing the same visual stimulus: active observers perception of 3D structure depends on extra-visual self-motion information. Moreover, the visual system, making use of the self-motion information treats objects that are stationary (in an allocentric, earth-fixed reference frame) differently from objects that are merely rigid. These results show ...
http://cogprints.org/950/
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Ryusuke Hirai, Tokyo JP - Patent applicationsRyusuke Hirai, Tokyo JP - Patent applications
Apparatus, Method, and Computer Program Product for Generating Interpolated Images - An interpolated image generating apparatus calculates a motion vector reliability level indicating reliability of a motion vector used for inserting an interpolated image, the value of the motion vector reliability level being determined in such a manner that the stronger the correlation is between a source image area and a destination image area that are brought into correspondence with each other by the motion vector, the larger is the value. The apparatus also calculates a failure-preventing vector reliability level indicating reliability of a predetermined failure-preventing vector used for preventing image failures. The apparatus obtains a motion compensated image based on the motion vector, obtains a failure-preventing image based on the failure-preventing vector, and blends the motion compensated image and the failure-preventing image according to a weighted average thereof calculated by using a weighting ...
http://www.patentsencyclopedia.com/inventor/ryusuke-hirai-tokyo-jp-1/
Dyslexics and Visual Motion Problems - MyomancyDyslexics and Visual Motion Problems - Myomancy
Developmental dyslexia is associated with deficits in the processing of visual motion stimuli, and some evidence suggests that these motion processing deficits are related to various reading subskills deficits. …. Results suggest that there are in fact two distinct motion processing deficits in developmental dyslexia, rather than one as assumed by previous research, and that each of these deficits is associated with a different type of reading subskills deficit. A deficit in detecting coherent motion is selectively associated with low accuracy on reading subskills tests, and a deficit in discriminating velocities is selectively associated with slow performance on these same tests. In addition, … The two distinct patterns of motion processing and reading deficits demonstrated by this study may reflect separable underlying neurocognitive mechanisms of developmental dyslexia. ...
http://myomancy.com/the_latest_issu/
Delineating extrastriate visual area MT(V5) using cortical myeloarchitecture. - Oxford centre for Human Brain Activity
Visual area MT is a model of choice in primate neurophysiological and human imaging research of visual perception, due to its considerable sensitivity to moving stimuli and the strong direction selectivity of its neurons. While the location of MT(V5) in the non-human primate is easily identifiable based on gross anatomy and appears consistent between animals, this is less the case in human subjects. Functional localisation of human MT+ with moving stimuli can identify a group of motion-sensitive regions, but defining MT proper has proved more challenging. In this review we consider approaches to studying the cyto- and myleoarchitecture of this cortical area that may, in the future, allow identification of human MT in vivo based on anatomy.
https://www.ohba.ox.ac.uk/publications/394957
Bouncing or streaming? Exploring the influence of auditory cues on the interpretation of ambiguous visual motion. - Oxford...
When looking at two identical objects moving toward each other on a two-dimensional visual display, two different events can be perceived: the objects can either be seen to bounce off each other, or else to stream through one another. Previous research has shown that the large bias normally seen toward the streaming percept can be modulated by the presentation of an auditory event at the moment of coincidence. However, previous behavioral research on this crossmodal effect has always relied on subjective report. In the present experiment, we used a novel experimental design to provide a more objective/implicit measure of the effect of an auditory cue on visual motion perception. In our study, two disks moved toward each other, with the point of coincidence hidden behind an occluder. When emerging from behind the occluder, the disks (one red, the other blue) could either follow the same trajectory (streaming) or else move in the opposite direction (bouncing). Participants made speeded discrimination
https://www.neuroscience.ox.ac.uk/publications/13131
Sensors | Free Full-Text | Sensing Movement: Microsensors for Body Motion Measurement | NotesSensors | Free Full-Text | Sensing Movement: Microsensors for Body Motion Measurement | Notes
Recognition of body posture and motion is an important physiological function that can keep the body in balance. Man-made motion sensors have also been widely applied for a broad array of biomedical applications including diagnosis of balance disorders and evaluation of energy expenditure. This paper reviews the state-of-the-art sensing components utilized for body motion measurement. The anatomy and working principles of a natural body motion sensor, the human vestibular system, are first described. Various man-made inertial sensors are then elaborated based on their distinctive sensing mechanisms. In particular, both the conventional solid-state motion sensors and the emerging non solid-state motion sensors are depicted. With their lower cost and increased intelligence, man-made motion sensors are expected to play an increasingly important role in biomedical systems for basic research as well as clinical diagnostics.
http://www.mdpi.com/1424-8220/11/1/638/notes
Vision contingent auditory pitch aftereffects<...
TY - JOUR. T1 - Vision contingent auditory pitch aftereffects. AU - Teramoto, Wataru. AU - Kobayashi, Maori. AU - Hidaka, Souta. AU - Sugita, Yoichi. PY - 2013/8. Y1 - 2013/8. N2 - Visual motion aftereffects can occur contingent on arbitrary sounds. Two circles, placed side by side, were alternately presented, and the onsets were accompanied by tone bursts of high and low frequencies, respectively. After a few minutes of exposure to the visual apparent motion with the tones, a circle blinking at a fixed location was perceived as a lateral motion in the same direction as the previously exposed apparent motion (Teramoto et al. in PLoS One 5:e12255, 2010). In the present study, we attempted to reverse this contingency (pitch aftereffects contingent on visual information). Results showed that after prolonged exposure to the audio-visual stimuli, the apparent visual motion systematically affected the perceived pitch of the auditory stimuli. When the leftward apparent visual motion was paired with the ...
https://waseda.pure.elsevier.com/en/publications/vision-contingent-auditory-pitch-aftereffects
Patent US20050212756 - Gesture based navigation of a handheld user interface - Google PatentsPatent US20050212756 - Gesture based navigation of a handheld user interface - Google Patents
A motion controlled handheld device includes a display having a viewable surface and operable to generate a current image. The device includes a motion detection module operable to detect motion of the device within three dimensions and to identify components of the motion in relation to the viewable surface. The device also includes a gesture database comprising a plurality of gestures, each gesture defined by a motion of the device with respect to a first position of the device. The gestures comprise at least four planar gestures each defined by a motion vector generally aligned in parallel with the viewable surface. The device includes a gesture mapping database mapping each of the gestures to a corresponding command, the gesture mapping database mapping each of the four planar gestures to a corresponding grid navigation command. The device also includes a motion response module operable to identify a matching one of the planar gestures based on the motion and to determine the corresponding one of
http://www.google.co.uk/patents/US20050212756
PLOS ONE: Direction Specific Biases in Human Visual and Vestibular Heading PerceptionPLOS ONE: Direction Specific Biases in Human Visual and Vestibular Heading Perception
Heading direction is determined from visual and vestibular cues. Both sensory modalities have been shown to have better direction discrimination for headings near straight ahead. Previous studies of visual heading estimation have not used the full range of stimuli, and vestibular heading estimation has not previously been reported. The current experiments measure human heading estimation in the horizontal plane to vestibular, visual, and spoken stimuli. The vestibular and visual tasks involved 16 cm of platform or visual motion. The spoken stimulus was a voice command speaking a heading angle. All conditions demonstrated direction dependent biases in perceived headings such that biases increased with headings further from the fore-aft axis. The bias was larger with the visual stimulus when compared with the vestibular stimulus in all 10 subjects. For the visual and vestibular tasks precision was best for headings near fore-aft. The spoken headings had the least bias, and the variation in precision was
http://journals.plos.org/plosone/article/authors?id=10.1371/journal.pone.0051383&imageURI=info:doi/10.1371/journal.pone.0051383.g008
TagBrainScales - LaurentPerrinetTagBrainScales - LaurentPerrinet
Short presentation of a large moving pattern elicits an Ocular Following Response (OFR) that exhibits many of the properties attributed to low-level motion processing such as spatial and temporal integration, contrast gain control and divisive interaction between competing motions. Similar mechanisms have been demonstrated in V1 cortical activity in response to center-surround gratings patterns measured with real-time optical imaging in awake monkeys. More recent experiments of OFR have used disk gratings and bipartite stimuli which are optimized to study the dynamics of center-surround integration. We quantified two main characteristics of the global spatial integration of motion from an intermediate map of possible local translation velocities: (i) a finite optimal stimulus size for driving OFR, surrounded by an antagonistic modulation and (ii) a direction selective suppressive effect of the surround on the contrast gain control of the central stimuli [Barthelemy06,Barthelemy07].In fact, the ...
http://invibe.net/LaurentPerrinet/TagBrainScales
How studying human self-motion perception can improve VR technology and viceversa :: MPG.PuReHow studying human self-motion perception can improve VR technology and viceversa :: MPG.PuRe
Author: Pretto, P; Genre: Talk; Published in Print: 2017-09-12; Title: How studying human self-motion perception can improve VR technology and viceversa
https://pure.mpg.de/pubman/faces/ViewItemFullPage.jsp?itemId=item_2552338
China Infrared Motion Sensor Switch, Infrared Motion Sensor Switch Manufacturers, Suppliers, Price | Made-in-China.comChina Infrared Motion Sensor Switch, Infrared Motion Sensor Switch Manufacturers, Suppliers, Price | Made-in-China.com
China Infrared Motion Sensor Switch manufacturers - Select 2020 high quality Infrared Motion Sensor Switch products in best price from certified Chinese Switch manufacturers, China Sensor suppliers, wholesalers and factory on Made-in-China.com
https://www.made-in-china.com/products-search/hot-china-products/Infrared_Motion_Sensor_Switch.html
A different opinion from Galens about the motions of the headA different opinion from Galens about the motions of the head
A different opinion from Galens about the motions of the head In the first place, we move the head either with a primary motion in which the neck holds still, or with a secondary motion, where the head follows the motion of the neck even if you try to move it in a different direction from the neck. There are two movements peculiar to the head: in one, we bend it forward and incline it backward, or extend it. You perform this motion with a rigid, unmoved neck or with a neck moved simultaneously, whether you do it with a motion equal with the head, or a contrary motion. For although you move the neck forward and the head necessarily follows the neck, still you can bend the head backward with its own motion and easily observe that the head and neck have their separate and distinct motions in bending and unbending. The other peculiar movement of the head should be counted that by which we rotate it more or less as if we were spinning it as a wheel is turned on an axle. You will undergo this motion ...
http://vesalius.northwestern.edu/sections/FA.1.15.06.html
Advances in Understanding Mechanisms and Treatment of by R. John Leigh, Michael W. Devereaux - A Bike Life Book Archive
1998;9:1807-1810. 67. Shallo-Hoffmann J, Bronstein AM. Motion detection in patients with absent vestibular function. Vision Res. 2003;43:1589-1594. 68. Acheson JF, Cassidy L, Grunfeld EA, ShalloHoffmann JA, Bronstein AM. Elevated visual motion detection thresholds in adults with acquired ophthalmoplegia. Br J Ophthalmol. 2001;85:1447-1449. 69. Bedell HE. Perception of a clear and stable visual world with congenital nystagmus. Optom Vision Sci. 2000;77:573-581. 22 BASIC CONCEPTS OF STABLE VISION AND GAZE 70. 3. Southall JPC, ed. New York: Dover;1962. von Holst E, Mittelstädt H. The principal of reafference: interactions between the central nervous system and the peripheral organs. In: Dodwell PC, ed. Perceptual Processing: Stimulus Equivalence and Pattern Recognition. New York: Appleton Century Crofts;1971:41-71. Gauthier GM, Nommay D, Vercher JL. The role of ocular muscle proprioception in visual localization of targets. Science. 1990;249:58-61. Bridgeman B, Stark L. Ocular proprioception and ...
http://abikelife.com/index.php/epub/advances-in-understanding-mechanisms-and-treatment-of-infantile-forms-of
Dendritic Integration and Its Role in Computing Image Velocity | ScienceDendritic Integration and Its Role in Computing Image Velocity | Science
Preparation and setup: Female blowflies (C. erythrocephala) were prepared as described in (17). Visual stimuli were produced by a grating drum illuminated from the inside by an arc lamp, the image of which was projected onto a screen (10 × 8 cm) positioned 10 cm below the fly (Fig. 1A). The fly was mounted to look down on the stimulus and the objective was above the back of its opened head capsule. The square wave grating had a spatial wavelength of 26°, a mean luminance of 17.7 cd/m2, and a contrast of 92%. The velocity of the moving pattern depended on the type of experiment and is indicated in the figure legends. Electrophysiological recording: Electrodes were pulled on a Brown-Flaming micropipette puller (P-97, Sutter Instruments) using thin-wall glass capillaries with a diameter of 1 mm (GC100TF-10, Clark). When filled with 2 M KAc, 0.5 M KCl, and 8.8 mM calcium green, they had resistances of about 30 to 40 MΩ. A SEC-10L amplifier (npi-electronics) was used throughout the experiments and ...
https://science.sciencemag.org/content/281/5384/1848?ijkey=b6814279f02e7a063d7abe1d3b4204889ca80f23&keytype2=tf_ipsecsha
The Pros and Cons of Portable Gas Detection
Best Motion Detection Security Cameras Motion Sensor User rating: 4.5/5Published: Feb 08, 2013 Kangaroo Motion Sensor. Check price. Designed for simplicity, the Kangaroo Home Security …Ring Motion-Activated Camera. Check price. Engineered for your enhanced protection, this Ring …Simplisafe Motion Sensor. Learn more about Simplisafe Motion Sensor. Great for pet-owners, this …ADT Motion Sensor. Learn more about ADT Motion Sensor. Designed to be pet-friendly and …See full list on safety.comPeople also askWhat is the best camera for home security?What is the best camera for home security?Protect yourself with the best home security cameras of 2019. After spending 2,500 hours testing smart security devices,our pick for the best home security camera is the Arlo Pro 2because it has a wide variety of features and plenty of cloud storage.The best home security cameras for 2019. Get Price ...
https://wilcokats.nl/sf6sensor/5918.html
Measurement of Image Velocity by David J. Fleet (auth.) - Illustrated First BooksMeasurement of Image Velocity by David J. Fleet (auth.) - Illustrated First Books
2 if the k2 -axis is replaced by the w-axis. 0). 0). 8 octaves, this process eventually yields 23 filter types: 6 tuned to speeds about 0 with preferred directions at multiples of 30 degrees; 10 tuned to speeds of 1/v3 with directions at every 36 degrees; 6 tuned to speeds of v3 with directions every 60 degrees; and a flicker channel tuned to non-zero temporal frequencies and zero spatial frequency [Fleet, 1988]. We now consider the discrete sampling of the output of a single filter type. 4). 2) yields the normal velocity of level contours of constant intensity, Vn = vnn, where n is the direction of the spatial intensity gradient. 3) is that the two components of the 2-d velocity v are constrained by only one linear equation. Further constraints are therefore necessary to determine both elements of v. , 1989]. 4) also follows from the assumption that I(x, t) is conserved: = o. 2). 2) and other differential constraints to yield an over-determined system of linear equations. e. if the intensity ...
https://illustratedfirstworldwar.com/books/measurement-of-image-velocity-1-st-edition
Embodied perception : neuropsychological and neuroimaging studies of language, vision, and attentionEmbodied perception : neuropsychological and neuroimaging studies of language, vision, and attention
Author(s): Saygın, Ayşe Pınar | Abstract: In nature, organisms not only process what is in the environment, but also continuously use the sensory information gathered in planning and acting upon the environment. Thus a theory of perception which regards it as a passive, receptive process is not likely to provide a complete picture. Instead, we can view perception as intimately related to processes and brain areas which were traditionally viewed as motor or executive in nature. I have studied the neural substrates of human perception in different modalities and at different levels of complexity. There are three main research areas represented in this dissertation: 1) The sensorimotor neural bases of language; 2) Sensory and motor areas involved in biological motion perception; 3) Representations of visual space in higher cortical areas and their response properties. First, in neuropsychological studies, I have examined the extent to which language comprehension shares processing and neural resources
https://escholarship.org/uc/item/0q54r2fc
Patente US7224731 - Motion estimation/compensation for screen capture video - Google PatentesPatente US7224731 - Motion estimation/compensation for screen capture video - Google Patentes
The present invention relates to motion estimation and compensation. For example, a screen capture encoder performs motion estimation that is adapted to screen capture video in various respects. For example, the motion estimation uses a distortion measure based upon the count of equal/unequal pixels in two regions, sub-samples the distortion measure to speed up motion estimation, and/or uses a search pattern that prioritizes types of motion common in screen capture video. Or, a screen capture decoder performs motion compensation that is adapted to screen capture video in various respects. For example, the decoder performs the motion compensation for pixels with different values at corresponding locations in a current frame and a reference frame, but not for all pixels of the current frame. Alternatively, an encoder/decoder performs the motion estimation/compensation to compress/decompress other kinds of content.
http://www.google.es/patents/US7224731?dq=flatulence
VLSI architecture, in particular for motion estimation applications - Patent # 6724823 - PatentGenius
A VLSI architecture adapted to be implemented in the form of a reusable IP cell and including a motion estimation engine, configured to process a cost function and identify a motion vector which minimizes the cost function, an internal memory configured to store the sets of initial candidate vectors for the blocks of a reference frame, first and second controllers to manage the motion vectors and manage an external frame memory, a reference synchronizer to align, at the input to the estimation engine, the data relevant to the reference blocks with the data relevant to candidate blocks coming from the second controller, and a control unit for timing the units included in the architecture and the external interfacing of the architecture itself.
http://www.patentgenius.com/patent/6724823.html
Perception of rotation, path, and heading in circular trajectories<...
TY - JOUR. T1 - Perception of rotation, path, and heading in circular trajectories. AU - Nooij, Suzanne A.E.. AU - Nesti, Alessandro. AU - Bülthoff, Heinrich H.. AU - Pretto, Paolo. PY - 2016/8/1. Y1 - 2016/8/1. N2 - When in darkness, humans can perceive the direction and magnitude of rotations and of linear translations in the horizontal plane. The current paper addresses the integrated perception of combined translational and rotational motion, as it occurs when moving along a curved trajectory. We questioned whether the perceived motion through the environment follows the predictions of a self-motion perception model (e.g., Merfeld et al. in J Vestib Res 3:141-161, 1993; Newman in A multisensory observer model for human spatial orientation perception, 2009), which assume linear addition of rotational and translational components. For curved motion in darkness, such models predict a non-veridical motion percept, consisting of an underestimation of the perceived rotation, a distortion of the ...
https://koreauniv.pure.elsevier.com/en/publications/perception-of-rotation-path-and-heading-in-circular-trajectories
A high dynamic range CMOS image sensor design based on two-frame composition - IEEE Conference PublicationA high dynamic range CMOS image sensor design based on two-frame composition - IEEE Conference Publication
In this paper, we present a CMOS image sensor design with a high dynamic range. This feature is achieved by a two-frame scheme, in which an image is captur
http://ieeexplore.ieee.org/document/1241549/?reload=true&arnumber=1241549&contentType=Conference+Publications
Motion perception of large objects gets worse during infant development | EurekAlert! Science NewsMotion perception of large objects gets worse during infant development | EurekAlert! Science News
Humans can visually perceive the motion of a small object better than that of a large one. By contrast, according to a study reported in the journal Current Biology on September 5, babies under 6 months of age are better at seeing the movement of large objects than small objects.
https://www.eurekalert.org/pub_releases/2019-09/cu-mpo090419.php
Are dyslexics visual deficits limited to measures of dorsal stream function? - Department of Physiology, Anatomy and Genetics ...
We tested the hypothesis that the differences in performance between developmental dyslexics and controls on visual tasks are specific for the detection of dynamic stimuli. We found that dyslexics were less sensitive than controls to coherent motion in dynamic random dot displays. However, their sensitivity to control measures of static visual form coherence was not significantly different from that of controls. This dissociation of dyslexics performance on measures that are suggested to tap the sensitivity of different extrastriate visual areas provides evidence for an impairment specific to the detection of dynamic properties of global stimuli, perhaps resulting from selective deficits in dorsal stream functions.
https://www.dpag.ox.ac.uk/publications/908011
Improving Motion | ERMIImproving Motion | ERMI
Any motion loss can affect daily life. Severe motion loss significantly affects lifestyle and daily living. In this way, the emotional state of a patient suffering severe motion loss can also be affected, sometimes even redefining a sense of personal identity.. When motion loss does occur, early recognition and appropriate treatment is absolutely needed to restore normal motion and improve function and quality of life.. ERMI, Inc. is committed to advancing research in orthopaedic medicine and to understanding the effectiveness of different treatments for severe motion loss patients. Our vision is to Improve Motion, and we strive to work with clinicians, and healthcare professionals in partnership to serve patients and achieve superior outcomes. Get Motion is our call to action to work with deliberate care, focus, and importance.. We created this section on Improving Motion as a destination to help communicate and better inform visitors more about motion loss and ERMI, Inc.. ...
http://getmotion.com/improving-motion
Motion Sensors, Inc. Announces ATEX Certified Speed Sensors with Ambient Temperature Rating up to 80CMotion Sensors, Inc. Announces ATEX Certified Speed Sensors with Ambient Temperature Rating up to 80C
Motion Sensors, Inc. Announces ATEX Certified Speed Sensors with Ambient Temperature Rating up to 80C - Apr 28, 2009 - Motion Sensors, Inc.
https://news.thomasnet.com/fullstory/motion-sensors-inc-announces-atex-certified-speed-sensors-with-ambient-temperature-rating-up-to-80c-826261
Motion perceptionMotion perception
The problem of motion estimation generalizes to binocular vision when we consider occlusion or motion perception at relatively ... Motion perception is studied by many disciplines, including psychology (i.e. visual perception), neurology, neurophysiology, ... Baker CL, Hess RF, Zihl J (February 1991). "Residual motion perception in a "motion-blind" patient, assessed with limited- ... Interactive Reichardt Detector Video demonstrating second-order motion perception Visual Motion Analysis Visual Neuroscience, ...
https://en.wikipedia.org/wiki/Motion_perception
Biological motion perceptionBiological motion perception
... is the act of perceiving the fluid unique motion of a biological agent. The phenomenon was first ... Old models of biological motion perception are concerned with tracking joint and limb motion relative to one another over time ... The following models have shown that both form and motion are important components of biological motion perception. However, to ... However, recent experiments in biological motion perception have suggested that motion information is unimportant for action ...
https://en.wikipedia.org/wiki/Biological_motion_perception
Glossary of machine visionGlossary of machine vision
Motion perception. MP is the process of inferring the speed and direction of objects and surfaces that move in a visual scene ... The perception of the frequency (or wavelength) of light, and can be compared to how pitch (or a musical note) is the ... Depth perception. DP is the visual ability to perceive the world in three dimensions. It is a trait common to many higher ... Depth perception allows the beholder to accurately gauge the distance to an object. Diaphragm. In optics, a diaphragm is a thin ...
https://en.wikipedia.org/wiki/Glossary_of_machine_vision
List of fictional astronauts (modern period, works released 2010-2029)List of fictional astronauts (modern period, works released 2010-2029)
Josh Tanner (Director/Co-Writer) (2021). Decommissioned (Motion picture). Perception Pictures. Retrieved January 22, 2021. ... Andrew McGee (Director/Editor) (2018). The Watchers (Motion picture). Retrieved July 2, 2018. David F. Jacobson, Andrew McGee ( ... Nikhil Allug (Writer/Director) (2011). Nothingness (Motion picture). Retrieved May 9, 2017. Orrantia, J. G.; Kaz (July 29, 2011 ... ISBN 978-1-5011-2715-1. Jonathan Gribbin (Director/Co-Writer) (2012). Blast Off (Motion picture). Retrieved May 9, 2017. ...
https://en.wikipedia.org/wiki/List_of_fictional_astronauts_(modern_period,_works_released_2010–2029)
List of films with live action and animationList of films with live action and animation
... stop-motion animation sequences) 2019 - Spider-Man: Far From Home (stop motion end credits sequence created by Perception) 2019 ... All about Perception! Motion Award recipient". Motionographer.com. Retrieved October 15, 2020. Gelmini, David (March 19, 2020 ... stop motion skeletons) 1990 - Gremlins 2: The New Batch (electric gremlin, stop motion, and Chuck Jones animated opening and ... opening and closing credits sequence in stop-motion) 1961 - Babes in Toyland (stop-motion soldiers) 1962 - Jack the Giant ...
https://en.wikipedia.org/wiki/List_of_films_with_live_action_and_animation
Neurodevelopmental framework for learningNeurodevelopmental framework for learning
Blake, R.; Shiffrar, M. (2007). "Perception of Human Motion". Annual Review of Psychology. 58 (47): 47-73. doi:10.1146/annurev. ... Blake, R.; Shiffrar, M. (2007). "Perception of Human Motion". Annual Review of Psychology. 58 (47): 47-73. doi:10.1146/annurev. ...
https://en.wikipedia.org/wiki/Neurodevelopmental_framework_for_learning
List of fictional astronauts (Project Mercury era)List of fictional astronauts (Project Mercury era)
Josh Tanner (Director/Co-Writer) (2013). The Landing (Motion picture). Perception Pictures. Retrieved September 16, 2016. Spiga ... J. Van Auken (Writer/Director) (2011). The Last Cosmonaut (Motion picture) (in Russian and English). Retrieved June 16, 2015. ... Robert Asher (Director) (1960). The Bulldog Breed (Motion picture). Retrieved February 3, 2021. Scheib, Richard. "The Bulldog ... ISBN 978-1-61937-146-0. John Merizalde (Director) (2012). Waltz for One (Motion picture). Intellectual Propaganda. Retrieved ...
https://en.wikipedia.org/wiki/List_of_fictional_astronauts_(Project_Mercury_era)
Vestibular systemVestibular system
Lawson, B. D., & Riecke, B. E. (2014). The Perception of Body Motion. Handbook of Virtual Environments, CRC Press, 163-196. ... the motion disorientation is often called motion sickness (or seasickness, car sickness, simulation sickness, or airsickness). ... These otoconia add to the weight and inertia of the membrane and enhance the sense of gravity and motion. With the head erect, ... When the vestibular system is stimulated without any other inputs, one experiences a sense of self-motion. For example, a ...
https://en.wikipedia.org/wiki/Vestibular_system
180-degree rule180-degree rule
The perception of motion pictures. In M. P. Friedman & E. C. Carterette (Eds.), Cognitive ecology: Handbook of perception and ... Perception, 4, 97-10. doi:10.1068/p040097 Magliano, J. P., & Zacks, J. M. (2011). The impact of continuity editing in narrative ...
https://en.wikipedia.org/wiki/180-degree_rule
Illusions of self-motionIllusions of self-motion
Lawson, B. D., & Riecke, B. E. (2014). The Perception of Body Motion. Handbook of Virtual Environments, CRC Press, 163-196. " ... Illusions of self-motion (or "vection") occur when one perceives bodily motion despite no movement taking place. One can ... "Perceptual and Cognitive Factors for Self-Motion Simulation in Virtual Environments: How Can Self-Motion Illusions ("Vection") ... Vertigo is not associated with illusory self-motion as it does not typically make you feel as though you are moving; however, ...
https://en.wikipedia.org/wiki/Illusions_of_self-motion
Sensory cueSensory cue
cite book}}: ,first= has generic name (help) Rogers, edited by William Epstein, Sheena (1995). Perception of space and motion. ... cite book}}: ,first= has generic name (help) Rogers, edited by William Epstein, Sheena (1995). Perception of space and motion. ... 2-5. ISBN 978-0-8385-2670-5. G. Johansson (1973). "Visual perception of biological motion and a model for its analysis". ... Motion parallax relies head and body movement to produce the necessary viewpoints. The visual system can detect motion both ...
https://en.wikipedia.org/wiki/Sensory_cue
Structure from motion (psychophysics)Structure from motion (psychophysics)
In visual perception, structure from motion (SFM) refers to how humans recover depth structure from object's motion. The human ... Rogers, Brian; Graham, Maureen (April 1979). "Motion Parallax as an Independent Cue for Depth Perception". Perception. 8 (2): ... Johansson, Gunnar (1973-06-01). "Visual perception of biological motion and a model for its analysis". Perception & ... "Perceived motion in structure from motion: pointing responses to the axis of rotation". Perception & Psychophysics. 56 (1): 91- ...
https://en.wikipedia.org/wiki/Structure_from_motion_(psychophysics)
Motion aftereffectMotion aftereffect
Perception, 25, 1177-1188. Wade, N. J., Thompson, P., & Morgan, M. (2014). The after-effect of Adolf Wohlgemuth's seen motion. ... The motion aftereffect is believed to be the result of motion adaptation. For example, if one looks at a waterfall for about a ... The illusory upwards movement is the motion aftereffect. This particular motion aftereffect is also known as the waterfall ... Afterimage Motion perception Addams, R. (1834). An account of a peculiar optical phenomenon seen after having looked at a ...
https://en.wikipedia.org/wiki/Motion_aftereffect
Kortes third law of apparent motionKorte's third law of apparent motion
Gepshtein, S.; Kubovy, M. (2007). "The lawful perception of apparent motion". Journal of Vision. 7 (8): 9. doi:10.1167/7.8.9. ... Kolers, Paul A. (1972). Aspects of Motion Perception: International Series of Monographs in Experimental Psychology. Oxford: ... In psychophysics, Korte's third law of apparent motion is an observation relating the phenomenon of apparent motion to the ... Korte's law also involves a constancy of velocity through apparent motion and it is said that data do not support it. ...
https://en.wikipedia.org/wiki/Korte's_third_law_of_apparent_motion
Flash lag illusionFlash lag illusion
Rao, Rajesh P. N.; Eagleman, David M.; Sejnowski, Terrence J. (June 2001). "Optimal Smoothing in Visual Motion Perception". ... The motion extrapolation hypothesis asserts that the visual system will take care of such delays by extrapolating the position ... Eagleman & Sejnowski found that the perception attributed to the time of the flash depends on events in the next ~80 ms after ... In backward masking, a stimulus followed in rapid succession by a second stimulus can block or modify the perception of the ...
https://en.wikipedia.org/wiki/Flash_lag_illusion
Corollary discharge theoryCorollary discharge theory
Heeger D (2006). "Perception Lecture Notes: Visual Motion Perception". Department of Psychology, New York University. Retrieved ... The corollary discharge theory (CD) of motion perception helps understand how the mind can detect motion through the visual ... If the two signals cancel then no motion is perceived, but if they do not cancel then the residual signal is perceived as ... He was studying apparent motion and developed early theories in an error of the mind to account for efferent signals centuries ...
https://en.wikipedia.org/wiki/Corollary_discharge_theory
Saccadic maskingSaccadic masking
Tatler, B. W.; Trościanko, T (2002). "A rare glimpse of the eye in motion" (PDF). Perception. 31 (11): 1403-1406. doi:10.1068/ ... A saccade is a fast eye motion, and because it is a motion that is optimised for speed, there is inevitable blurring of the ... The eyes can never be observed in motion, yet an external observer clearly sees the motion of the eyes. The phenomenon is often ... and subsequent motion blur of the image) nor the gap in visual perception is noticeable to the viewer. The phenomenon was first ...
https://en.wikipedia.org/wiki/Saccadic_masking
Representational momentumRepresentational momentum
Hubbard, T. L.; Bharucha, J. J. (1988). "Judged displacement in apparent vertical and horizontal motion". Perception & ... Moreover, the overall pattern of the motion is anticipated, so that when shown an oscillatory motion, like a pendulum, the ... Implied events show a series of pictures that suggest a motion, but at a slow frame rate so there is no apparent motion. Smooth ... "Representational momentum and event course anticipation in the perception of implied periodical motions". Journal of ...
https://en.wikipedia.org/wiki/Representational_momentum
Embodied cognitionEmbodied cognition
Casile A, Giese MA (2006). "Nonvisual motor training influences biological motion perception". Current Biology. 16 (1): 69-74. ... One example of such active interaction between perception and the body is the case that distance perception can be influenced ... As experiences are received, neural states are reenacted in action, perception, and introspection systems. Perception includes ... Embodied perception-action experience may serve as a tool for learning that extends across the life span, from infancy to ...
https://en.wikipedia.org/wiki/Embodied_cognition
George SperlingGeorge Sperling
1984 van Santen, J. P. H., & Sperling, G. (1984). Temporal covariance model of human motion perception. Journal of the Optical ... and motion perception. Sperling, George (1963). "A model for visual memory tasks". Human Factors. 5: 19-31. doi:10.1177/ ... a general basis for studying non-Fourier motion perception". Journal of the Optical Society of America A. 5 (11): 1986-2007. ...
https://en.wikipedia.org/wiki/George_Sperling
Multiple drafts modelMultiple drafts model
Rizzo, M.; Nawrot, M.; Zihl, J. (1995). "Motion and shape perception in cerebral akinetopsia". Brain. 118 (5): 1105-1127. doi: ... an fMRI study of transparent motion perception". NeuroImage. 16 (4): 843-56. doi:10.1006/nimg.2002.1085. PMID 12202074. S2CID ... In other words, once we've explained a perception fully in terms of how it affects us, there is nothing left to explain. In ... Muckli, L.; Singer, W.; Zanella, F.E.; Goebel, R. (Aug 2002). "Integration of multiple motion vectors over space: ...
https://en.wikipedia.org/wiki/Multiple_drafts_model
Max WertheimerMax Wertheimer
Structural rules of motion and space perception (1911-1914)". Zeitschrift für Psychologie mit Zeitschrift für Angewandte ... Further studies of motion perception (1929-1933)". Zeitschrift für Psychologie mit Zeitschrift für Angewandte Psychologie. 196 ... Initial studies of motion perception (1910-1912)". Zeitschrift für Psychologie mit Zeitschrift für Angewandte Psychologie. 195 ... According to Gestalt psychology, perception is a whole. In this sense, perception can shape vision and the other senses.[ ...
https://en.wikipedia.org/wiki/Max_Wertheimer
Victoria MorganVictoria Morgan
"Brain areas involved in perception of biological motion". Journal of Cognitive Neuroscience. 12 (5): 711-20. doi:10.1162/ ...
https://en.wikipedia.org/wiki/Victoria_Morgan
Multisensory integrationMultisensory integration
Kuang, S.; Zhang, T. (2014). "Smelling directions: Olfaction modulates ambiguous visual motion perception". Scientific Reports ... Multimodal perception is how animals form coherent, valid, and robust perception by processing sensory stimuli from various ... Perception is often defined as one's conscious experience, and thereby combines inputs from all relevant senses and prior ... Perception is also defined and studied in terms of feature extraction, which is several hundred milliseconds away from ...
https://en.wikipedia.org/wiki/Multisensory_integration
EarEar
Vertigo refers to the inappropriate perception of motion. This is due to dysfunction of the vestibular system. One common type ... Ménière's disease, labyrinthitis, strokes, and other infective and congenital diseases may also result in the perception of ...
https://en.wikipedia.org/wiki/Ear
Feature detection (nervous system)Feature detection (nervous system)
doi:10.1016/S0003-3472(85)80116-0. Ewert JP (2004). "Motion perception shapes the visual world of amphibians". In Prete FR (ed ... began to expand the feature detection hypothesis and clarify the relationship between single neurons and sensory perception. In ...
https://en.wikipedia.org/wiki/Feature_detection_(nervous_system)
Stereokinetic stimulusStereokinetic stimulus
"Depth Perception in Motion Parallax and Stereokinesis" (PDF). {{cite journal}}: Cite journal requires ,journal= (help) Stefano ... A stereokinetic stimuli generates 3D perception based on 2D rotational motion. A stereokinetic effect is created when flat ... Ernst Mach first reported a depth effect produced by motion in the frontoparallel plane in 1886. Marcel Duchamp first ... Rokers, Bas; Yuille, Alan L.; Liu, Zili (2005-05-21). "The Perceived Motion of a Stereokinetic Stimulus" (PDF). {{cite journal ...
https://en.wikipedia.org/wiki/Stereokinetic_stimulus
Complex cellComplex cell
Adelson E, Bergen J (1985). "Spatiotemporal energy models for the perception of motion". Journal of the Optical Society of ... Wiesel, David H.; Hubel, Torsten N. (2005). Brain and visual perception : the story of a 25-year collaboration ([Online-Ausg ...
https://en.wikipedia.org/wiki/Complex_cell
Phi phenomenonPhi phenomenon
Sekuler, Robert (1996). "Motion Perception: A Modern View of Wertheimer's 1912 Monograph". Perception. 25 (10): 1243-1258. doi: ... "omega motion," "afterimage motion," and "shadow motion." As apparent phi movement is perceived by human's visual system with ... Color phi phenomenon Motion perception Wikimedia Commons has media related to Phi phenomenon. Beta movement and Phi phenomenon ... "Multiplicative nonlinearity in the perception of apparent motion". Vision Research. 44 (17): 2001-2007. doi:10.1016/j.visres. ...
https://en.wikipedia.org/wiki/Phi_phenomenon
Tinkerbell effectTinkerbell effect
Motion Perception and Illusion". He questions the common belief that visual consciousness is a direct translation of the ... Motion Perception and Illusion" (PDF). Journal of Consciousness Studies. 9 (5-6): 1-14. Paris, D.C. (1997). "School Reform: Too ... He relates his argument about the indirectness in motion perception to how, in the play version of Peter Pan, Tinkerbell's ... Durgin applies this expression to the study of human motion detection and perception in his paper "The Tinkerbell Effect: ...
https://en.wikipedia.org/wiki/Tinkerbell_effect
2017-2018 Bergen County eruv controversy2017-2018 Bergen County eruv controversy
In response to the motion, filed on November 2, Upper Saddle River stated that the sign law was tightened because of a divisive ... "overarching perception of anti-Semitism and discrimination". According to Murphy, "When a Holocaust survivor at a public ... The borough's agreement was in exchange for an undertaking from the eruv association not to expand the eruv, and the motion for ... Weil, Gotshal & Manges LLP (October 10, 2017). "Notice of Motion for Preliminary Injunction" (PDF). Retrieved April 10, 2018 - ...
https://en.wikipedia.org/wiki/2017–2018_Bergen_County_eruv_controversy
Nonviolent video gameNonviolent video game
The Buddhist concept of dharma has been emphasized in a number of Buddhist games as a reaction to perceptions of the adharmic ... At the same time, Judge James Moore had taken the motion to revoke Thompson's license under advisement. Jack Thompson appeared ... S. J. Mortal Kombat and children's perceptions of aggressive intent. 1998. Computer Games and Australians Today Archived 25 ...
https://en.wikipedia.org/wiki/Nonviolent_video_game
Cyberpunk 2077Cyberpunk 2077
He would lend his likeness to, voice, and do motion capture for the character. Reeves' dialogue amount is second only to that ... Billcliffe, James (7 December 2020). "Cyberpunk 2077 Review: Complicated, Deep, Perception, Reality". VG247. Archived from the ... Animation systems were remade to better generate muscle movement, motion capture was improved, and environments were created ...
https://en.wikipedia.org/wiki/Cyberpunk_2077
ChildbirthChildbirth
Range of motion and ambulation are typically unaffected during labour and it is encouraged that the mother move to help ... Thompson CJ (2005). "Consumer Risk Perceptions in a Community of Reflexive Doubt". Journal of Consumer Research. 32 (2): 235-48 ... December 2003). "The pain of childbirth: perceptions of culturally diverse women". Pain Management Nursing. 4 (4): 145-54. doi: ... in a gradual expulsive motion. The presenting fetal part then is permitted to descend. Full dilation is reached when the cervix ...
https://en.wikipedia.org/wiki/Childbirth
Andrew Cook (businessman)Andrew Cook (businessman)
"Early Day Motion 390". Parliament.co.uk. Retrieved 25 May 2016. "Global demand sees William Cook plan £5m site investment". The ... the UK Monopolies Commission commended Cook for his perception in producing lasting solutions to the industry's chronic ...
https://en.wikipedia.org/wiki/Andrew_Cook_(businessman)
Articulated body pose estimationArticulated body pose estimation
Synchronized Video and Motion Capture Dataset and Baseline Algorithm for Evaluation of Articulated Human Motion". International ... Perception of human beings in their neighboring environment is an important capability that robots must possess. If a person ... "What you need to know about 3D motion capture". Engadget. AOL Inc. Retrieved 31 May 2017. Kohli, Pushmeet; Shotton, Jamie. "Key ... Moeslund, Thomas B.; Granum, Erik (2001-03-01). "A Survey of Computer Vision-Based Human Motion Capture". Computer Vision and ...
https://en.wikipedia.org/wiki/Articulated_body_pose_estimation
Tuen Mun ParkTuen Mun Park
Koon Kwai Wong; Xiaojiang Yu (2009). Recreation conflict perceptions of urban park visitors: a case study of Tuen Mun Park, ... "Tuen Mun DC passes motion for curbing noisy park singers". Hong Kong Economic Journal. 10 July 2019. Pang, Jessie; Pomfret, ... On 9 July 2019, the Tuen Mun District Council unanimously passed a motion calling to discontinue the "self-entertainment zones ...
https://en.wikipedia.org/wiki/Tuen_Mun_Park
Jennifer ToddJennifer Todd
Todd is a member of the Academy of Motion Picture Arts and Sciences, as well as the Academy of Television Arts and Sciences. In ... the Women in Film Lucy Award in recognition of excellence and innovation in a creative work that have enhanced the perception ...
https://en.wikipedia.org/wiki/Jennifer_Todd
Violin techniqueViolin technique
When used correctly, these motions will create a straight downbow bow stroke. A crucial step is to watch the bow and make sure ... Violinists oscillate backwards, or lower in pitch from the actual note when using vibrato, since aural perception favors the ... Keeping the left wrist relaxed and nearly "straight" allows freedom of finger motion, and reduces the chance of repetitive ... Like any other unwarranted tension, it limits freedom of motion, and increases the risk of discomfort, while decreasing sound ...
https://en.wikipedia.org/wiki/Violin_technique
Rayleigh scatteringRayleigh scattering
Baggioli, M.; Zaccone, A. (2022). "Theory of sound attenuation in amorphous solids from nonaffine motions". J. Phys.: Condens. ... because at low light levels human vision comes mainly from rod cells that do not produce any color perception (Purkinje effect ... motions, which are of crucial importance for the elasticity of amorphous solids. The effect has been derived by Baggioli & ... has been derived from first principles based on wave scattering from microscopic motions of the atoms or particles (i.e. the ...
https://en.wikipedia.org/wiki/Rayleigh_scattering
Journalism in American film and televisionJournalism in American film and television
Journalism has been depicted frequently throughout the 20th century in American pop culture media, such as motion pictures and ... 2000s Anchorman: The Legend of Ron Burgundy (2004, DreamWorks Pictures, 95 minutes) A sarcastic perception on the 1970s male- ... 1970s All the President's Men (1976, Warner Bros., 138 minutes) Arguably the most popular and celebrated motion picture about ... both acclaimed motion pictures. Another seasoned actor, Michael Keaton, also has acted in two films about the newspaper ...
https://en.wikipedia.org/wiki/Journalism_in_American_film_and_television
An Essay Concerning Human UnderstandingAn Essay Concerning Human Understanding
This book focuses on knowledge in general-that it can be thought of as the sum of ideas and perceptions. Locke discusses the ... Locke also distinguishes between the truly existing primary qualities of bodies, like shape, motion and the arrangement of ... "the perception of the operations of our own mind within us, as it is employed about the ideas it has got." In Book II, Locke ... is only the Perception of the Agreement or Disagreement of our own Ideas: but who knows what those Ideas may be?… But of what ...
https://en.wikipedia.org/wiki/An_Essay_Concerning_Human_Understanding
Loida Garcia-FeboLoida Garcia-Febo
"Worldwide Perceptions of New Librarians." In Wolf-Fritz Riekert and Ingeborg Simon (Eds.), Information in e-motion Proceedings ...
https://en.wikipedia.org/wiki/Loida_Garcia-Febo
Duke Thomas (character)Duke Thomas (character)
... and react to attacks faster than normally possible by slowing down his perception. He can even slow his perception down enough ... While in motion on his path, everything around him appears to stand still. Healing Factor: Gnomon, Duke's biological father, ... Cosmic perception: Duke's vision can expand to perceive the entirety of, and even beyond, the known electromagnetic spectrum. ...
https://en.wikipedia.org/wiki/Duke_Thomas_(character)
Parametric determinismParametric determinism
Perceptions of what people can change or act upon may vary a great deal, they might overestimate it, or underestimate it. Thus ... Thus, once "a train of events has been set in motion", it will foreclose other possibilities, and also it might open up some ... And all perceptions of "history-making" may inescapably involve ideology, thus-according to skeptics-casting some doubt on the ... However, Mandel argued that this skepticism is itself based on perceptions of what people are able to know about their ...
https://en.wikipedia.org/wiki/Parametric_determinism
Migrant workerMigrant worker
All of these workers are exposed to fast paces, and repetitive motions at work which can easily lead to injury. In the domestic ... No 11 doi: 10.1136/oem.2008.040907 (Rosales 4) Rosales, Monica S. "Life in the Field: Migrant Farm Workers' Perceptions of Work ...
https://en.wikipedia.org/wiki/Migrant_worker
Ant-Man and the WaspAnt-Man and the Wasp
Produced by Marvel Studios and distributed by Walt Disney Studios Motion Pictures, it is the sequel to Ant-Man (2015) and the ... Perception NYC, Digital Domain, and The Third Floor. DNEG worked on over 500 shots, including the effects for Ghost-which were ... "Ant-Man and the Wasp Press Kit" (PDF). Walt Disney Studios Motion Pictures. Archived (PDF) from the original on November 4, ... Films using motion capture, Films with screenplays by Chris McKenna, Films with screenplays by Erik Sommers, Films with ...
https://en.wikipedia.org/wiki/Ant-Man_and_the_Wasp
Technological determinismTechnological determinism
Kunz, William M. (2006). Culture Conglomerates: Consolidation in the Motion Picture and Television Industries. Publisher: ... Benjamin Lee Whorf argues that language shapes our perception of thinking (linguistic determinism). For McLuhan, media is a ...
https://en.wikipedia.org/wiki/Technological_determinism
List of Metal Gear charactersList of Metal Gear characters
Dutch model Stefanie Joosten provides Quiet's likeness, motion capture and voice. Code Talker (コードトーカー, Kōdo Tōkā) is a Navajo ... As the game progresses, Naomi realizes that some of her original perceptions of Snake were wrong and is later remorseful for ...
https://en.wikipedia.org/wiki/List_of_Metal_Gear_characters
Annabeth RosenAnnabeth Rosen
Critics often note its disruption and displacement of perception, with shifts between detail and whole and micro- and macro- ... on a steel armature and evoked both water in motion and a posed odalisque. Rosen's exhibition, "Tie Me to the Mast" (P.P.O.W., ... "Second Generation: Bay Area Artists," Ceramic Art and Perception, March 2005, p. 10-17. Brown, Glenn R. "Locus of a ... Brown, Glen R. "Annabeth Rosen: Between Drawing and Sculpture," Ceramics: Art & Perception, June 2008. Hammel, Lisa. "Out of ...
https://en.wikipedia.org/wiki/Annabeth_Rosen
Video mattingVideo matting
Currently there exists one major video matting online benchmark, which uses chroma keying and stop motion for ground truth ... As objective metrics do not represent human perception of quality, a subjective survey is necessary to provide adequate ...
https://en.wikipedia.org/wiki/Video_matting
Physics (Aristotle)Physics (Aristotle)
Motion is intrinsically indeterminate, but perceptually determinable, with respect to its length. Acts of perception function ... For Aristotle, the motion of natural things is determined from within them, while in the modern empirical sciences, motion is ... Eternity of motion is also confirmed by the existence of a substance which is different from all the others in lacking matter; ... Aristotle's definition of motion, meaning any sort of a change, a technical concept from the Theory of Matter and Form, is ...
https://en.wikipedia.org/wiki/Physics_(Aristotle)
Mansion taxMansion tax
The motion called for "an annual mansion tax on the excess value of residential properties over £2 million as a first step ... There are perceptions that the high cost of housing in London is in part due to a disproportionate amount of residential ...
https://en.wikipedia.org/wiki/Mansion_tax
MennonitesMennonites
"Motion Pictures and Amish, Hutterites, and Mennonites". Global Anabaptist Mennonite Encyclopedia Online. Retrieved November 26 ... while others have begun to challenge that perception. Discussion also exists as to the term "ethnic Mennonite"; conservative ...
https://en.wikipedia.org/wiki/Mennonites
Motion silencing illusionMotion silencing illusion
Motion perception Motion sensing in vision Visual perception Optical illusion Change blindness Visual cortex Suchow, Jordan W ... There is evidence that global motion factors into motion induced silencing also. Global motion is the movement of the entire ... Choi, L. K.; Bovik, A. C.; Cormack, L. K. (2014). "Spatiotemporal flicker detector model of motion silencing". Perception. 43 ( ... to integrate motion patterns of individual dots into coherent global motion to the extent that it hinders the perception of the ...
https://en.wikipedia.org/wiki/Motion_silencing_illusion
Kino-EyeKino-Eye
Now and forever, I free myself from human immobility, I am in constant motion, I draw near, then away from objects, I crawl ... My path leads to the creation of a fresh perception of the world. I decipher in a new way a world unknown to you." Kino-Eye was ... Kino-Eye hoped to activate a new type of perception by creating "a new filmic, i.e., media shaped, reality and a message or an ...
https://en.wikipedia.org/wiki/Kino-Eye
Depth perceptionDepth perception
Swanston, M.C.; Gogel, W.C. (1986). "Perceived size and motion in depth from optical expansion". Perception & Psychophysics. 39 ... Depth perception is the ability to perceive distance to objects in the world using the visual system and visual perception. It ... Motion parallax When an observer moves, the apparent relative motion of several stationary objects against a background gives ... Monocular Giants What is Binocular (Two-eyed) Depth Perception? Why Some People Can't See in Depth Space perception , Webvision ...
https://en.wikipedia.org/wiki/Depth_perception
Sensory designSensory design
... aims to establish an overall diagnosis of the sensory perceptions of a product, and define appropriate means to ... Classical the field of tribology has developed various tests to evaluate interacting surfaces in relative motion with a focus ... The researches conclude that the perception of food and vestibular system is in the result of the different stress levels ... Sensory assessment aims to quantify and describe, in a systematic manner, all human perceptions when confronted with a product ...
https://en.wikipedia.org/wiki/Sensory_design
Spontaneous trait inferenceSpontaneous trait inference
This perception contributes to the overall impression the individual will have on the person, and in turn contribute to the ... and it is the earth that is in motion. This example shows that the mental mechanism that comes to this conclusion has an ... He first formed this concept to describe human perception of optical illusions, and then in his third volume of "The Treatise ... In the third volume of "The Treatise on Physiological Optics", he explores the impact that visual perception has on the ...
https://en.wikipedia.org/wiki/Spontaneous_trait_inference
Zodiac (film)Zodiac (film)
Plus, so much time had passed, memories are affected and the different telling of the stories would change perception. So when ... "Category List - Best Motion Picture , Edgars Database". Edgars Database. Archived from the original on April 11, 2020. ... Traditional high-speed film cameras were used for slow-motion murder sequences. Michael Mann's Miami Vice, as well as his ... with traditional high-speed film cameras used for slow-motion murder sequences. Zodiac was released by Paramount Pictures in ...
https://en.wikipedia.org/wiki/Zodiac_(film)
Cortical Correlates of Human Motion Perception Biases | Journal of NeuroscienceCortical Correlates of Human Motion Perception Biases | Journal of Neuroscience
1994) Transparent motion perception as detection of unbalanced motion signals. II. Physiology. J Neurosci 14:7367-7380, pmid: ... Human perception, in particular motion perception, is known to display consistent biases that are readily apparent when sensory ... Representation of priors for visual perception. Our results suggest that motion perception biases are encoded very early in ... matching perception. These findings thus offer a resolution to the disconnect between cortical responses and motion perception ...
https://www.jneurosci.org/content/34/7/2592
PDF) Keyframe animation and motion capture for creating animation: a survey and perception from industry peoplePDF) Keyframe animation and motion capture for creating animation: a survey and perception from industry people
Keyframe animation and motion capture for creating animation: a survey and perception from industry people. *September 2003 ... Capturing traditional dance motion data using motion capture technology is too expensive as it required a lot of high-priced ... It is also hard to find any traditional dance motion data from any open sources as the motion data always being made private ... We begin with a discussion of the use of motion capture to create motion for animation, and look at the alternatives. We then ...
https://www.researchgate.net/publication/4153541_Keyframe_animation_and_motion_capture_for_creating_animation_a_survey_and_perception_from_industry_people
Millisecond Test Library: Motion PerceptionMillisecond Test Library: Motion Perception
Dynamically Adjusted Motion Prediction Task (DAMP) - Ullsperger & Crampon (2003) Random Dot Kinematogram Task (RDK) - Braddick ...
https://www.millisecond.com/download/library/categories/motionperception/
Modelling cortical activity underlying apparent and real motion perception - ResultatModelling cortical activity underlying apparent and real motion perception - Resultat
Meyer, J, Jancke, D & Igel, C 2007, Modelling cortical activity underlying apparent and real motion perception. i K-A Hossman ( ... Meyer, J., Jancke, D., & Igel, C. (2007). Modelling cortical activity underlying apparent and real motion perception. I K-A. ... Modelling cortical activity underlying apparent and real motion perception. Publikation: Bidrag til bog/antologi/rapport › ... title = Modelling cortical activity underlying apparent and real motion perception,. author = J. Meyer and D. Jancke and ...
https://forskning.ku.dk/soeg/result/?pure=da%2Fpublications%2Fmodelling-cortical-activity-underlying-apparent-and-real-motion-perception
Second-order motion perception in peripheral vision: limits of early filteringSecond-order motion perception in peripheral vision: limits of early filtering
These phenomena in second-order motion perception can be explained by a linear model of motion detection with an early spatial ... Second-order motion perception in the peripheral visual field Johannes M. Zanker. J. Opt. Soc. Am. A 14(7) 1385-1392 (1997) ... Second-order motion perception in peripheral vision: limits of early filtering Yi-Zhong Wang, Robert F. Hess, and Curtis L. ... Yi-Zhong Wang, Robert F. Hess, and Curtis L. Baker, "Second-order motion perception in peripheral vision: limits of early ...
https://opg.optica.org/josaa/abstract.cfm?uri=josaa-14-12-3145
Eye Movements in Darkness Modulate Self-Motion Perception | eNeuroEye Movements in Darkness Modulate Self-Motion Perception | eNeuro
As self-motion perception drives this update, the effects of eye movements on self-motion perception should also influence the ... Kitazaki M, Sato T (2003) Attentional modulation of self-motion perception. Perception 32:475-484. pmid:12785485. ... Dyde RT, Harris LR (2008) The influence of retinal and extra-retinal motion cues on perceived object motion during self-motion ... If these movements were used to augment self-motion perception, then the perception of such translations would be overestimated ...
https://www.eneuro.org/content/4/1/ENEURO.0211-16.2016
Food and paper: Perception, motion and coordination in animal groups (James Herbert-Read) - RITMO Centre for...Food and paper: Perception, motion and coordination in animal groups (James Herbert-Read) - RITMO Centre for...
Food and paper: Perception, motion and coordination in animal groups (James Herbert-Read) This weeks Food & Paper will be ... RITMO Centre for Interdisciplinary Studies in Rhythm, Time and Motion Visiting address. Forskningsveien 3A (map). 0373 OSLO. ... given by James Herbert-Read (Cambridge University) on perception, motion and coordination in animal groups. ... allowing us to explore the relationship between movement and perception, and test how different forms of environmental visual ...
https://www.uio.no/ritmo/english/news-and-events/events/food-and-paper/2022/herbertread/
Perception and Motion in Real and Virtual Environments: A Narrative Review of Autism Spectrum Disorders<...
Perception and Motion in Real and Virtual Environments: A Narrative Review of Autism Spectrum Disorders. In: Frontiers in ... Perception and Motion in Real and Virtual Environments: A Narrative Review of Autism Spectrum Disorders. / Valori, Irene; ... Perception and Motion in Real and Virtual Environments: A Narrative Review of Autism Spectrum Disorders. Copyright 2021 the ... Valori I, McKenna-Plumley PE, Bayramova R, Farroni T. Perception and Motion in Real and Virtual Environments: A Narrative ...
https://pure.qub.ac.uk/en/publications/perception-and-motion-in-real-and-virtual-environments-a-narrativ
KAKEN - Research Projects | Visual-vestibular interaction in self-motion perception and postural control (KAKENHI-PROJECT...KAKEN - Research Projects | Visual-vestibular interaction in self-motion perception and postural control (KAKENHI-PROJECT...
Visual-vestibular interaction in self-motion perception and postural control. Research Project ... Presentation] Development of visual control of posture in sensitivity function of motion frequency2007. *. Author(s). Kitazaki ... Presentation] Development of visual control of posture in sensitivity function of motion frequency2007. *. Author(s). Kitazaki ... Presentation] Frequency-phase analysis of postural sway induced by visual motion and galvanic vestibular stimulation2008. *. ...
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-19730460/
Development of dorsal stream functioning in biological and structure-from-motion perception in 5-7 year old children - Zurich...Development of dorsal stream functioning in biological and structure-from-motion perception in 5-7 year old children - Zurich...
Development of dorsal stream functioning in biological and structure-from-motion perception in 5-7 year old children ... Development of dorsal stream functioning in biological and structure-from-motion perception in 5-7 year old children. 2008, ...
https://www.zora.uzh.ch/id/eprint/8964/
Modelling Human Motion Perception I. Classical Stimuli<...Modelling Human Motion Perception I. Classical Stimuli<...
Modelling Human Motion Perception I. Classical Stimuli. / Zanker, J. M.. In: Naturwissenschaften, Vol. 81, 1994, p. 156-163.. ... Zanker, J. M. / Modelling Human Motion Perception I. Classical Stimuli. In: Naturwissenschaften. 1994 ; Vol. 81. pp. 156-163. ... Zanker, J. M. (1994). Modelling Human Motion Perception I. Classical Stimuli. Naturwissenschaften, 81, 156-163. ... Zanker, JM 1994, Modelling Human Motion Perception I. Classical Stimuli, Naturwissenschaften, vol. 81, pp. 156-163. ...
https://pure.royalholloway.ac.uk/en/publications/modelling-human-motion-perception-i-classical-stimuli
1808.07692v1] A Directionally Selective Neural Network with Separated ON and OFF Pathways for Translational Motion Perception...1808.07692v1] A Directionally Selective Neural Network with Separated ON and OFF Pathways for Translational Motion Perception...
Title:A Directionally Selective Neural Network with Separated ON and OFF Pathways for Translational Motion Perception in a ... like the elementary motion detectors. First, we thoroughly mimic the flys preliminary motion-detecting pathways with newly ... Moreover, we alleviate the impact of irrelevant motion in a visually cluttered environment like the shifting of background and ... In this research, we highlight the functionality of ON and OFF pathways, separating motion information for parallel computation ...
https://arxiv.org/abs/1808.07692v1
Science in motion: A qualitative analysis of journalists use and perception of preprints - preLightsScience in motion: A qualitative analysis of journalists' use and perception of preprints - preLights
Science in motion: A qualitative analysis of journalists use and perception of preprints. Alice Fleerackers, Laura Moorhead, ...
https://prelights.biologists.com/highlights/science-in-motion-a-qualitative-analysis-of-journalists-use-and-perception-of-preprints/
Perception of biological motion and emotion in mild cognitive impairment and dementia<...Perception of biological motion and emotion in mild cognitive impairment and dementia<...
Perception of biological motion and emotion in mild cognitive impairment and dementia. / Henry, J. D.; Thompson, C.; Rendell, P ... Perception of biological motion and emotion in mild cognitive impairment and dementia. In: Journal of the International ... Perception of biological motion and emotion in mild cognitive impairment and dementia. Journal of the International ... Henry, JD, Thompson, C, Rendell, PG, Phillips, LH, Carbert, J, Sachdev, P & Brodaty, H 2012, Perception of biological motion ...
https://abdn.pure.elsevier.com/en/publications/perception-of-biological-motion-and-emotion-in-mild-cognitive-imp
Effects of synchronous motion and spatial alignment on animacy perception<...
Effects of synchronous motion and spatial alignment on animacy perception. / Takahashi, Kohske; Watanabe, Katsumi. ... Effects of synchronous motion and spatial alignment on animacy perception. In 2016 8th International Conference on Knowledge ... Effects of synchronous motion and spatial alignment on animacy perception. 2016 8th International Conference on Knowledge and ... Takahashi, K., & Watanabe, K. (2016). Effects of synchronous motion and spatial alignment on animacy perception. In 2016 8th ...
https://waseda.pure.elsevier.com/en/publications/effects-of-synchronous-motion-and-spatial-alignment-on-animacy-pe
NMX Stepper Motion Controller - Dynamic PerceptionNMX Stepper Motion Controller - Dynamic Perception
Using Bulb Ramping devices or shooting Stop Motion with the NMX * NMX API, Stand alone command line and Detailed Command ...
https://support.dynamicperception.com/hc/en-us/sections/200559989-NMX-Stepper-Motion-Controller
Gait asymmetry during early split-belt walking is related to perception of belt speed differenceGait asymmetry during early split-belt walking is related to perception of belt speed difference
... J Neurophysiol. 2015 Sep;114(3 ... limb excursion asymmetry when using their perception of belt speed differences in the early phase of adaptation to split-belt ...
https://pubmed.ncbi.nlm.nih.gov/26203114/?dopt=Abstract
Default perception of high-speed motion<...
title = "Default perception of high-speed motion",. abstract = "When human observers are exposed to even slight motion signals ... namely the minimal-motion principle and the breakdown of coherent motion perception with steps above an upper limit called dmax ... namely the minimal-motion principle and the breakdown of coherent motion perception with steps above an upper limit called dmax ... namely the minimal-motion principle and the breakdown of coherent motion perception with steps above an upper limit called dmax ...
https://kyushu-u.pure.elsevier.com/en/publications/default-perception-of-high-speed-motion
Lighting Beyond Senses :: Perception and Motion - LICHTCAMPUS WismarLighting Beyond Senses :: Perception and Motion - LICHTCAMPUS Wismar
Lighting Beyond Senses :: Perception and Motion. Veronika Mayerböck. _ My workshop is dedicated to the relationship between ... Light as a medium of design accompanies our perception of space, it stages glances and guides the viewer, illustrates, makes ...
https://2019.lichtcampus.net/perception-and-motion/
Extra-retinal cues and motion-in-depth perception :: MPG.PuReExtra-retinal cues and motion-in-depth perception :: MPG.PuRe
Extra-retinal cues and motion-in-depth perception ... Extra-retinal cues and motion-in-depth perception Welchman, A ... Harris, J., & Brenner, E. (2003). Extra-retinal cues and motion-in-depth perception. In AVA Annual Meeting Vision in a 3-D ... This complicates the relationship between an objects motion and the binocular retinal projection of its motion. To perceive ... We measured motion-in-depth discrimination thresholds when the eyes were moving or stationary. To get the eyes moving without ...
https://pure.mpg.de/pubman/faces/ViewItemFullPage.jsp?itemId=item_1792499
Ocasys: Toon vak Perception for Visual ComputingOcasys: Toon vak Perception for Visual Computing
Stereo and depth perception. • Motion and temporal perception. • Visual masking and crowding. • Eye movements. • Applications ... Importance of perception, image formation on the retina. • Luminance and color perception. • Psychovisual experiment protocols ... Perception for Visual Computing. Leerdoelen. At the end of the course, the student is able to:. 1) explain the fundamental ... perception and write a short paper on the problem. In the second part of the course, the students are expected to implement ...
https://www.rug.nl/ocasys/feb/vak/show?code=WMCS029-05
Neural model of transfer-of-binding in visual relative motion perception. - Cogprints
Neural model of transfer-of-binding in visual relative motion perception. [Preprint] ...
https://web-archive.southampton.ac.uk/cogprints.org/436/index.html
Depth perception and motion cue based 3D video quality assessment<...Depth perception and motion cue based 3D video quality assessment<...
"Depth perception and motion cue based 3D video quality assessment",. abstract = "In this paper, we propose a depth perception ... we propose a depth perception and motion cue based three-dimensional (3D) video quality assessment (VQA). Depth perception ... we propose a depth perception and motion cue based three-dimensional (3D) video quality assessment (VQA). Depth perception ... we propose a depth perception and motion cue based three-dimensional (3D) video quality assessment (VQA). Depth perception ...
https://yonsei.pure.elsevier.com/en/publications/depth-perception-and-motion-cue-based-3d-video-quality-assessment
21.11.2019 Prof. Dr. Mark Greenlee - Universität Ulm21.11.2019 Prof. Dr. Mark Greenlee - Universität Ulm
Multisensory Perception of Self Motion: Psychophysics and Functional Neuroanatomy. Prof. Dr. Mark Greenlee (University of ... on direction discrimination of optic-flow fields and on the corresponding neuronal correlates of the self-motion perception. We ... In addition, we have a vestibular organ, which informs us about self motion and thus contributes to maintaining balance and ... Finally, the suppression of the vestibular cortex has been examined during the processing of visual motion. When attention is ...
https://www.uni-ulm.de/in/fakultaet/forschung/kognitive-systeme/colloquium-cognitive-systems-201920/21112019-prof-dr-mark-greenlee/
Art and Visual Perception by Rudolf Arnheim | Film Forever Motion Picture Editorial & Film Supplies
Film Forever Motion Picture Editorial & Film Supplies. 70mm - 35mm - 16mm - Super 8mm - Regular 8mm Film Supplies, Film ... Art and Visual Perception - A Psychology of the Creative Eye by Rudolf Arnheim. $5.95 ... Art and Visual Perception - A Psychology of the Creative Eye by Rudolf Arnheim. ... Art and Visual Perception - A Psychology of the Creative Eye by Rudolf Arnheim ...
https://filmforevermpe.com/products/art-and-art-and-visual-perception-a-psychology-of-the-creative-eye-by-rudolf-arnheim
Motion-driven enhancement of a lower region cue in depth perception | Journal of Illusion Motion-driven enhancement of a lower region cue in depth perception | Journal of Illusion
JOI defines an illusion as the perception of an object or phenomenon that is considered to be inconsistent with individuals or ... groups prior knowledge, recognition, or belief as to what the object or phenomenon should be in perception, cognition, and/or ...
https://journalofillusion.net/index.php/joi/article/view/8028/14509
Background Motion, Clutter, and the Impact on Virtual Object Motion Perception in Augmented RealityBackground Motion, Clutter, and the Impact on Virtual Object Motion Perception in Augmented Reality
... ... title = {{Background Motion, Clutter, and the Impact on Virtual Object Motion Perception in Augmented Reality}},. author = { ... virtual object motion perception and gives new insights into the impact that background clutter and motion has on perception in ... can have on the perception of virtual object motion in augmented reality. To investigate these issues, we conducted an ...
https://diglib.cgv.tugraz.at/handle/10.2312/EGVE.JVRC13.057-064
PeoplePeople
Motion comfort, human perception, postural stability, human body modelling, seat design, vehicle control. ... Motion Planning, Multi-robot Systems, Robot Autonomy, Intelligent Transportation, Learning for Coordination and Planning ... Multi-sensor Perception, Machine Learning, Self-driving vehicles, Situation analysis and Prediction, Probabilistic inference, ...
https://www.tudelft.nl/3me/over/afdelingen/cognitive-robotics-cor/people
Highlight Photo: What do we see in each other: How the perception of motion drives social interaction
What do we see in each other: How the perception of motion drives social interaction. Proposed alignment of the kinesthetic ... Proposed alignment of the kinesthetic sense of our own movements with our visual perception of biological motion produced by ... sense of our own movements with our visual perception of biological motion produced by others.. ...
http://media.igert.org/highlights/634/image/1765.html
Barccsyn 2022 Poster Sessions 1 - Centre de Recerca MatemàticaBarccsyn 2022 Poster Sessions 1 - Centre de Recerca Matemàtica
Neural network dynamics underlying biased perception in motion discrimination tasks. Miguel Donderis , Centre de Recerca ... Neural network dynamics underlying biased perception in motion discrimination tasks - Miguel Donderis. ... Perception is influenced by past choices. In fine discrimination tasks, a categorical choice biases perceptual reports about ... the direction of motion away from the decision boundary. This bias has been explained using neural encoding-decoding models1 ...
https://www.crm.cat/barccsyn-2022-poster-sessions-1/
Self-motion perceptionStimuliVestibular2018VisualPsychophysicsSensory perceptionHumansInduced motion sicknessStimulusCuesNeuroscienceBehaviorCorticalPerceptualParticipantsQualitativeSusceptible to motion sicknessBiologicalPredictionMovements2020SpatiallyThresholdsCognitionCaptureResponsesBrainTrajectorySensesVisuallyCorrelatesHumanLight and motionNeuralExpectationsColor perceptionDepthSuggestsSignalsFacialRetinalPerceive largeSusceptibilityBiasesSensationsProfoundOccursObserversMechanismIllusionsSigns and symptomsVelocityCoordinationStudy
Self-motion perception10
  • We conclude that eye-movement signals influence self-motion perception, even in the absence of visual stimulation. (eneuro.org)
  • We show that eye-movement signals, even in complete darkness, influence self-motion perception. (eneuro.org)
  • a direct influence of eye movements on self-motion perception has not been tested. (eneuro.org)
  • To test whether eye movements are used in self-motion perception, we used a two-alternative forced choice (2-AFC) paradigm in which participants were presented with two consecutive lateral translations. (eneuro.org)
  • We combined caloric vestibular stimulation with visual stimulation to analyze the interaction between the visual and vestibular sensory systems in self-motion perception. (uni-ulm.de)
  • For this purpose, congruent and non-congruent visual-vestibular stimulus combinations are used to investigate their influence on the perception of self motion, on direction discrimination of optic-flow fields and on the corresponding neuronal correlates of the self-motion perception. (uni-ulm.de)
  • The results of these investigations provide new insights into the multisensory integration of visual and vestibular information in self-motion perception. (uni-ulm.de)
  • Virtual heights to improve self-motion perception and fear of falling in older fallers" funded by Foundation for Physical Therapy Research, Inc. (rochester.edu)
  • This project will increase our understanding of balance ability, and evaluate the impact of a novel high height virtual reality (VR) balance training intervention on fear of falling and self-motion perception. (rochester.edu)
  • This project will develop novel approaches to rehabilitation, specifically addressing the need for a deeper understanding of self-motion perception and how self-motion perception can be adapted. (rochester.edu)
Stimuli8
  • Zanker, JM 1994, ' Modelling Human Motion Perception I. Classical Stimuli ', Naturwissenschaften , vol. 81, pp. 156-163. (royalholloway.ac.uk)
  • The absence of any MCI related impairment on the point-light biological emotion measure (coupled with deficits on the measure of facial affect recognition) also point to a potential disconnect between the processes implicated in the perception of emotion cues from static versus dynamic stimuli. (elsevier.com)
  • When human observers are exposed to even slight motion signals followed by brief visual transients-stimuli containing no detectable coherent motion signals-they perceive large and salient illusory jumps. (elsevier.com)
  • In summary, across a large variety of stimuli, we find that when incoherent motion noise is preceded by a small bias, instead of perceiving little or no motion-as suggested by the minimal-motion principle-observers perceive jumps whose amplitude closely follows their own d max limits. (elsevier.com)
  • Nearly all individuals experience it if exposed to enough motion stimuli. (medscape.com)
  • Motion sickness most likley occurs when the stimuli applied to these receptors appear to be in conflict. (medscape.com)
  • Nearly all people experience motion sickness if given a strong enough motion stimuli. (medscape.com)
  • Psychophysics quantitatively investigates the relationship between physical stimuli and the sensations and perception they produce. (kattrahill.com)
Vestibular11
  • The brain can integrate the eye-movement cue with vestibular and other sensory cues to derive a weighted estimate of self-motion. (eneuro.org)
  • If so, self-motion with body-fixed gaze should be underestimated compared with self-motion with a world-fixed gaze, despite identical vestibular cues. (eneuro.org)
  • In addition, if oculomotor signals are always integrated with vestibular signals to estimate self-motion, the effects of eye movements should be observable even during movement in complete darkness. (eneuro.org)
  • In addition, we have a vestibular organ, which informs us about self motion and thus contributes to maintaining balance and posture. (uni-ulm.de)
  • Finally, the suppression of the vestibular cortex has been examined during the processing of visual motion. (uni-ulm.de)
  • The organs of balance are at the basis of our vestibular system, playing a major role in motion and orientation perception, and the control of our body, head and eye movements. (tno.nl)
  • The brain estimates motion based on the combined input from vestibular, visual, and proprioceptive receptors. (medscape.com)
  • Given sufficient stimulus, all people with functional vestibular systems can develop motion sickness. (cdc.gov)
  • People with a history of migraines, vertigo, and vestibular disorders are more prone to motion sickness. (cdc.gov)
  • Sensory conflict theory (the most widely accepted explanation for motion sickness) proposes that the condition is caused by conflict between the visual, vestibular, and somatosensory systems, and involves complex neurophysiologic signaling between multiple nuclear regions, neurotransmitters, and receptors. (cdc.gov)
  • Paralysis in this context is not only advantageous for eliminating motion artifacts during imaging, it also abolishes all vestibular, proprioceptive and mechanosensory neural feedback that a behaving animal-be it tethered or untethered-usually receives. (cdc.gov)
20181
  • I joined the School of Psychology at the University of Leicester in 2018, soon after completing my PhD in Psychology (Visual Perception) at Sheffield Hallam University. (le.ac.uk)
Visual34
  • Decoding, voxel population, and forward-encoding analyses revealed biases toward slow speeds and high temporal frequencies at low contrast in the earliest visual cortical regions, matching perception. (jneurosci.org)
  • We measured speed and temporal frequency-selective responses using fMRI and found that, at low contrast, the representation in all cortical visual areas studied shifted toward slow speeds and faster temporal frequencies, matching perception rather than the pure sensory evidence. (jneurosci.org)
  • Any early linear spatial filtering process in the visual system that attenuates one sideband more than the other will be detrimental to the balance between the two sidebands, so that the perceived direction of the carrier might be opposite to that of the envelope motion. (optica.org)
  • I will show how augmented-reality (AR) environments can be used to test the visual perceptual abilities of freely moving animals, allowing us to explore the relationship between movement and perception, and test how different forms of environmental visual noise interfere with information gathering. (uio.no)
  • However, this did not reflect a specific deficit in decoding emotions, but instead a more generalized difficulty in processing visual motion (both to action and to emotion). (elsevier.com)
  • These results align with earlier studies showing that visual motion processing is disrupted in dementia, but additionally show for the first time that this extends to the recognition of socially relevant biological motion. (elsevier.com)
  • 3) explain how existing methods in visual computing improve perceived quality or decrease computational costs by using computational models of the visual perception. (rug.nl)
  • 4) implement and use computational models of visual perception. (rug.nl)
  • 5) formulate a solution to a relevant selected research problem in visual computing using the models of visual perception. (rug.nl)
  • The first part focuses on the existing literature on human visual perception with reading assignments and in-class discussion. (rug.nl)
  • During the first part, the students are expected to choose a relevant problem (to be agreed with the lecturer) in visual computing that they want to apply their gained knowledge of perception and write a short paper on the problem. (rug.nl)
  • Neural model of transfer-of-binding in visual relative motion perception. (southampton.ac.uk)
  • Depth perception provides the real 3D impression during viewing the 3D video (3DV), and motion cue is also important factor to simulate a Human Visual Systems (HVS) for 3DV. (elsevier.com)
  • Background motion and visual clutter are present in almost all augmented reality applications. (tugraz.at)
  • Proposed alignment of the kinesthetic sense of our own movements with our visual perception of biological motion produced by others. (igert.org)
  • Yang CY, Hsieh JC, Chang Y. An MEG study into the visual perception of apparent motion in depth. (ym.edu.tw)
  • The FACADE model, and its laminar cortical realization and extension in the 3D LAMINART model, have explained, simulated, and predicted many perceptual and neurobiological data about how the visual cortex carries out 3D vision and figure-ground perception, and how these cortical mechanisms enable 2D pictures to generate 3D percepts of occluding and occluded objects. (frontiersin.org)
  • My research area is visual perception with a focus on trajectory perception and visual illusions. (le.ac.uk)
  • Visual perception - motion trajectory, illusory trajectories, and visual preference. (le.ac.uk)
  • I'm also interested in how visual perception can be altered in various clinical conditions, for example strabismus (often known as squint in the UK) and epilepsy. (ncl.ac.uk)
  • Visual motion and the human brain: What has neuroimaging told us? (umn.edu)
  • The dorsal visual processing stream that includes V1, motion sensitive area V5 and the posterior parietal lobe, supports visually guided motor function. (uwaterloo.ca)
  • On visual motion perception and action control. (mpg.de)
  • The influence of visual motion perception on action control. (mpg.de)
  • This can be said of every other type of visual representation, however, but unique to photography is the transformed perception of the medium. (smarthistory.org)
  • To work with visuals and motion, you need to understand how visual perception functions, for the same reason that sound design is informed by understandings of how our hearing perceives space, frequency, timbre, and the like. (cdm.link)
  • Perhaps, just as students of sound and music have immersed themselves in understanding of psychoacoustics and musical theory, visualists could use a deeper knowledge of visual perception. (cdm.link)
  • Upon landing on the Moon, the Apollo astronauts encountered an environment where the visual-sensory cues used for depth and distance perception on Earth were no longer reliable. (kattrahill.com)
  • My question, Is it just visual perception or special mechanism for detection of acceleration ? (dualjuridik.org)
  • Motion blur and the speed at which the perception of objects change size are large contributors to our sense of visual acceleration, but almost all of this is done via complex manipulation of visual data in the occipital and frontal lobes. (dualjuridik.org)
  • A range of techniques targets the two, which dominate our perception: auditory and visual. (spiritsciencecentral.com)
  • This talk will focus on the impact of the fixational motion of the retinal image on the statistics of visual input and on the neural encoding of visual information. (rutgers.edu)
  • This theory posits motor contributions to early visual representations and suggests that perception and behavior are more intimately tied than commonly thought. (rutgers.edu)
  • Whether your patients are adults with head injuries or stroke survivors with visual perception problems, you'll transform your practice with innovative interventions that help patients adapt to visual impairments, take charge of their recovery, and resume functional activities they might have otherwise abandoned. (pesi.com)
Psychophysics3
  • Perception and Psychophysics. (umn.edu)
  • Perception & Psychophysics, 31(5), 502-505. (bvsalud.org)
  • The study of psychophysics has widespread and important practical applications for understanding human sensory perception. (kattrahill.com)
Sensory perception2
  • Human sensory perception is not a faithful reproduction of the sensory environment. (jneurosci.org)
  • The telencephalon ultimately develops into several critical structures, including the the largest part of the brain (the cerebrum), which controls most voluntary activity, language, sensory perception, learning, and memory. (medlineplus.gov)
Humans5
  • These findings thus offer a resolution to the disconnect between cortical responses and motion perception in humans. (jneurosci.org)
  • During self-motion, humans typically move the eyes to maintain fixation on the stationary environment around them. (eneuro.org)
  • Our data support the hypothesis that humans aim to minimize (temporal) limping rather than (spatial) limb excursion asymmetry when using their perception of belt speed differences in the early phase of adaptation to split-belt walking. (nih.gov)
  • I am interested in the neuronal basis of perception, particularly in stereo "3D" vision in both humans and praying mantises. (ncl.ac.uk)
  • Robots with soft actuators that cannot harm humans, on the other hand, are tethered by pneumatic hoses and so their radius of motion is restricted. (mpg.de)
Induced motion sickness1
  • Keshavarz B, Stelzmann D, Paillard A, Hecht H. Visually induced motion sickness can be alleviated by pleasant odors. (medscape.com)
Stimulus5
  • Spatial and temporal analysis of contrast-modulated sine-wave gratings reveals that the second-order motion stimulus contains two sidebands, with equal energy but moving in opposite directions, flanking a stationary carrier. (optica.org)
  • We found that when the envelope frequency was close to that of the carrier, a second-order stimulus whose envelope motion direction was correctly identified in the fovea appeared to drift in the opposite direction in the periphery. (optica.org)
  • Subliminal perception occurs when a stimulus creates san imprint on this innermost layer of your awareness. (spiritsciencecentral.com)
  • Under natural viewing conditions, the main source of motion of the stimulus on the retina is not the scene but our own behavior. (rutgers.edu)
  • According to this theory, the fluctuations of luminance caused by the incessant motion of the eye equalize the power present at different spatial frequencies in the spatiotemporal stimulus on the retina. (rutgers.edu)
Cues3
  • The dementia (but not the MCI) group additionally showed difficulties interpreting biological motion cues. (elsevier.com)
  • Invest Opthal Vis Sci, 1986, p.584-597) thus suggesting that extra-retinal cues are not used to perceive motion-in-depth. (mpg.de)
  • This suggests that, in contrast to previous reports, observers can use extra-retinal cues to make accurate motion-in-depth discriminations. (mpg.de)
Neuroscience1
  • Perception and motor control are often regarded as two separate branches of neuroscience. (rutgers.edu)
Behavior1
  • Sensation & Perception does a great job linking neurophysiology to behavior and perceptions. (oup.com)
Cortical3
  • Although these biases have been observed robustly, their neural underpinning is unknown, thus suggesting a possible disconnect of the well established link between motion perception and cortical responses. (jneurosci.org)
  • Motion perception ( Burr and Thompson, 2011 ) is a canonical domain of sensory decision-making for which the evidence linking perception to cortical responses has been firmly established ( Parker and Newsome, 1998 ). (jneurosci.org)
  • We hypothesized that an examination at the scale of neural populations would help to resolve the apparent disconnect between cortical responses and motion perception. (jneurosci.org)
Perceptual2
  • Motion perception biases are also of particular interest because of their possible relationship to normative theories of perceptual inference. (jneurosci.org)
  • This Bayesian view of motion speed perception suggests that weakening sensory evidence by reducing image contrast results in perceptual estimates biased toward a prior for slow speeds. (jneurosci.org)
Participants8
  • We had participants judge self-motion during different eye-movement conditions in the absence of full-field optic flow. (eneuro.org)
  • Participants diagnosed with mild cognitive impairment (MCI), dementia and controls completed measures that required decoding emotions from point-light displays of bodily motion, and static images of facial affect. (elsevier.com)
  • To investigate these issues, we conducted an experiment in which participants' perceptions of changes in overlaid virtual object velocity were tested with several levels of background motion, background clutter, virtual object motion, and virtual object clutter. (tugraz.at)
  • The dataset contains a total of 20 participants' data (half male) of the motion and sensor data, which is collected at a 100 Hz sampling frequency. (bvsalud.org)
  • Motion capture delivers an incredible fusion of dance & immersive technology for multiple participants. (dazzle1919.com)
  • As an answer to our longing for togetherness, audiences choose to be active participants or observers as they travel through mixed realities, breaking with perceptions of art to be spatially separated or untouched by its visitors. (dazzle1919.com)
  • The 2-weeks lead-in phase requires participants to complete weekly questionnaires about their sleep patterns, and record their bowel motion, mood, and perception of sleep quality every day on an app designed for this trial. (who.int)
  • During the eight-week intervention phase, participants will consume two of their assigned tablets each day (with or without water or food), complete their daily bowel motion and mood/sleep app and complete weekly sleep questionnaires and two-weekly mental health questionnaires. (who.int)
Qualitative2
  • This study explored dental students' performance (quantitative data) and perceptions (qualitative data) on canal preparation with Ni-Ti rotary vs. hand instruments and discussed interactions between technical findings and students' insights. (bvsalud.org)
  • Qualitative data (students' perceptions) were collected and perceptions were identified from interview contents using thematic analysis. (bvsalud.org)
Susceptible to motion sickness2
  • Several studies show that females report increased frequency and severity of symptoms and pregnant women are much more susceptible to motion sickness. (medscape.com)
  • 50 years are less susceptible to motion sickness. (cdc.gov)
Biological1
  • Does belief in free will influence biological motion perception? (ugent.be)
Prediction1
  • Berkeley DeepDrive (BDD) and Nexar announced the release of 36,000 high frame-rate videos of driving, in addition to 5,000 pixel-level semantics-segmented labeled images, and invited public and private institution researchers to join the effort to develop accurate automotive perception and motion prediction models. (berkeley.edu)
Movements6
  • These eye movements could in principle be used to estimate self-motion, but their impact on perception is unknown. (eneuro.org)
  • These signals drive perception, but they also drive compensatory eye movements that work to maintain fixation on world-stationary objects. (eneuro.org)
  • Nevertheless, the brain may assume that eye movements are always informative about self-motion, as during the linear vestibulo-ocular reflex (LVOR), leading it to equate the absence of eye movements to a cue indicating the absence of self-motion. (eneuro.org)
  • In particular, unconstrained eye movements induced by the LVOR, which will have magnitudes between body-fixed and world-fixed fixation, should parametrically relate to the perceived self-motion. (eneuro.org)
  • To perceive the motion correctly, the brain must take account of eye movements. (mpg.de)
  • Abnormal or involuntary movements, such as jerking movements of the arms and legs and repeated hand motions, are common, and most affected children do not learn to sit or walk without assistance. (medlineplus.gov)
20201
  • Se realizó una entrevista semiestructurada, por medios virtuales, a través de la aplicación WhatsApp®, en la función de videol amada, de septiembre a noviembre de 2020, luego de captar a las mujeres que fueron dadas de alta de la unidad. (bvsalud.org)
Spatially1
  • Consequently, we found that the reduction of perceived animacy from both spatially aligned as well as spatially misaligned synchronous motion, wherein the magnitudes of animacy reduction were quantitatively comparable. (elsevier.com)
Thresholds1
  • We measured motion-in-depth discrimination thresholds when the eyes were moving or stationary. (mpg.de)
Cognition1
  • JOI defines an illusion as the perception of an object or phenomenon that is considered to be inconsistent with individual's or group's prior knowledge, recognition, or belief as to what the object or phenomenon should be in perception, cognition, and/or physics. (journalofillusion.net)
Capture7
  • With the rapid growth of this industry various types of techniques, methodologies and computer technologies have been developed, for instance keyframe animation, non-linear animation, motion capture, procedural animation and etc. (researchgate.net)
  • This research discusses about producing animation by using two methods: motion capture and keyframe animation. (researchgate.net)
  • Inertial Measurement Unit, as a kind of Multiplex-type human motion capture system, is widely used because of its humanized human-computer interaction design, low energy consumption and more freedom provided by the environment. (bvsalud.org)
  • Perception Neuron Studio motion capture device is used in present. (bvsalud.org)
  • He is also collaborating with Jaibana Studios in South Florida, and more recently with Dispersive Studios in Atlanta (from Candice Alger, creator of the motion Capture technology used in Avatar, LOTR, Ironman Halo and other games & films). (secondtruth.com)
  • Currently, he is representing Reallusion / MobaCap, and a new motion capture hardware Perception Neuron Motion Capture Suit / Axis Neuron Motion Capture software, as the first person in the United States to provide dedicated certified training for the full Perception Neuron pipeline integrating AutoDesk, Reallusion, Unity, Unreal, Oculus, Motion Builder, and others. (secondtruth.com)
  • Currently the Owner / Operator of MobaCap motion capture ON DEMAND, 2D / 3D Animation & Previz production, VR Game Design and Asset Generation. (secondtruth.com)
Responses2
  • Motions and crew responses on an offshore oil production and storage vessel. (medscape.com)
  • Several behavioral features-such as turning responses to whole-field motion and dark avoidance-are well-replicated in this virtual setting. (cdc.gov)
Brain3
  • I construct mathematical models of the neuronal computations which support this process, and carry out detailed measurements of human perceptions in order to test these models and relate them more closely to what is known about brain physiology. (ncl.ac.uk)
  • dans l'ouvrage dirigé par Tamar Flash et Alain Berthoz : « Space-Time Geometries for Motion and Perception in the Brain and the Arts. (ensadlab.fr)
  • The inner and outer hair cells are responsible for transducing the mechanical waves of the basilar membrane into electrical impluses that are transmitted by the spiral ganglion cells to the brain for the perception of sound. (cdc.gov)
Trajectory1
  • Animacy perception, where an obviously non-animate object elicits to us a feeling that the object is animate, is also susceptible to motion trajectory. (elsevier.com)
Senses2
  • New Multisensory Integration sections throughout the text highlight how human senses interact and create a more holistic and realistic picture of perception. (oup.com)
  • To optimize this perception and control, our central nervous system integrates the information from the organs of balance with that of the eyes and other senses, as well as with cognitive information. (tno.nl)
Visually2
  • Moreover, we alleviate the impact of irrelevant motion in a visually cluttered environment like the shifting of background and windblown vegetation, via the modeling of spatiotemporal dynamics. (arxiv.org)
  • This visually striking effect, which we call "high phi," challenges well-entrenched assumptions about the perception of motion, namely the minimal-motion principle and the breakdown of coherent motion perception with steps above an upper limit called dmax. (elsevier.com)
Correlates1
  • This all correlates to my ongoing fascination around our individual perceptions of life. (rowanwhile.com)
Human6
  • Human perception, in particular motion perception, is known to display consistent biases that are readily apparent when sensory evidence is weak. (jneurosci.org)
  • It has been practiced for the last 70 years in both drawn and stop motion animation, and as such, is not an attempt to mimic human and animal life exactly' Traditionally animation is produced by drawing illusion of movement created by photographing a series of individual drawings on successive frames on film. (researchgate.net)
  • Journal of Experimental Psychology: Human Perception and Performance. (umn.edu)
  • Osseointegrated Implant enhances human-prosthesis interaction, perception, and motion capabilities. (myleg.eu)
  • However, there is limited knowledge on how the differential properties of light outside of Earth's atmosphere affects human perception in extraterrestrial lunar environments. (kattrahill.com)
  • More than a hundred years ago, a Delsartean-inspired actor who figured out how to regain voice loss named F.M. Alexander noticed a principle of human nature related to movement perception and gave it a term: "debauched kinesthesia. (wordpress.com)
Light and motion2
  • The actual rates will also depend on factors such as personal light and motion perception, local weather conditions, alertness and experience in watching meteor activity. (meteornews.net)
  • The Vis Micro II Rear Light from Light And Motion provides high-powered visibility in a compact design, proving that a strong light doesn't have to take up a ton of room. (brandscycle.com)
Neural2
  • Thus, understanding the neural basis of motion biases also provides an opportunity to understand the more general question of how putative priors interact with sensory evidence to yield biased percepts. (jneurosci.org)
  • Medications used to prevent and treat motion sickness are thought to work by suppressing the signals that contribute to neural mismatch. (cdc.gov)
Expectations2
  • The artists are considering an interactive work that employs either, 1) peepholes - window portals at multiple heights that toy with people's perceptions, and expectations of, what they will see inside, or 2) motion sensors - motion-activated lighting that creates "an interactive dialogue with the motion of the street. (spaceworkstacoma.com)
  • Ni-Ti rotary instrumentation perceptions were: good initial expectations before its use, perceptions of doubts and difficulties concerning workability right after its first use, and increase in confidence after its second use in a second canal. (bvsalud.org)
Color perception1
  • This distortion in color perception and acuity had an impact on his work where tones became muddier and darker and forms became less distinct. (emory.edu)
Depth10
  • To get the eyes moving without the subject seeing any motion-in-depth we presented the target (a small square) in a plane that contained a large structured background and then varied the simulated depth position of the plane over time without changing retinal size. (mpg.de)
  • Motion-in-depth is imperceptible under these conditions (due to cue conflict) whilst the large scene promotes accurate pursuit. (mpg.de)
  • In this paper, we propose a depth perception and motion cue based three-dimensional (3D) video quality assessment (VQA). (elsevier.com)
  • We combine the depth perception and motion cue, and generate a weighting map for 3D VQA. (elsevier.com)
  • My central research interest is binocular vision and the perception of 3D stereo depth. (ncl.ac.uk)
  • This gives 3D magnification, 10 times magnification, 360 degree rotation, 7 degree of motion, accurate depth perception making surgery a comfortable for the surgeon. (miart.in)
  • With Light and Motion's SafePulse beam pattern, the Vis Micro II maximizes your visibility by enhancing the depth perception of approaching motorists, making it easier to locate and track you as they pass. (brandscycle.com)
  • The lack of an atmosphere, or "exosphere" on the Moon causes dramatic changes in the scattering of light across the lunar surface and limits depth and distance perception of terrain. (kattrahill.com)
  • However, this benefit was often counteracted by deep shadows that limited depth perceptions of slope in low sun elevation. (kattrahill.com)
  • Astronaut Al Bean reported the formation of deep shadows that limited perception of depth and slope in low sun elevation, which caused him to overestimate an 11° slope of Surveyor Crater by almost 30° when it was partially concealed by shadows. (kattrahill.com)
Suggests1
  • The fact that it required only a brief exposure to the drugs to set in motion a months-long regeneration process suggests that frogs and perhaps other animals may have dormant regenerative capabilities that can be triggered into action. (regenerativemedicine.net)
Signals5
  • A linear model indicated that eye-movement signals received a weight of ∼25% for the self-motion percept. (eneuro.org)
  • Multiple sensory signals have been identified to contribute to our estimate of self-motion. (eneuro.org)
  • The associated oculomotor signals could also contribute to self-motion estimates because they are correlated with head displacement. (eneuro.org)
  • Our experiments with transients, such as texture randomization or contrast reversal, show that the magnitude of the jump depends on spatial frequency and transient duration-but not on the speed of the inducing motion signals-and the direction of the jump depends on the duration of the inducer. (elsevier.com)
  • Thus, extra-retinal signals may routinely contribute to our perception of objects moving towards us. (mpg.de)
Facial1
  • Naming emotions in motion:Alexithymic traits impact the perception of implied motion in facial displays of affect. (aston.ac.uk)
Retinal1
  • This complicates the relationship between an object's motion and the binocular retinal projection of its motion. (mpg.de)
Perceive large1
  • Why do we lose the "superior" ability to perceive large objects' motion during development? (labmanager.com)
Susceptibility3
  • Motion sickness susceptibility. (medscape.com)
  • Effects of ginger on motion sickness susceptibility and gastric function. (medscape.com)
  • Quitting (even short-term) reduces susceptibility to motion sickness. (cdc.gov)
Biases2
  • Moreover, biases in speed perception are considered a leading example of Bayesian inference because they can be interpreted as a prior for slow speeds. (jneurosci.org)
  • Livingstone and Conway, 2007 ) of motion perception biases, suggesting a disconnect in this otherwise well established link. (jneurosci.org)
Sensations1
  • We will start with alignment and experiential anatomy in order to deepen in the perception of our physical sensations and internal connections while in stillness or in motion. (contactfestival.ru)
Profound2
  • The results were particularly interesting to me, because the tendency of perception to transform our notions of space and pattern is so profound, it's immediately apparent that the same forces are at work as we look at anything. (cdm.link)
  • As you entered 2023 a more expansive energetic system was linked from our resident Universe to your earth plane setting in motion a series of profound energetic shifts throughout the planet. (ning.com)
Occurs2
  • Motion sickness is an unpleasant condition that occurs when persons are subjected to motion or the perception of motion. (medscape.com)
  • Motion sickness typically occurs after a triggering motion or event. (cdc.gov)
Observers1
  • Observers were able to make fine discriminations of motion direction whether the eyes were initially stationary or moving. (mpg.de)
Mechanism2
  • Holtmann S, Clarke AH, Scherer H, Höhn M. The anti-motion sickness mechanism of ginger. (medscape.com)
  • The procedure-specific telerobotic surgical systems can assist surgeons in performing dexterous manipulations using the master-slave console bilateral motion generation & mapping mechanism with variable stiffness. (labren.org)
Illusions1
  • Online demonstration activities, such as through the use of perception experiments, illusions that illustrate key concepts, and models of cognitive processes, bring concepts and examples to life. (oup.com)
Signs and symptoms2
  • Persons under 2 years rarely show signs and symptoms of motion sickness. (medscape.com)
  • For a complete list of motion sickness-associated signs and symptoms, see Box 8-06 . (cdc.gov)
Velocity2
  • We've learned that motion, velocity, simultaneity, and length, are all relative to your frame of reference - motion changes your perception of these things. (logosconcarne.com)
  • An Earthly frame of reference was enough to illustrate how motion affects velocity, simultaneity, and length. (logosconcarne.com)
Coordination1
  • This week's Food & Paper will be given by James Herbert-Read (Cambridge University) on perception, motion and coordination in animal groups. (uio.no)
Study3
  • Through this modeling study, we demonstrate several achievements compared with former bio-plausible translational motion detectors, like the elementary motion detectors. (arxiv.org)
  • However, in our previous study, the synchronous motion accompanied the spatial alignment, and hence it is unclear whether the synchronous motion per se or the spatial alignment is responsible for the modulation of animacy perception. (elsevier.com)
  • The present study investigated the effects of these two factors by manipulating the spatial alignment independently from the motion synchrony. (elsevier.com)
Cortical Correlates of Human Motion Perception Biases | Journal of Neuroscience
Cortical Correlates of Human Motion Perception Biases | Journal of Neuroscience (jneurosci.org)
21.11.2019 Prof. Dr. Mark Greenlee - Universität Ulm
21.11.2019 Prof. Dr. Mark Greenlee - Universität Ulm (uni-ulm.de)
People
People (tudelft.nl)
Jiro GYOBA | Professor (Professor Emeritus of Tohoku University) | Ph.D. | Department of Psychology, Faculty of Comprehensive...
Jiro GYOBA | Professor (Professor Emeritus of Tohoku University) | Ph.D. | Department of Psychology, Faculty of Comprehensive... (researchgate.net)
PDF) Some Practical Considerations of Ethical Issues in VR Research
PDF) Some Practical Considerations of Ethical Issues in VR Research (researchgate.net)
Operations and human factors | TNO
Operations and human factors | TNO (tno.nl)
PDF) Keyframe animation and motion capture for creating animation: a survey and perception from industry people
PDF) Keyframe animation and motion capture for creating animation: a survey and perception from industry people (researchgate.net)
US20200401938A1 - Machine learning based generation of ontology for structural and functional mapping - Google Patents
US20200401938A1 - Machine learning based generation of ontology for structural and functional mapping - Google Patents (patents.google.com)
Th me astral et carte du ciel de Johnny Weir, n le 02/07/1984
Th me astral et carte du ciel de Johnny Weir, n le 02/07/1984 (astrotheme.fr)
Peri-Saccadic Natural Vision | Journal of Neuroscience
Peri-Saccadic Natural Vision | Journal of Neuroscience (jneurosci.org)
Predicting the Partition of Behavioral Variability in Speed Perception with Naturalistic Stimuli | Journal of Neuroscience
Predicting the Partition of Behavioral Variability in Speed Perception with Naturalistic Stimuli | Journal of Neuroscience (jneurosci.org)
IJGI | Free Full-Text | AutoCloud+, a Universal Physical and Statistical Model-Based 2D Spatial Topology-Preserving Software...
IJGI | Free Full-Text | AutoCloud+, a "Universal" Physical and Statistical Model-Based 2D Spatial Topology-Preserving Software... (mdpi.com)
Publications | Max Planck Institute
Publications | Max Planck Institute (mpi.nl)
New Issue Alert: International Journal of Digital Curation: Vol 6, No 2 (2011)
New Issue Alert: International Journal of Digital Curation: Vol 6, No 2 (2011) (infodocket.com)
CLOCKSS Names Alicia Wise as New Executive Director
CLOCKSS Names Alicia Wise as New Executive Director (infodocket.com)
Texas: Work Begins On BiblioTech Facility that Will Be Home to First All-Digital (Bookless) Public Library System in U.S.
Texas: Work Begins On BiblioTech Facility that Will Be Home to First All-Digital (Bookless) Public Library System in U.S. (infodocket.com)
Constructing the Modern Mind - Scientific American
Constructing the Modern Mind - Scientific American (scientificamerican.com)
Browsing Waterloo Research by Title
Browsing Waterloo Research by Title (uwspace.uwaterloo.ca)
Grants for Individuals
Grants for Individuals (grahamfoundation.org)
Binocular vision and the control of foot placement during walking in natural terrain | Scientific Reports
Binocular vision and the control of foot placement during walking in natural terrain | Scientific Reports (nature.com)
Staff | Max Planck Institute for Human Cognitive and Brain Sciences
Staff | Max Planck Institute for Human Cognitive and Brain Sciences (cbs.mpg.de)
Affect Brain Perception - 400 Words | Bartleby
Affect Brain Perception - 400 Words | Bartleby (bartleby.com)
Motion Sickness Drug May Worsen Vestibular Perception - MPR
Motion Sickness Drug May Worsen Vestibular Perception - MPR (empr.com)
Reflections on the Mirror Neuron System: Their Evolutionary Functions Beyond Motor Representation | SpringerLink
Reflections on the Mirror Neuron System: Their Evolutionary Functions Beyond Motor Representation | SpringerLink (link.springer.com)
Publications
Publications (epfl.ch)
Infantile Esotropia Clinical Presentation: History, Physical, Causes
Infantile Esotropia Clinical Presentation: History, Physical, Causes (emedicine.medscape.com)
Hallucinogenic Mushroom Toxicity Workup: Approach Considerations, Laboratory Studies, Identification of Mushroom Specimens
Hallucinogenic Mushroom Toxicity Workup: Approach Considerations, Laboratory Studies, Identification of Mushroom Specimens (emedicine.medscape.com)
(emedicine.medscape.com)
Manuel W thrich - Google Scholar
Manuel W thrich - Google Scholar (scholar.google.de)
IXL | Learn 4th grade science
IXL | Learn 4th grade science (ixl.com)
Leave Home: Hypnotic Milky Way Timelapse from New Zealand - Universe Today
Leave Home: Hypnotic Milky Way Timelapse from New Zealand - Universe Today (universetoday.com)
Stem Cell Therapy Blinds Three Patients at Florida Clinic
Stem Cell Therapy Blinds Three Patients at Florida Clinic (medscape.com)
Stem Cell Therapy Blinds Three Patients at Florida Clinic
Stem Cell Therapy Blinds Three Patients at Florida Clinic (medscape.com)
Asperger Syndrome Differential Diagnoses
Asperger Syndrome Differential Diagnoses (emedicine.medscape.com)