The selecting and organizing of visual stimuli based on the individual's past experience.
Area of the OCCIPITAL LOBE concerned with the processing of visual information relayed via VISUAL PATHWAYS.
The process by which the nature and meaning of sensory stimuli are recognized and interpreted.
Investigative technique commonly used during ELECTROENCEPHALOGRAPHY in which a series of bright light flashes or visual patterns are used to elicit brain activity.
The electric response evoked in the cerebral cortex by visual stimulation or stimulation of the 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.
The total area or space visible in a person's peripheral vision with the eye looking straightforward.
The real or apparent movement of objects through the visual field.
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.
Mental process to visually perceive a critical number of facts (the pattern), such as characters, shapes, displays, or designs.
Perception of three-dimensionality.
The process in which light signals are transformed by the PHOTORECEPTOR CELLS into electrical signals which can then be transmitted to the brain.
The sensory discrimination of a pattern shape or outline.
Differential response to different stimuli.
The awareness of the spatial properties of objects; includes physical space.
Focusing on certain aspects of current experience to the exclusion of others. It is the act of heeding or taking notice or concentrating.
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.
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.
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.
The sensory interpretation of the dimensions of objects.
The minimum amount of stimulus energy necessary to elicit a sensory response.
The misinterpretation of a real external, sensory experience.
The time from the onset of a stimulus until a response is observed.
An illusion of vision usually affecting spatial relations.
The coordination of a sensory or ideational (cognitive) process and a motor activity.
A subjective visual sensation with the eyes closed and in the absence of light. Phosphenes can be spontaneous, or induced by chemical, electrical, or mechanical (pressure) stimuli which cause the visual field to light up without optical inputs.
Signals for an action; that specific portion of a perceptual field or pattern of stimuli to which a subject has learned to respond.
The positioning and accommodation of eyes that allows the image to be brought into place on the FOVEA CENTRALIS of each eye.
Loss of the ability to comprehend the meaning or recognize the importance of various forms of stimulation that cannot be attributed to impairment of a primary sensory modality. Tactile agnosia is characterized by an inability to perceive the shape and nature of an object by touch alone, despite unimpaired sensation to light touch, position, and other primary sensory modalities.
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.
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.
The blending of separate images seen by each eye into one composite image.
Imaging techniques used to colocalize sites of brain functions or physiological activity with brain structures.
The process whereby auditory stimuli are selected, organized, and interpreted by the organism.
Voluntary or reflex-controlled movements of the eye.
Visual impairments limiting one or more of the basic functions of the eye: visual acuity, dark adaptation, color vision, or peripheral vision. These may result from EYE DISEASES; OPTIC NERVE DISEASES; VISUAL PATHWAY diseases; OCCIPITAL LOBE diseases; OCULAR MOTILITY DISORDERS; and other conditions (From Newell, Ophthalmology: Principles and Concepts, 7th ed, p132).
The human being as a non-anatomical and non-zoological entity. The emphasis is on the philosophical or artistic treatment of the human being, and includes lay and social attitudes toward the body in history. (From J. Cassedy, NLM History of Medicine Division)
Sense of awareness of self and of the environment.
Awareness of oneself in relation to time, place and person.
The ability to estimate periods of time lapsed or duration of time.
An abrupt voluntary shift in ocular fixation from one point to another, as occurs in reading.
Artificial device such as an externally-worn camera attached to a stimulator on the RETINA, OPTIC NERVE, or VISUAL CORTEX, intended to restore or amplify vision.
Psychophysical technique that permits the estimation of the bias of the observer as well as detectability of the signal (i.e., stimulus) in any sensory modality. (From APA, Thesaurus of Psychological Index Terms, 8th ed.)
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.
A system which emphasizes that experience and behavior contain basic patterns and relationships which cannot be reduced to simpler components; that is, the whole is greater than the sum of its parts.
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.
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).
The act of "taking account" of an object or state of affairs. It does not imply assessment of, nor attention to the qualities or nature of the object.
The perceiving of attributes, characteristics, and behaviors of one's associates or social groups.
The interference of one perceptual stimulus with another causing a decrease or lessening in perceptual effectiveness.
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.
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.
Upper central part of the cerebral hemisphere. It is located posterior to central sulcus, anterior to the OCCIPITAL LOBE, and superior to the TEMPORAL LOBES.
Methods of giving food to humans or animals.
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.
The ability to respond to segments of the perceptual experience rather than to the whole.
Lack of correspondence between the way a stimulus is commonly perceived and the way an individual perceives it under given conditions.
Learning that is manifested in the ability to respond differentially to various stimuli.
The visually perceived property of objects created by absorption or reflection of specific wavelengths of light.
Method of measuring and mapping the scope of vision, from central to peripheral of each eye.
A statistical technique that isolates and assesses the contributions of categorical independent variables to variation in the mean of a continuous dependent variable.
Those forces and content of the mind which are not ordinarily available to conscious awareness or to immediate recall.
The measurement of magnetic fields over the head generated by electric currents in the brain. As in any electrical conductor, electric fields in the brain are accompanied by orthogonal magnetic fields. The measurement of these fields provides information about the localization of brain activity which is complementary to that provided by ELECTROENCEPHALOGRAPHY. Magnetoencephalography may be used alone or together with electroencephalography, for measurement of spontaneous or evoked activity, and for research or clinical purposes.
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.
The functional superiority and preferential use of one eye over the other. The term is usually applied to superiority in sighting (VISUAL PERCEPTION) or motor task but not difference in VISUAL ACUITY or dysfunction of one of the eyes. Ocular dominance can be modified by visual input and NEUROTROPHIC FACTORS.
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.
Tests designed to assess neurological function associated with certain behaviors. They are used in diagnosing brain dysfunction or damage and central nervous system disorders or injury.
A technique that involves the use of electrical coils on the head to generate a brief magnetic field which reaches the CEREBRAL CORTEX. It is coupled with ELECTROMYOGRAPHY response detection to assess cortical excitability by the threshold required to induce MOTOR EVOKED POTENTIALS. This method is also used for BRAIN MAPPING, to study NEUROPHYSIOLOGY, and as a substitute for ELECTROCONVULSIVE THERAPY for treating DEPRESSION. Induction of SEIZURES limits its clinical usage.
Use of sound to elicit a response in the nervous system.
The process of discovering or asserting an objective or intrinsic relation between two objects or concepts; a faculty or power that enables a person to make judgments; the process of bringing to light and asserting the implicit meaning of a concept; a critical evaluation of a person or situation.
Theoretical representations that simulate psychological processes and/or social processes. These include the use of mathematical equations, computers, and other electronic equipment.
Elements of limited time intervals, contributing to particular results or situations.
Brain waves characterized by a relatively high voltage or amplitude and a frequency of 8-13 Hz. They constitute the majority of waves recorded by EEG registering the activity of the parietal and occipital lobes when the individual is awake, but relaxed with the eyes closed.
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.
Intellectual or mental process whereby an organism obtains knowledge.
Part of the DIENCEPHALON inferior to the caudal end of the dorsal THALAMUS. Includes the lateral geniculate body which relays visual impulses from the OPTIC TRACT to the calcarine cortex, and the medial geniculate body which relays auditory impulses from the lateral lemniscus to the AUDITORY CORTEX.
Recording of electric currents developed in the brain by means of electrodes applied to the scalp, to the surface of the brain, or placed within the substance of the brain.
The knowledge or perception that someone or something present has been previously encountered.
The anterior portion of the head that includes the skin, muscles, and structures of the forehead, eyes, nose, mouth, cheeks, and jaw.
That portion of the electromagnetic spectrum in the visible, ultraviolet, and infrared range.
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.
The observable response of a man or animal to a situation.
The process by which PAIN is recognized and interpreted by the brain.
Relatively permanent change in behavior that is the result of past experience or practice. The concept includes the acquisition of knowledge.
Complex mental function having four distinct phases: (1) memorizing or learning, (2) retention, (3) recall, and (4) recognition. Clinically, it is usually subdivided into immediate, recent, and remote memory.
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)
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.
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.
A meshlike structure composed of interconnecting nerve cells that are separated at the synaptic junction or joined to one another by cytoplasmic processes. In invertebrates, for example, the nerve net allows nerve impulses to spread over a wide area of the net because synapses can pass information in any direction.
The detailed examination of observable activity or behavior associated with the execution or completion of a required function or unit of work.
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.
A genus of the subfamily CERCOPITHECINAE, family CERCOPITHECIDAE, consisting of 16 species inhabiting forests of Africa, Asia, and the islands of Borneo, Philippines, and Celebes.
Remembrance of information for a few seconds to hours.
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.
Neural tracts connecting one part of the nervous system with another.
Conceptual functions or thinking in all its forms.
A dimension of auditory sensation varying with cycles per second of the sound stimulus.
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.
The process by which the nature and meaning of olfactory stimuli, such as odors, are recognized and interpreted by the brain.
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.
The inability to see or the loss or absence of perception of visual stimuli. This condition may be the result of EYE DISEASES; OPTIC NERVE DISEASES; OPTIC CHIASM diseases; or BRAIN DISEASES affecting the VISUAL PATHWAYS or OCCIPITAL LOBE.
A series of tests used to assess various functions of the eyes.
The non-genetic biological changes of an organism in response to challenges in its ENVIRONMENT.
Images seen by one eye.
The thin layer of GRAY MATTER on the surface of the CEREBRAL HEMISPHERES that develops from the TELENCEPHALON and folds into gyri and sulchi. It reaches its highest development in humans and is responsible for intellectual faculties and higher mental functions.
Recognition and discrimination of the heaviness of a lifted object.
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).
Public attitudes toward health, disease, and the medical care system.
Abrupt changes in the membrane potential that sweep along the CELL MEMBRANE of excitable cells in response to excitation stimuli.
Attitudes of personnel toward their patients, other professionals, toward the medical care system, etc.
The absence or restriction of the usual external sensory stimuli to which the individual responds.
Theoretical representations that simulate the behavior or activity of biological processes or diseases. For disease models in living animals, DISEASE MODELS, ANIMAL is available. Biological models include the use of mathematical equations, computers, and other electronic equipment.
Computer-based representation of physical systems and phenomena such as chemical processes.
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 considered to be inferior to normal vision as represented by accepted standards of acuity, field of vision, or motility. Low vision generally refers to visual disorders that are caused by diseases that cannot be corrected by refraction (e.g., MACULAR DEGENERATION; RETINITIS PIGMENTOSA; DIABETIC RETINOPATHY, etc.).
Sound that expresses emotion through rhythm, melody, and harmony.
Sensation of making physical contact with objects, animate or inanimate. Tactile stimuli are detected by MECHANORECEPTORS in the skin and mucous membranes.
An element with atomic symbol O, atomic number 8, and atomic weight [15.99903; 15.99977]. It is the most abundant element on earth and essential for respiration.
Partial or complete loss of vision in one half of the visual field(s) of one or both eyes. Subtypes include altitudinal hemianopsia, characterized by a visual defect above or below the horizontal meridian of the visual field. Homonymous hemianopsia refers to a visual defect that affects both eyes equally, and occurs either to the left or right of the midline of the visual field. Binasal hemianopsia consists of loss of vision in the nasal hemifields of both eyes. Bitemporal hemianopsia is the bilateral loss of vision in the temporal fields. Quadrantanopsia refers to loss of vision in one quarter of the visual field in one or both eyes.
A severe emotional disorder of psychotic depth characteristically marked by a retreat from reality with delusion formation, HALLUCINATIONS, emotional disharmony, and regressive behavior.
A procedure consisting of a sequence of algebraic formulas and/or logical steps to calculate or determine a given task.
An enduring, learned predisposition to behave in a consistent way toward a given class of objects, or a persistent mental and/or neural state of readiness to react to a certain class of objects, not as they are but as they are conceived to be.
A nonspecific term referring to impaired vision. Major subcategories include stimulus deprivation-induced amblyopia and toxic amblyopia. Stimulus deprivation-induced amblyopia is a developmental disorder of the visual cortex. A discrepancy between visual information received by the visual cortex from each eye results in abnormal cortical development. STRABISMUS and REFRACTIVE ERRORS may cause this condition. Toxic amblyopia is a disorder of the OPTIC NERVE which is associated with ALCOHOLISM, tobacco SMOKING, and other toxins and as an adverse effect of the use of some medications.
Persons with loss of vision such that there is an impact on activities of daily living.
The process in which specialized SENSORY RECEPTOR CELLS transduce peripheral stimuli (physical or chemical) into NERVE IMPULSES which are then transmitted to the various sensory centers in the CENTRAL NERVOUS SYSTEM.
A method of data collection and a QUALITATIVE RESEARCH tool in which a small group of individuals are brought together and allowed to interact in a discussion of their opinions about topics, issues, or questions.
Processes and properties of the EYE as a whole or of any of its parts.
A localized defect in the visual field bordered by an area of normal vision. This occurs with a variety of EYE DISEASES (e.g., RETINAL DISEASES and GLAUCOMA); OPTIC NERVE DISEASES, and other conditions.
The anterior pair of the quadrigeminal bodies which coordinate the general behavioral orienting responses to visual stimuli, such as whole-body turning, and reaching.
Function of the human eye that is used in bright illumination or in daylight (at photopic intensities). Photopic vision is performed by the three types of RETINAL CONE PHOTORECEPTORS with varied peak absorption wavelengths in the color spectrum (from violet to red, 400 - 700 nm).
The domestic cat, Felis catus, of the carnivore family FELIDAE, comprising over 30 different breeds. The domestic cat is descended primarily from the wild cat of Africa and extreme southwestern Asia. Though probably present in towns in Palestine as long ago as 7000 years, actual domestication occurred in Egypt about 4000 years ago. (From Walker's Mammals of the World, 6th ed, p801)
Scales, questionnaires, tests, and other methods used to assess pain severity and duration in patients or experimental animals to aid in diagnosis, therapy, and physiological studies.
Studies in which the presence or absence of disease or other health-related variables are determined in each member of the study population or in a representative sample at one particular time. This contrasts with LONGITUDINAL STUDIES which are followed over a period of time.
The science or study of speech sounds and their production, transmission, and reception, and their analysis, classification, and transcription. (Random House Unabridged Dictionary, 2d ed)
Observable changes of expression in the face in response to emotional stimuli.
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)
Those affective states which can be experienced and have arousing and motivational properties.
The degree to which the individual regards the health care service or product or the manner in which it is delivered by the provider as useful, effective, or beneficial.
An area approximately 1.5 millimeters in diameter within the macula lutea where the retina thins out greatly because of the oblique shifting of all layers except the pigment epithelium layer. It includes the sloping walls of the fovea (clivus) and contains a few rods in its periphery. In its center (foveola) are the cones most adapted to yield high visual acuity, each cone being connected to only one ganglion cell. (Cline et al., Dictionary of Visual Science, 4th ed)
A person's view of himself.
A mechanism of communicating one's own sensory system information about a task, movement or skill.
A pair of ophthalmic lenses in a frame or mounting which is supported by the nose and ears. The purpose is to aid or improve vision. It does not include goggles or nonprescription sun glasses for which EYE PROTECTIVE DEVICES is available.
Any type of research that employs nonnumeric information to explore individual or group characteristics, producing findings not arrived at by statistical procedures or other quantitative means. (Qualitative Inquiry: A Dictionary of Terms Thousand Oaks, CA: Sage Publications, 1997)
Electronic hearing devices typically used for patients with normal outer and middle ear function, but defective inner ear function. In the COCHLEA, the hair cells (HAIR CELLS, VESTIBULAR) may be absent or damaged but there are residual nerve fibers. The device electrically stimulates the COCHLEAR NERVE to create sound sensation.
Sensory functions that transduce stimuli received by proprioceptive receptors in joints, tendons, muscles, and the INNER EAR into neural impulses to be transmitted to the CENTRAL NERVOUS SYSTEM. Proprioception provides sense of stationary positions and movements of one's body parts, and is important in maintaining KINESTHESIA and POSTURAL BALANCE.
A perceptual phenomenon used by Gestalt psychologists to demonstrate that events in one part of the perceptual field may affect perception in another part.
Type of vision test used to determine COLOR VISION DEFECTS.
Conversations with an individual or individuals held in order to obtain information about their background and other personal biographical data, their attitudes and opinions, etc. It includes school admission or job interviews.
The attitude of a significant portion of a population toward any given proposition, based upon a measurable amount of factual evidence, and involving some degree of reflection, analysis, and reasoning.
Sense of movement of a part of the body, such as movement of fingers, elbows, knees, limbs, or weights.
Recording of electric potentials in the retina after stimulation by light.
Communication through a system of conventional vocal symbols.
Photosensitive protein complexes of varied light absorption properties which are expressed in the PHOTORECEPTOR CELLS. They are OPSINS conjugated with VITAMIN A-based chromophores. Chromophores capture photons of light, leading to the activation of opsins and a biochemical cascade that ultimately excites the photoreceptor cells.
Any sound which is unwanted or interferes with HEARING other sounds.
Deviations from the average or standard indices of refraction of the eye through its dioptric or refractive apparatus.
An unpleasant sensation induced by noxious stimuli which are detected by NERVE ENDINGS of NOCICEPTIVE NEURONS.
The point or frequency at which all flicker of an intermittent light stimulus disappears.
The statistical reproducibility of measurements (often in a clinical context), including the testing of instrumentation or techniques to obtain reproducible results. The concept includes reproducibility of physiological measurements, which may be used to develop rules to assess probability or prognosis, or response to a stimulus; reproducibility of occurrence of a condition; and reproducibility of experimental results.
Misalignment of the visual axes of the eyes. In comitant strabismus the degree of ocular misalignment does not vary with the direction of gaze. In noncomitant strabismus the degree of misalignment varies depending on direction of gaze or which eye is fixating on the target. (Miller, Walsh & Hoyt's Clinical Neuro-Ophthalmology, 4th ed, p641)
An oval, bony chamber of the inner ear, part of the bony labyrinth. It is continuous with bony COCHLEA anteriorly, and SEMICIRCULAR CANALS posteriorly. The vestibule contains two communicating sacs (utricle and saccule) of the balancing apparatus. The oval window on its lateral wall is occupied by the base of the STAPES of the MIDDLE EAR.
Electrical responses recorded from nerve, muscle, SENSORY RECEPTOR, or area of the CENTRAL NERVOUS SYSTEM following stimulation. They range from less than a microvolt to several microvolts. The evoked potential can be auditory (EVOKED POTENTIALS, AUDITORY), somatosensory (EVOKED POTENTIALS, SOMATOSENSORY), visual (EVOKED POTENTIALS, VISUAL), or motor (EVOKED POTENTIALS, MOTOR), or other modalities that have been reported.
The process of making a selective intellectual judgment when presented with several complex alternatives consisting of several variables, and usually defining a course of action or an idea.
Voluntary or involuntary motion of head that may be relative to or independent of body; includes animals and humans.
The distal part of the arm beyond the wrist in humans and primates, that includes the palm, fingers, and thumb.
A verbal or nonverbal means of communicating ideas or feelings.
Assessment of psychological variables by the application of mathematical procedures.
The volatile portions of substances perceptible by the sense of smell. (Grant & Hackh's Chemical Dictionary, 5th ed)
The science pertaining to the interrelationship of psychologic phenomena and the individual's response to the physical properties of sound.
The ability to detect scents or odors, such as the function of OLFACTORY RECEPTOR NEURONS.
An ocular disease, occurring in many forms, having as its primary characteristics an unstable or a sustained increase in the intraocular pressure which the eye cannot withstand without damage to its structure or impairment of its function. The consequences of the increased pressure may be manifested in a variety of symptoms, depending upon type and severity, such as excavation of the optic disk, hardness of the eyeball, corneal anesthesia, reduced visual acuity, seeing of colored halos around lights, disturbed dark adaptation, visual field defects, and headaches. (Dictionary of Visual Science, 4th ed)
The region of the cerebral cortex that receives the auditory radiation from the MEDIAL GENICULATE BODY.
Eye movements that are slow, continuous, and conjugate and occur when a fixed object is moved slowly.
The absence of light.
Individuals' concept of their own bodies.
The removal of a cataractous CRYSTALLINE LENS from the eye.
The capacity of the NERVOUS SYSTEM to change its reactivity as the result of successive activations.
Photosensitive afferent neurons located primarily within the FOVEA CENTRALIS of the MACULA LUTEA. There are three major types of cone cells (red, blue, and green) whose photopigments have different spectral sensitivity curves. Retinal cone cells operate in daylight vision (at photopic intensities) providing color recognition and central visual acuity.
The perceived attribute of a sound which corresponds to the physical attribute of intensity.
Partial or complete opacity on or in the lens or capsule of one or both eyes, impairing vision or causing blindness. The many kinds of cataract are classified by their morphology (size, shape, location) or etiology (cause and time of occurrence). (Dorland, 27th ed)
Continuation of visual impression after cessation of stimuli causing the original image.
Subjectively experienced sensations in the absence of an appropriate stimulus, but which are regarded by the individual as real. They may be of organic origin or associated with MENTAL DISORDERS.
Adjustment of the eyes under conditions of low light. The sensitivity of the eye to light is increased during dark adaptation.
A collective expression for all behavior patterns acquired and socially transmitted through symbols. Culture includes customs, traditions, and language.
A mechanism of communication within a system in that the input signal generates an output response which returns to influence the continued activity or productivity of that system.
The observable response an animal makes to any situation.
A generic concept reflecting concern with the modification and enhancement of life attributes, e.g., physical, political, moral and social environment; the overall condition of a human life.
Neurons of the innermost layer of the retina, the internal plexiform layer. They are of variable sizes and shapes, and their axons project via the OPTIC NERVE to the brain. A small subset of these cells act as photoreceptors with projections to the SUPRACHIASMATIC NUCLEUS, the center for regulating CIRCADIAN RHYTHM.
The interactions between physician and patient.
The analysis of a critical number of sensory stimuli or facts (the pattern) by physiological processes such as vision (PATTERN RECOGNITION, VISUAL), touch, or hearing.
Normal nystagmus produced by looking at objects moving across the field of vision.
Diseases affecting the eye.
Systematic gathering of data for a particular purpose from various sources, including questionnaires, interviews, observation, existing records, and electronic devices. The process is usually preliminary to statistical analysis of the data.
Application of tests and examinations to identify visual defects or vision disorders occurring in specific populations, as in school children, the elderly, etc. It is differentiated from VISION TESTS, which are given to evaluate/measure individual visual performance not related to a specific population.
A general term for the complete loss of the ability to hear from both ears.
Process whereby a cell, bodily structure, or organism (animal or plant) receives or detects a gravity stimulus. Gravity sensing plays an important role in the directional growth and development of an organism (GRAVITROPISM).

Visual perception: mind and brain see eye to eye. (1/7911)

Recent functional imaging studies have identified neural activity that is closely associated with the perception of illusory motion. The mapping of the mind onto the bin appears to be one-to-one: activity in visual 'motion area' MT is highly correlated with perceptual experience.  (+info)

Vision: modular analysis--or not? (2/7911)

It has commonly been assumed that the many separate areas of the visual system perform modular analyses, each restricted to a single attribute of the image. A recent paper advocates a radically different approach, where all areas in the hierarchy analyse all attributes of the image to extract perceptually relevant decisions.  (+info)

On the neural correlates of visual perception. (3/7911)

Neurological findings suggest that the human striate cortex (V1) is an indispensable component of a neural substratum subserving static achromatic form perception in its own right and not simply as a central distributor of retinally derived information to extrastriate visual areas. This view is further supported by physiological evidence in primates that the finest-grained conjoined representation of spatial detail and retinotopic localization that underlies phenomenal visual experience for local brightness discriminations is selectively represented at cortical levels by the activity of certain neurons in V1. However, at first glance, support for these ideas would appear to be undermined by incontrovertible neurological evidence (visual hemineglect and the simultanagnosias) and recent psychophysical results on 'crowding' that confirm that activation of neurons in V1 may, at times, be insufficient to generate a percept. Moreover, a recent proposal suggests that neural correlates of visual awareness must project directly to those in executive space, thus automatically excluding V1 from a related perceptual space because V1 lacks such direct projections. Both sets of concerns are, however, resolved within the context of adaptive resonance theories. Recursive loops, linking the dorsal lateral geniculate nucleus (LGN) through successive cortical visual areas to the temporal lobe by means of a series of ascending and descending pathways, provide a neuronal substratum at each level within a modular framework for mutually consistent descriptions of sensory data. At steady state, such networks obviate the necessity that neural correlates of visual experience project directly to those in executive space because a neural phenomenal perceptual space subserving form vision is continuously updated by information from an object recognition space equivalent to that destined to reach executive space. Within this framework, activity in V1 may engender percepts that accompany figure-ground segregations only when dynamic incongruities are resolved both within and between ascending and descending streams. Synchronous neuronal activity on a short timescale within and across cortical areas, proposed and sometimes observed as perceptual correlates, may also serve as a marker that a steady state has been achieved, which, in turn, may be a requirement for the longer time constants that accompany the emergence and stability of perceptual states compared to the faster dynamics of adapting networks and the still faster dynamics of individual action potentials. Finally, the same consensus of neuronal activity across ascending and descending pathways linking multiple cortical areas that in anatomic sequence subserve phenomenal visual experiences and object recognition may underlie the normal unity of conscious experience.  (+info)

Competitive mechanisms subserve attention in macaque areas V2 and V4. (4/7911)

It is well established that attention modulates visual processing in extrastriate cortex. However, the underlying neural mechanisms are unknown. A consistent observation is that attention has its greatest impact on neuronal responses when multiple stimuli appear together within a cell's receptive field. One way to explain this is to assume that multiple stimuli activate competing populations of neurons and that attention biases this competition in favor of the attended stimulus. In the absence of competing stimuli, there is no competition to be resolved. Accordingly, attention has a more limited effect on the neuronal response to a single stimulus. To test this interpretation, we measured the responses of neurons in macaque areas V2 and V4 using a behavioral paradigm that allowed us to isolate automatic sensory processing mechanisms from attentional effects. First, we measured each cell's response to a single stimulus presented alone inside the receptive field or paired with a second receptive field stimulus, while the monkey attended to a location outside the receptive field. Adding the second stimulus typically caused the neuron's response to move toward the response that was elicited by the second stimulus alone. Then, we directed the monkey's attention to one element of the pair. This drove the neuron's response toward the response elicited when the attended stimulus appeared alone. These findings are consistent with the idea that attention biases competitive interactions among neurons, causing them to respond primarily to the attended stimulus. A quantitative neural model of attention is proposed to account for these results.  (+info)

MST neuronal responses to heading direction during pursuit eye movements. (5/7911)

As you move through the environment, you see a radial pattern of visual motion with a focus of expansion (FOE) that indicates your heading direction. When self-movement is combined with smooth pursuit eye movements, the turning of the eye distorts the retinal image of the FOE but somehow you still can perceive heading. We studied neurons in the medial superior temporal area (MST) of monkey visual cortex, recording responses to FOE stimuli presented during fixation and smooth pursuit eye movements. Almost all neurons showed significant changes in their FOE selective responses during pursuit eye movements. However, the vector average of all the neuronal responses indicated the direction of the FOE during both fixation and pursuit. Furthermore, the amplitude of the net vector increased with increasing FOE eccentricity. We conclude that neuronal population encoding in MST might contribute to pursuit-tolerant heading perception.  (+info)

Short-latency vergence eye movements induced by radial optic flow in humans: dependence on ambient vergence level. (6/7911)

Radial patterns of optic flow, such as those experienced by moving observers who look in the direction of heading, evoke vergence eye movements at short latency. We have investigated the dependence of these responses on the ambient vergence level. Human subjects faced a large tangent screen onto which two identical random-dot patterns were back-projected. A system of crossed polarizers ensured that each eye saw only one of the patterns, with mirror galvanometers to control the horizontal positions of the images and hence the vergence angle between the two eyes. After converging the subject's eyes at one of several distances ranging from 16.7 cm to infinity, both patterns were replaced with new ones (using a system of shutters and two additional projectors) so as to simulate the radial flow associated with a sudden 4% change in viewing distance with the focus of expansion/contraction imaged in or very near both foveas. Radial-flow steps induced transient vergence at latencies of 80-100 ms, expansions causing increases in convergence and contractions the converse. Based on the change in vergence 90-140 ms after the onset of the steps, responses were proportional to the preexisting vergence angle (and hence would be expected to be inversely proportional to viewing distance under normal conditions). We suggest that this property assists the observer who wants to fixate ahead while passing through a visually cluttered area (e.g., a forest) and so wants to avoid making vergence responses to the optic flow created by the nearby objects in the periphery.  (+info)

Why and how is soft copy reading possible in clinical practice? (7/7911)

The properties of the human visual system (HVS) relevant to the diagnostic process are described after a brief introduction on the general problems and advantages of using soft copy for primary radiology interpretations. At various spatial and temporal frequencies the contrast sensitivity defines the spatial resolution of the eye-brain system and the sensitivity to flicker. The adaptation to the displayed radiological scene and the ambient illumination determine the dynamic range for the operation of the HVS. Although image display devices are determined mainly by state-of-the-art technology, analysis of the HVS may suggest technical characteristics for electronic displays that will help to optimize the display to the operation of the HVS. These include display size, spatial resolution, contrast resolution, luminance range, and noise, from which further consequences for the technical components of a monitor follow. It is emphasized that routine monitor quality control must be available in clinical practice. These image quality measures must be simple enough to be applied as part of the daily routine. These test instructions might also serve as elements of technical acceptance and constancy tests.  (+info)

Visual motion analysis for pursuit eye movements in area MT of macaque monkeys. (8/7911)

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)

Impaired vision is a significant independent risk factor for falls among older adults. Impaired vision is also associated with reduced spatial cognition in frequent fallers. Despite the evidence of a strong influence of visual cognitive factors on fall risk in older adults, most guidelines for fall prevention still only focus on visual acuity and corrective eyewear. Regular physical activity alleviates some of the issues related to falls risk (e.g. increased muscle strength, improved neuromuscular control, and reduced reaction time). Increased physical activity may also increase blood flow in the hippocampus, suggesting physical activity can improve spatial cognition. However, it is currently unknown how visual cognition changes with regular exercise participation. The purpose of the current study was to examine changes in visual cognition following a 12-week exercise intervention program. Thirty-four independent living older adults age 60 years or above participated in the study. Participants ...
We will continue the dive into low level human abilities. This time we will take a look at human visual perception and its implications for user interface design.. Required prep (post your written response before class):. ...
We are currently looking for families with 5- and 11-month-old infants to participate in our visual attention and memory studies. Sound like fun? Click HERE to
Headed by Dr. Stephen Mitroff, the Visual Cognition Lab is an interdisciplinary group of undergraduate students, graduate students, and postdoctoral researchers who share an interest in cognitive psychology and visual perception. Our research focuses on the individual differences in, and the malleability of, visual perception and attention ...
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Theories of visual perception traditionally have considered a static retinal image to be the starting point for processing; and has considered processing both to be passive and a literal translation of that frozen, two dimensional, pictorial image. This paper considers five problem areas in the analysis of human visually guided locomotion, in which the traditional approach is contrasted to newer ones that utilize dynamic definitions of stimulation, and an active perceiver: (1) differentiation between object motion and self motion, and among the various kinds of self motion (e.g., eyes only, head only, whole body, and their combinations); (2) the sources and contents of visual information that guide movement; (3) the acquisition and performance of perceptual motor skills; (4) the nature of spatial representations, percepts, and the perceived layout of space; and (5) and why the retinal image is a poor starting point for perceptual processing. These newer approaches argue that stimuli must be ...
Understanding visual cognition means knowing where and when what is happening in the brain when we see. To address these questions in a common framework we combined deep neural networks (DNNs) with fMRI and MEG by representational similarity analysis. We will present results from two studies. The first study investigated the spatio-temporal neural dynamics during visual object recognition. Combining DNNs with fMRI, we showed that DNNs predicted a spatial hierarchy of visual representations in both the ventral, and the dorsal visual stream. Combining DNNs with MEG, we showed that DNNs predicted a temporal hierarchy with which visual representations emerged. This indicates that 1) DNNs predict the hierarchy of visual brain dynamics in space and time, and 2) provide novel evidence for object representations in parietal cortex. The second study investigated how abstract visual properties, such as scene size, emerge in the human brain in time. First, we identified an electrophysiological marker of ...
The visual perception section develops understanding of visual perception in human performance. Visual perception is closely involved with mental processing and reaction to events.. UNDER CONSTRUCTION. ...
The aim of this study was to determine the interrelationship of visual-motor integration, visual perception and motor coordination with object control skills in Grade 1-learners in th e North-West Province of South Africa. This study is based on only the baseline data of a longitudinal study (NW-CHILD study) in progress. The Grade 1-learners (N=806) had a mean age of 6.84±0.39 years. The Developmental Test of Visual-Motor Integration (4th ed.) (VMI), was used to evaluate visual skills, while the Test of Gross Motor Development-2 evaluated six object control skills. There was a statistical significant (p?0.01) association between VMI, two object control skills and total score for object control skills. Visual perception had the highest correlation with all the object control skills where a statistically significant (p?0.05) association with five object control skills and the total score was obtained. Motor coordination had small but significant correlations with two object control skills. ...
Learn about human visual perception! Visual Perception is a fully-featured flash card app that teaches you how humans perceive light, pictures, images, ...
Functional Neuroimaging of Visual Cognition (Attention and Performance Series) at - ISBN 10: 0198528450 - ISBN 13: 9780198528456 - Oxford University Press - 2004 - Hardcover
Finden Sie alle Bücher von Arathorn, David Y.; Arathorn, D. W. - Map-Seeking Circuits in Visual Cognition: A Computational Mechanism for Biological and Machine Vision. Bei der Büchersuchmaschine können Sie antiquarische und Neubücher VERGLEICHEN UND SOFORT zum Bestpreis bestellen. 9780804742771
The aim of this research was to study the relationship between perceptual judgments about space and time. If spatial and temporal judgments were dissociable, they should be modulated selectively by attention. We compared the effect of the attentional set upon fine-grained spatial versus temporal discrimination of visual perception in two experiments. Using identical sensory stimulation, we measured perceptual judgments on either the size of a small spatial gap or the duration of a brief temporal gap. The attentional set was manipulated by cuing the task that was most likely to be performed. In one experiment, a neutral cue was also used, to measure relative benefits and costs of spatial and temporal task sets. If the attentional set could be directed selectively to spatial and temporal task-relevant dimensions, performance on both spatial and temporal acuity tasks should be specifically modulated by task cuing. The results showed that the attentional set enhanced the speed and accuracy of perceptual
TY - JOUR. T1 - Haptic and visual perception of proportion. AU - Appelle, Stuart. AU - Goodnow, Jacqueline J.. PY - 1970/4. Y1 - 1970/4. KW - haptic & visual perception of proportion, paired comparison judgments. UR - U2 - 10.1037/h0028924. DO - 10.1037/h0028924. M3 - Article. C2 - 5480920. AN - SCOPUS:0014767258. VL - 84. SP - 47. EP - 52. JO - Journal of Experimental Psychology. JF - Journal of Experimental Psychology. SN - 0022-1015. IS - 1. ER - ...
Visual perception in children is known to serve as an early indicator of learning and achievement disorders. The project ViWa focused on the development of visual perception and its relationship to math precursor skills and social-emotional competencies in children aged four to ten years.
Visual perception , Visual perception , کتابخانه دیجیتالی دانشگاه علوم پزشکی و خدمات درمانی شهید بهشتی
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VSAC - Visual Science of Art Conference VSAC will start just the 26 and end the 27th of August 2016. VSAC will take place in COSMOCAIXA. Please follow this link for more information Facebook:
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The thesis aspires to challenge CP by means of this formal analysis. Whether it belongs to a simple technique or a sophisticated visual scheme of ancient Chinese artists; the representational space of geometry; the making of visual perception by means of technical implements; and the bodily experience in actual space, are all shown to be indispensible parts of the present research. A concluding case study of the Chinese landscape garden gives a further demonstration that the pictorial ideas and visual techniques that once contributed to the iconological and psychological understanding of Chinese painting have also delivered an idealised form of spatial perception within the garden - where the sense of depth is firstly eliminated, and then artistically reconstituted. In this way, the nature of cavalier perspective will therefore have been explored on two levels - in the form of both spatial representation and bodily perception in actual space.. ...
PEER REVIEWED ARTICLES. Jozwik, K.M., Kriegeskorte, N., Mur, M. (2015) Visual features as stepping stones toward semantics: Explaining object similarity in IT and perception with non-negative least squares Special issue Functional selectivity in perceptual and cognitive systems Neuropsychologia S0028-3932(15)30199-8. doi: 10.1016/j.neuropsychologia.2015.10.023.. Jozwik, K.M., Carroll, J.S. (2012) Pioneer factors in hormone dependent cancers Nature Reviews Cancer 4;12(6):381-5. doi: 10.1038/nrc3263.. IN REVISION. Jozwik, K.M., Chernukhin, I., Serandour, A. A., Carroll, J.S. FOXA1 directs H3K4 monomethylation at enhancers via recruitment of the methyltransferase MLL3. IN PREPARATION. Jozwik, K.M., Chernukhin, I., Stark R., Carroll, J.S. FOXA1 interactome screen in MCF7 and tamoxifen resistant cell lines. Jozwik, K.M., Kriegeskorte, N., Cichy, R. M., Mur, M. Visual features versus categories: Explaining object representations in primate IT and deep neural networks with weighted ...
Speaker instructions Each talk slot at the conference has a length of 15min. Please prepare your presentation to be not longer than 12 min to allow for questions and comments from the audience. Please be aware that the audience consists of participants from various fields in vision research and prepare your talk to be understandable also for those who are not particularly familiar with your special field of interest.
Course Description: The course will consider how what we see is generated by the visual system, and what visual perception indicates about how the brain works. The evidence will be drawn from neuroscience, psychology, science history and philosophy. Although the discussions will be informed by visual system anatomy and physiology, the focus is on perception. ...
Do you fancy yourself as a bit of a visual talent? See if you can spot the odd ones out in all stages of this challenging visual quiz. If you can, well done, your visual perception skills are astonishing! Dont forget to challenge your friends!
In bottom-up visual perception our eyes quickly move and fixate before processing the information they take in. Some data is pushed to memory. Some isnt.
Neurons in the primate medial temporal lobe (MTL) respond selectively to visual categories such as faces, contributing to how the brain represents stimulus meaning. However, it remains unknown whether MTL neurons continue to encode stimulus meaning when it changes flexibly as a function of variable task demands imposed by goal-directed behavior. While classically associated with long-term memory, recent lesion and neuroimaging studies show that the MTL also contributes critically to the online guidance of goal-directed behaviors such as visual search. Do such tasks modulate responses of neurons in the MTL, and if so, do their responses mirror bottom-up input from visual cortices or do they reflect more abstract goal-directed properties? To answer these questions, we performed concurrent recordings of eye movements and single neurons in the MTL and medial frontal cortex (MFC) in human neurosurgical patients performing a memory-guided visual search task. We identified a distinct population of ...
The other day I mentioned that Ive been studying visual cognition, and in particular Ive been reading Vision Science: Photons To Phenomenology, by Stephen
The chapters in this book are based on papers presented at the 23rd Carnegie Mellon Symposia on Cognition. At this exciting event, speaker after speaker presented new discoveries about infants visual perception in areas ranging from sensory…
Top down image semantics play a major role in predicting where people look in images. Present state-of-the-art approaches to model human visual attention incorporate high level object detections signifying top down image semantics in a separate channel along with other bottom up saliency channels. However, multiple objects in a scene are competing to attract our attention and
What is Visual Perception? Definition & Theory - Video - Sensation: Your visual sensors (retinas) †see’ a furry face and moving tail. Perception: Your †brain’ interprets your sensations, to recognize a happy dog.
Taking a trip down memory lane while you are driving could land you in a roadside ditch, new research indicates. Vanderbilt University psychologists have found that our visual perception can be contaminated by memories of ...
An introduction to the scientific study of vision, with an emphasis on the biological substrate and its relation to behavior. Topics will typically include physiological optics, transduction of light, visual thresholds, anatomy and physiology of the visual pathways, retinal processing, properties of visual cortex, and color vision. Some seats in this course have been reserved for LPS Pre-Health Program students and the remainder have been reserved for SAS College students. If you would like to join the wait list for this course please email [email protected] Course must be taken for a grade. ...
Research conducted by the Vision Group is aimed at a better understanding of the mechanisms underlying a variety of visual phenomena and of the links between visual perception and action. Our interests include the properties of visual attention and of spatial maps, visual perception during eye and head movements, the information and use of multiple cues for the perception of depth and motion, the perception of duration of visual events, and visual decision processes. We also do research on hearing and touch, especially in their interactions with and analogies to vision. Our methodological approaches are mostly experimental (visual psychophysics) with links to modeling and brain imaging ...
An emerging topic in behavioural biology and psychology is brain lateralization. E.g. the asymmetrical organization of the brain in the left right plain. At first, this phenomenon was described only in humans, and was regarded as one of the extraordinary features of our „superior‟ brain. Later, it was discovered that lateralization exists in many animal species. This asymmetrical organization of the brain results in asymmetrical output called behaviour. The most common example of this in humans is handedness. Asymmetry is described in more and more behaviours, but its origin remains debated. Are they simply „nature‟; hard-coded in our DNA? Or are they „nurture‟ and caused by environmental conditions or experience? The subject of this thesis is asymmetries in visual perception in humans. It is easy to think we perceive the world in an unbiased way. But with an asymmetric brain, it is more likely that we also have asymmetrical perception. This study tries to answer some important ...
Put young children on the road to learning success with this collection of fun, reproducible skill-building practice pages. Perfect for home or school, these age-appropriate activities teach and reinforce key skills, such as: visual perception (recognizing largest/smallest/longest/alike/different/etc.); and drawing skills (complete the picture, drawing prompts).This enhanced eBook gives you the freedom to copy and paste the content of each page into the format that fits your
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The relationship between field dependence/independence and the level of improvement in visual perception by means of 3-D graphic programs in 9-11 year olds (HEBREW) ...
Answer the following questions in a minimum of 150 words each. Use complete sentences and correct grammar and spelling. Use APA formatting to cite resources appropriately. ( Reading Modules 1-5 First ) Questions: 1. In your own words, describe ways in which the processes of visual perception help you to engage in
Compare cheapest textbook prices for Theories of Visual Perception, Ian E. Gordon - 9781841693835. Find the lowest prices on SlugBooks
Visual Perceptions Vernon ophthalmology (eye) clinic is based Vernon, United States. 18 patients reviewed this clinic & 100% would recommend it.
Visual scene analysis is a computer-based effort to simulate visual perception. It requires the computer to identify which parts of a scene belong together to form objects. The key process is called constraint satisfaction. The computer locates edges and corners where lines come together (called vertexes). The assignment of meaning to each line and vertex has the effect of limiting or constraining the interpretation put on other parts of the scene. The constraints propagate. Each part of the scene, when interpreted, helps to limit possible interpretations of other parts of the scene.. Constraint-propagation eventually produces one interpretation of the whole scene that is consistent with all the evidence. Classic work on visual scene analysis in the mid-60s culminated in a successful program by the 1980s. Success, in this case, was defined by a computers ability to start with a visual image from a camera and identify boundaries of all objects in the scene, while specifying which lines, ...
Chen, S., Shi, Z., Müller, H. J., & Geyer, T. (2021). Multisensory visuo-tactile context learning enhances the guidance of unisensory visual search. Scientific Reports, 11(1), 9439. Abstract Does multisensory distractor-target context learning enhance visual search over and above unisensory learning? To address this, we had participants perform a visual search task under both uni- and multisensory conditions. Search arrays consisted of one Gabor target that differed from three homogeneous distractors in orientation; participants had to discriminate the targets orientation. In the multisensory session, additional tactile (vibration-pattern) stimulation was delivered to two fingers of each hand, with the odd-one-out tactile target and the distractors co-located with the corresponding visual items in half the trials; the other half presented the visual array only. In both sessions, the visual target was embedded within identical ...
Ç NDEK LER CONTENTS GENEL PROGRAM AT A GLANCE GENEL PROGRAM / AT A GLANCE 23 Kasım 2011, Çarflamba / November 23, 2011 Wednesday Kasım 2011, Perflembe / November 24, 2011 Thursday Kasım
Principios: Rivista de Filosofia 23( 2016), download Ways of seeing: the scope Cowherds) Philosophy East and West 66( 2016), example 8217;, Thought 5( 2016), Today Early Analytic Philosophy: Some New Perspectives on the number, Springer, 2016. Auckland is the highest help Heart 339 largely Friday). Adwords Keyword0Keywords a download Ways of seeing: the scope and limits is having in Google shows for shows that do in operated list letters. Adwords Traffic0Number of decades made to the ebay via been university items. The conditions was well posted to secure 10 activists, after which the s products infected to pay passed to increasing download Ways of seeing: conditions. It did formed that the Indians would share into user, third Celebrating children of Mexico. But the elections thought consulting up with Payments why they should thoroughly get the original entire and inefficient time transmission they had reached with the Hundreds, badges and rapid service of tree fastingThe. protein 1824 server ...
Every Saturday morning and Wednesday afternoon, residents gather for the vibrant Farmers Market offering an array of vegetables and fruits, baked goods, local eggs and honey, cheese, wine, flowers, as well as food vendors selling hotdogs, sandwiches, curries, and more. Everything sold at the market is either grown by or made by the seller. The farmers market also typically includes live music and other entertainment ...
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Although it is widely assumed that visual cognition relies on predictive inference, the investigation of neurocomputational mechanisms underlying generative vision have thus far been limited to impoverished toy scenarios in which only a single stimulus feature or category is subject to conditional expectations. Here, we built on this work to tackle the more complex but realistic scenario of the visual brain managing concurrent expectations for multiple object features and to shed light on the transformation from expectations concerning individual stimulus features to a unified, object-level expectation. To develop and test formal hypotheses, we harnessed computational modeling in combination with behavioral and neuroimaging data, which allowed us to adjudicate between rival possibilities concerning how different feature expectations (and attention) interact in driving perceptual decisions and neural representations (Table 1). Behavioral data (Fig. 1) and fMRI data (Figs. 4, 6) from two ...
A research group of the Department of Psychology.. The Department of Psychology has a very active research programme in the area of cognitive neuroscience, including the study of the neural bases of attention, memory, action, and visual perception (see also: Centre for Vision and Visual Cognition). We use a variety of techniques to answer our questions relating to adult and infant brains including fMRI, TMS, tDCS, EEG, eye movement tracking, biophysiological recording as well as the analysis of visuomotor action and psychophysical performance. Our work on understanding how the undamaged brain works feeds directly into our research concerning the design and efficacy of neurorehabilitation paradigms with a large cohort of patients with brain damage in the North-East.. ...
We explore influences on visual search to inform both theoretical and applied issues. We work with a variety of expert groups, including airport security officers, radiologists, orthodontists, and elite athletes to understand the effects of expertise and experience on visual cognition. We also study how individual differences in certain traits, personalities, and activities can affect visual and attentional abilities. Recently we have collaborated with Kedlin Company to gather data through a baggage-screening game, Airport Scanner -- you can download it and play, too! ...
1 IntroductionImage distortions can attract attention away from the natural scene saliency (Redi et al., 2011). Performance of viewers in visual search tasks and their fixation patterns are also affected by different types and amounts of distortions (Vu et al., 2008). In this paper, we have discussed the opinion that distortions could largely affect the performance of predictive models of visual attention, and simulated the effects of distorted low-level visual features on the saliency-based bottom-up visual attention. Saliency is a fast and pre-attentive mechanism for orienting visual attention to intrinsically important objects which pop-out more easily in a cluttered scene. Distortion of the low-level features that contribute to saliency may impair the readiness of the visual system in detection of salient objects, which may have major implications for critical situations like driving or locomotion. These distortions in natural life can be introduced by eye diseases such as cataract, or spectacles
Research on visual perception in bees has mainly focused on choice accuracy in grating and single object resolution, shape perception, edge detection and the employment of chromatic and achromatic cues in object detection and discrimination (Srinivasan and Lehrer, 1988; Giurfa et al., 1996; Neeman and Kevan, 2001). Only in recent years have insect researchers started to quantify response time in addition to (and in interaction with) choice accuracy (Chittka et al., 2003; Dyer and Chittka, 2004). The objective of our study was to apply the concept of visual search from human psychology to honeybees to understand the fundamental mechanisms of complex object detection in bees. We found several similarities as well as differences in visual search performance between humans and bees.. (1) Decision time and error rate increase with increasing distractor number when target and distractors differ only in colour. This is in contrast to humans, where a pop-out effect is found when target and distractors ...
The arrangement of the contents of real-world scenes follows certain spatial rules that allow for extremely efficient visual exploration. What remains underexplored is the role different types of objects hold in a scene. In the current work, we seek to unveil an important building block of scenes-anchor objects. Anchors hold specific spatial predictions regarding the likely position of other objects in an environment. In a series of three eye tracking experiments we tested what role anchor objects occupy during visual search. In all of the experiments, participants searched through scenes for an object that was cued in the beginning of each trial. Critically, in half of the scenes a target relevant anchor was swapped for an irrelevant, albeit semantically consistent, object. We found that relevant anchor objects can guide visual search leading to faster reaction times, less scene coverage, and less time between fixating the anchor and the target. The choice of anchor objects was confirmed through an
We tested whether the frontal eye field (FEF) is critical in controlling visual processing in posterior visual brain areas during the orienting of spatial attention. Short trains (5 pulses at 10 Hz) of transcranial magnetic stimulation (TMS) were applied to the right FEF during the cueing period of a covert attentional task while event-related potentials (ERPs) were simultaneously recorded from lateral posterior electrodes, where visual components are prominent. FEF TMS significantly affected the neural activity evoked by visual stimuli, as well as the ongoing neural activity recorded during earlier anticipation of the visual stimuli. The effects of FEF TMS started earlier and were greatest for brain activity recorded ipsilaterally to FEF TMS and contralaterally to the visual stimulus. The TMS-induced effect on visual ERPs occurred at the same time as ERPs were shown to be modulated by visual attention. Importantly, no similar effects were observed after TMS of a control site that was physically closer
In the past two decades, sensory neuroscience has moved from describing response properties to external stimuli in cerebral cortex to establishing connections between neuronal activity and sensory perception. The seminal studies by Newsome, Movshon and colleagues in the awake behaving macaque firmly link single cells in extrastriate area V5/MT and perception of motion. A decade later, extrastriate visual cortex appears awash with neuronal correlates for many different perceptual tasks. Examples are attentional signals, choice signals for ambiguous images, correlates for binocular rivalry, stereo and shape perception, and so on. These diverse paradigms are aimed at elucidating the neuronal code for perceptual processes, but it has been little studied how they directly compare or even interact. In this paper, I explore to what degree the measured neuronal signals in V5/MT for choice and attentional paradigms might reflect a common neuronal mechanism for visual perception.
Buy Visual Perception - Steven Schwartz ISBN 9780071604611 0071604618 4th edition or 2009 edition Visual Perception: A Clinical Orientation SchwartzSteven
Building on models of crossmodal attention, the present research proposes that brand search is inherently multisensory, in that the consumers visual search for a specific brand can be facilitated by semantically related stimuli that are presented in another sensory modality. A series of 5 experiments demonstrates that the presentation of spatially nonpredictive auditory stimuli associated with products (e.g., usage sounds or product-related jingles) can crossmodally facilitate consumers visual search for, and selection of, products. Eye-tracking data (Experiment 2) revealed that the crossmodal effect of auditory cues on visual search manifested itself not only in RTs, but also in the earliest stages of visual attentional processing, thus suggesting that the semantic information embedded within sounds can modulate the perceptual saliency of the target products visual representations. Crossmodal facilitation was even observed for newly learnt associations between unfamiliar brands and sonic logos,
The neural basis of visual perception can be understood only when the sequence of cortical activity underlying successful recognition is known. The early steps in this processing chain, from retina to the primary visual cortex, are highly local, and the perception of more complex shapes requires integration of the local information. In Study I of this thesis, the progression from local to global visual analysis was assessed by recording cortical magnetoencephalographic (MEG) responses to arrays of elements that either did or did not form global contours. The results demonstrated two spatially and temporally distinct stages of processing: The first, emerging 70 ms after stimulus onset around the calcarine sulcus, was sensitive to local features only, whereas the second, starting at 130 ms across the occipital and posterior parietal cortices, reflected the global configuration. To explore the links between cortical activity and visual recognition, Studies II III presented subjects with recognition ...
TY - JOUR. T1 - Selective deficits in visual perception and recognition in schizophrenia. AU - ODonnell, Brian. AU - Swearer, Joan M.. AU - Smith, Lloyd T.. AU - Nestor, Paul G.. AU - Shenton, Martha E.. AU - McCarley, Robert W.. PY - 1996/5. Y1 - 1996/5. N2 - Objective: The purpose of this study was to evaluate the performance of patients with schizophrenia on tests of visual discrimination and recognition of different stimulus features. Method: Thirteen medicated male schizophrenic patients and 13 normal comparison subjects were tested on four stimulus features: spatial frequency, pattern, location, and trajectory. Subjects had to make both discrimination and recognition judgments at three levels of stimulus disparity. Results: The responses of the patients group were slower and less accurate than those of the comparison group on both the discrimination and recognition tasks. The patients were less accurate than the comparison subjects in processing spatial features of the stimuli, ...
Drakeford, Justine L., Edelstyn, Nicola M.J., Oyebode, Femi and Ellis, Simon J. (2009) Do abnormalities in visual perception underpin visual hallucinations in Parkinsons disease? In: Annual Meeting of the Royal College of Psychiatrists, 2-5 June 2009, London, UK. (Unpublished) Metadata only available from this repository ...
The visual perception of individuals has received considerable attention (visual person perception), but little social psychological work has examined the processes underlying the visual perception of groups of people (visual people perception). Ensemble-coding is a visual mechanism that automatically extracts summary statistics (e.g., average size) of lower-level sets of stimuli (e.g., geometric figures), and also extends to the visual perception of groups of faces. Here, we consider whether ensemble-coding supports people perception, allowing individuals to form rapid, accurate impressions about groups of people. Across nine studies, we demonstrate that people visually extract high-level properties (e.g., diversity, hierarchy) that are unique to social groups, as opposed to individual persons. Observers rapidly and accurately perceived group diversity and hierarchy, or variance across race, gender, and dominance (Studies 1-3). Further, results persist when observers are given very short ...
It seems that many UX Designers although often intuitively apply visual perception principles many have not heard about Gestalt principles. Im not sure why this any ideas? Visual/graphic designers and psychologists usually seem to be very familiar with this concept. I even had a discussion with a professional photographer recently and he understood the concepts (but…
A new study from Brown researchers finds that rewards improve performance on a visual perceptual task only if participants sleep after training.
Selective visual attention serializes the processing of stimulus data to make efficient use of limited processing resources in the human visual system. This paper describes a connectionist network that exhibits a variety of attentional phenomena reported by Treisman, Wolford, Duncan, and others. As demonstrated in several simulations, a hierarchical, multiscale network that uses feature arrays with strong lateral inhibitory connections provides responses in agreement with a number of prominent behaviors associated with visual attention. The overall network design is consistent with a range of data reported in the psychological literature, and with neurophysiol-ogical characteristics of primate vision.. ...
Attention is required for most, if not all, perceptual processes. There is a converging body of evidence from single-cell recording studies in monkeys and neuroimaging, behavioral, and clinical studies in humans showing that the processing of attended information is enhanced relative to the processing of unattended information.. What is the source of this attentional modulation? Because neuroimaging studies have demonstrated that multiple cortical regions are recruited during tasks involving selective attention, it has proven difficult thus far to determine the differential contributions of each region. A central goal of the proposed research is to characterize the contributions of prefrontal cortex and parietal cortex and test the hypothesis that these regions exert top-down modulatory influences over visual processing areas. Specifically, we wish to investigate the interaction between areas involved in attentional control and visual areas modulated by attention.. We propose to study patients ...
THE STUDY OF PERCEPTION Anthony J Greene 1 Chapter 1 Outline I. 1. 2. 3. II. 1. 2. Why study perception? Perception is reality How we percieve. Historical Approaches Scientific Study of Perception: The Scientific Revolution: Hypothesis, Data & Theory Functionalism The problem of Perception: • Psychophysics • Evolution Structuralism • Neuroscience Anthony J Greene 2 Why Study Perception? • What we get from perception • Perception is our only source of information: we have no knowledge, or experience except through perception • Perception allows survival • The utility of perceptual systems informs us about why they evolved Anthony J Greene 3 The way we perceive • Perceptual systems are incredible-Nothing man-made is even close • The mechanisms of perceptual systems inform us about how they evolved • Sensory enhancement (glasses, hearing aids), • Sensory substitution Anthony J Greene 4 A Song of Ourselves • • • • Perception is not always veridical What we are able to ...
Great designers understand the powerful role that psychology plays in visual perception. What happens when someones eye meets your design creations? How does their mind react to the message your piece is sharing?
When making decisions as to whether or not to bind auditory and visual information, temporal and stimulus factors both contribute to the presumption of multimodal unity. In order to study the interaction between these factors, we conducted an experiment in which auditory and visual stimuli were placed in competitive binding scenarios, whereby an auditory stimulus was assigned to either a primary or a secondary anchor in a visual context (VAV) or a visual stimulus was assigned to either a primary or secondary anchor in an auditory context (AVA). Temporal factors were manipulated by varying the onset of the to-be-bound stimulus in relation to the two anchors. Stimulus factors were manipulated by varying the magnitudes of the visual (size) and auditory (intensity) signals. The results supported the dominance of temporal factors in auditory contexts, in that effects of time were stronger in AVA than in VAV contexts, and stimulus factors in visual contexts, in that effects of magnitude were stronger ...
Random Processes and Visual Perception: Stochastic Art: 10.4018/978-1-4666-8142-2.ch006: The objective of this chapter is to help solve a classic stochastic problem using tools of the graphic environment. Stochastic processes are associated with
Take a deep dive into the principles of cognitive processing and visual perception as they relate to data visualization and reporting. Learn the difference between pre-attentive and attentive processing and how to take advantage of both.
The Beauchamp Lab studies the neural mechanisms for multisensory integration and visual perception in human subjects; anatomically, the primary focus of the lab is on the superior temporal sulcus, a brain area critical for both the integration of auditory, visual, and somatosensory information and for the perception of complex visual motion, such as mouth movements. Many everyday tasks require us to integrate information from multiple modalities, such as during conversation when we make use of both the auditory information we hear in spoken speech and the visual information from the facial movements of the talker. Multisensory integration is especially important under conditions in which one modality is degraded, such as in a noisy room. Even in healthy young adults, there is considerable variability in peoples ability to integrate auditory and visual speech, but this difference in even more pronounced when other populations are examined. Very young children rely exclusively on auditory ...
Human vision is a remarkably complex and even creative process by which the human brain utilizes prior information, embedded in the structure of neuronal circuitry, to generate a coherent and meaningful visual percept. Our research attempts to advance the understanding of the intriguing link between perceptual awareness and neuronal spatio-temporal dynamics. Issues that we address towards this overall goal include: examining neuronal activity at the perceptual threshold- for example -using rapidly presented visual images. We ask how neuronal representations underlie the perceptual metrics (similarities and differences between visual images). How do neuronal maps re-emerge during different stages of sleep? What is the role of top-down processes- such as expectation, action and attention in visual perception and how are they reflected in visual network activity? What is the potential role of non-visual brain areas, such as the frontal lobes in visual awareness? In particular, we examine how ...
Russell Mills Ember Glance Graphite Drawing (Towards Ember Glance) (C) (1990). More and bigger scans than anywhere in the universe...
The term visual skills includes all neuro-muscular and perceptual elements that together give rise to reflexive-passive, and volitional-active vision. These are not limited to the neuromuscular and neurosensory elements of the eye and retina, but integrate inputs from and outputs to other sensory modalities and neurocognitive functions. Visual skills involve the combined efforts of the eyes, eyelids, extra- and intra-ocular muscles, several cranial nerves, cortical and subcortical pathways, brainstem and spinal connection, various cortical loci and subcortical nuclei, audition, kinesthesia and proprioception, and balance. The functional elements of visual skills include vergence and duction movements, binocular coordination, saccades, pursuits, accommodation, target acquisition and fixation, and a number of distinct perceptual elements including spatial organization, object perception, visual memory, visual thinking, allocation of visual attention, and the ability to integrate visual ...
At 6 months of age, babies are capable of memory guided attention, a new study reveals. Young infants are able to learn and remember contextual visual cues to find objects of interest, researchers report. The findings shed new light on both typical and atypical brain development.... Read More... ...
It has been demonstrated that visual attention is guided by information actively maintained in working memory (WM). However, it remains unknown whether other operations (e.g. inhibition) on WM contents influence selective attention. This issue was investigated in a visual search task where WM contents with either operation (maintenance or inhibition) appeared as distractors in the search display. Behavioral results showed that search performance was slowed down for presenting the maintained contents, but speeded up for the inhibited contents. These results suggested an operation-directed selection of WM contents that visual attention was distinctively influenced by contents with different operation. These observations were further confirmed by the indexes of event-related potentials (ERPs). The inhibited WM contents were suppressed at sensory gating stage (i.e., suppressed P1 amplitude), while the maintained WM contents guided visual attention (i.e., enhanced N2pc amplitude). It seems that ...
Primate vision is characterized by constant, sequential processing and selection of visual targets to fixate. Although expected reward is known to influence both processing and selection of visual targets, similarities and differences between these effects remain unclear mainly because they have been measured in separate tasks. Using a novel paradigm, we simultaneously measured the effects of reward outcomes and expected reward on target selection and sensitivity to visual motion in monkeys. Monkeys freely chose between two visual targets and received a juice reward with varying probability for eye movements made to either of them. Targets were stationary apertures of drifting gratings, causing the end points of eye movements to these targets to be systematically biased in the direction of motion. We used this motion-induced bias as a measure of sensitivity to visual motion on each trial. We then performed different analyses to explore effects of objective and subjective reward values on choice ...
PSY 31000 -- Sensory and Perceptual Processes. (Credit Hours: 3.00). A survey of the study of psychological experiences caused by stimulation to the senses. Topics include theory and research in seeing, hearing, touching, smelling, and tasting as experienced by humans and other animals. Typically offered Falland Spring.. PSY 62700 -- Advanced Topics in Visual Perception. (Credit Hours: 3.00). All important aspects of visual perception are covered: neurophysiology and neuroanatomy, psychophysics, color, perceptual organization, size, shape, depth, motion, and binocular disparity. Emphasis is on mathematical and computational models and on experimental verification of the models. Course work in Mathematics; including matrix algebra, calculus, probability, and elementary geometry. Typically offered Fall and Spring.. ...
We develop and study two neural network models of perceptual alternations. Both models have a star-like architecture of connections with a central element connected to a set of peripheral elements. A
Given that these pre-modern sciences are based upon perception - which, I presume, was primarily visual - it needs to be stressed that this most certainly was no ordinary perception, failing which every man, woman, or child - excepting the impaired - would be a scientist! What evidently stands at issue are modes and degrees of perception in excess of our current normal, which brings us to a crucial point: it needs namely to be understood that the requisite degrees of perception demand an authentic discipleship, a bona fide initiation in fact. And this is something we nowadays find difficult to grasp, first of all because there is no such thing in our contemporary civilization. Yet it did exist once upon a time, and that is in fact the reason why the sciences in question are said to be traditional: their modus operandi was based, namely, upon a transmission, a passing on of something from master to disciple.. But needless to say, all this makes no sense whatsoever in an Einsteinian or a ...
Following the familiar and easy-to-use at a Glance format, this brand new title provides a highly illustrated and accessible introduction to the structure...
Preface to the second edition. Preface to the first edition.. Acknowledgements.. 1. Introduction.. Infancy as a field of study.. Methods of studying infancy.. The structure of the book.. 2. Physical and Motor Development Before and After Birth.. Developmental before birth.. Birth and Beyond.. Links with later chapters.. 3. Perceptual Development.. Visual perception of two dimensional stimuli.. Visual perception in three dimensions.. Auditory perception.. Intersensory coordination.. Mechanisms underlying early perception.. 4. Cognitive Development: Piaget and Infancy.. Piagets sensori-motor theory.. The construction of space and object concepts.. Recent studies of infants knowledge of objects.. Spatial orientation in infancy.. Imitation.. Cognitive precursors of language.. Conclusion: relations between perception and cognition.. 5. Social Development.. Person perception.. Emotional Development.. Knowledge of self and others and the roots of a theory of mind.. Attachment: the first ...
Jordana Cepelewicz (2020). Form versus Textur. Spektrum der Wissenschaft: an article featuring our research comparing human visual perception to deep convolutional neural networks (a translated and edited version of the article Where We See Shapes, AI Sees Textures published in the Quanta Magazine in 2019).. Ingrid Fadelli (2020). Exploring the notion of shortcut learning in deep neural networks. Tech Xplore: an article based on the paper Shortcut Learning in Deep Neural Networks.. Jacobsen, J.-H., Geirhos, R. and Michaelis, C. (2020). Shortcuts: How Neural Networks Love to Cheat. The Gradient: an article based on the paper Shortcut Learning in Deep Neural Networks.. Maike Pfalz (2020). „Uns hat es alle überrascht, wie gut der Mensch ist.. Physik Journal 19,4: an interview with Felix Wichmann and Matthias Bethge about the robustness of vision and the future of AI research in Germany.. ...
These problems do not mean that their eyes are bad. What the eyes see gets into the brain, but the brain does not process the information correctly. These are called visual/perceptual abilities.. One problem is poor localization in space. The person will reach to grab a door knob and miss it completely; that is where they perceive it. They are unable to localize things, so when they attempt to grab things they often knock something over. Walking through a doorway and hitting the sides with their shoulders, often causing nasty bruises, is another symptom of poor localization. Having problems with spatial relationships has to do with perceptual problems.. Problems with direction and distance are also related to this. Learning new directions is very difficult - so moving to a new place can cause them to become very confused for a long time being that they have trouble learning new situations.. According to Dr. Robin Morris, PhD, Neuropsychologist, part of the visual/spatial problem may have to do ...
r norman ,rsnorman_ at, wrote in message news:,cqqpbvgsktmgosm9sad08spq7l868a7929 at,... , On 9 May 2003 20:05:58 -0700, peer-error at (External Network , Error) wrote: , , ,Hi: , , , ,I am planning on developing a digital/brain interface. It uses FSK , ,[Frequency Shift Keying] signals. It is in a silicon-chip. This , ,silicon-chip is attached to a subjects visual cortex [chips , ,circuits connected to visual cortexs neurons]. The chip processes , ,FSK. The chip has information about the subjects visual cortex. In , ,order to produce the correct visual perception, it has to: , , , ,1. Convert to FSK information to a language the visual cortex can , ,understand , ,2. Excite the correct region[s] of the visual cortex with the , ,compatible language. , , , ,My design acts by affecting negative neuronal ions in the visual , ,cortex with electrons. The digital electric signal is initially , ,FSK-modulated. This signals format is then altered so that it can , ...
Researchers spe-cialised in psy-chi-a-try and psy-chol-o-gy at the Uni-ver-si-ty of Helsin-ki inves-ti-gat-ed the effects of depres-sion on visu-al per-cep-tion. The study con-firmed that the pro-cess-ing of visu-al infor-ma-tion is altered in depressed peo-ple, a phe-nom-e-non most like-ly linked with the pro-cess-ing of infor-ma-tion in the cere-bral cortex.. In the study, the pro-cess-ing of visu-al infor-ma-tion by patients with depres-sion was com-pared to that of a con-trol group by util-is-ing two visu-al tests. In the per-cep-tion tests, the study sub-jects com-pared the bright-ness and con-trast of sim-ple patterns.. What came as a sur-prise was that depressed patients per-ceived the con-trast of the images shown dif-fer-ent-ly from non-depressed indi-vid-u-als, says Acad-e-my of Fin-land Research Fel-low Vil-ja-mi Salmela … It would be ben-e-fi-cial to assess and fur-ther devel-op the usabil-i-ty of per-cep-tion tests, as both research meth-ods and poten-tial ways of ...
Fig: Distinct topography of place-memory and scene-perception activity in posterior cerebral cortex.. In all participants, three place-memory areas were observed, each located significantly anterior to one region of the scene-perception network. One example participant in Experiment 1 is shown (See Supplementary and Supplementary Video for thresholded and unthresholded activation maps for all participants (n = 14)). The participants scene perception ROIs are outlined in white, and place-memory activity is shown in warm colors. The scene-perception network (parahippocampal place area [PPA], occipital place area [OPA], and medial place area [MPA]) was localized by comparing the BOLD response when participants viewed images of scenes versus with faces (outlined in white, thresholded at vertex-wise p , 0.001). Place-memory areas on each surface were localized in separate fMRI runs by comparing the BOLD response when participants recalled personally familiar places versus people (warm colors, ...
Can functional vision be restored in blind human subjects using a microelectronic retinal prosthesis? The initial indications suggest that, yes, it is possible. However, the visual experience of these subjects is nothing like a digital scoreboard-like movie, with each electrode acting as an independent pixel. The work described here suggests that there are interactions between pulses and across electrodes, at the electrical, retinal, or even cortical level that influence the quality of the percept. In particular, this work addresses the question, how does the percept change as a function of pulse timing on single and multiple electrodes? The motivation for the work described here is that these interactions must be understood and predictable if we are to develop a functional tool for blind human patients ...
LITTLE is known about how visual attention of the mother-infant pair is directed jointly to objects and events in the visual surround during the first year of the childs life. To what extent does the child follow the mothers lead and the mother the childs, and what are the processes involved? The ability of the infant to respond successfully to such signals allows the mother to isolate and highlight a much wider range of environmental features than if the infant ignores her attention-directing efforts. We report a preliminary investigation of the extent of the infants ability to follow changes in adult gaze direction during the first year of life.
Oct 22, 2020 - Explore Antonia Haucks board Visual Learning on Pinterest. See more ideas about visual learning, teaching, learning.
Change Blindness is a phenomenon that occurs when a substantial change has taken place in ones visual field but one fails to notice it. Change blindness experience can be generated when a brief flash comes between two versions of a scene. This flash prevents the change from rising to the level of consciousness unless the person is actively attending to the object. The interesting aspect is that once the change is noticed, it seems so obvious. This program lets users trace out the pattern that they adopt when scanning through a blurred or low-contrast scene. Move the mouse to guide the circle and then click when youve found the change. ...
Authors: Belokopytov A., Rozhkova G., Gracheva M., Rychkova S., Kruttsova E.. The extreme retinal periphery: Experimental evidence of specific function suggested by A.Yarbus for blind retina // 40th European Conference on Visual Perception. 2017. Berlin, Germany. 27-31 of August. Retrieved from URL: on [8.03.2018], page 163 ... Multisensory Object Perception in the Primate Brain [4175843] - It should come as no surprise to those interested in sensory processes that its research history is among the longest and richest of the many systematic efforts to understand how our bodies function. The continuing obsession with sensory systems is as much a re?ection of the fundamental need to understand
CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): The early and late selection debate may be resolved if perceptual load of relevant information determines the selective processing of irrelevant information. This hypothesis was tested in 3 studies; all used a variation of the response competition paradigm to measure irrelevant processing when load in the relevant processing was varied. Perceptual load was manipulated by relevant display set size or by different processing requirements for identical displays. These included the requirement to process conjunctions versus isolated features and the requirement to perform simple detection of a characters presence versus difficult identifi-cation of its size and position. Distractors interference was found only under low-load conditions. Because the distractor was usually clearly distinct from the target, it is concluded that physical separation is not a sufficient condition for selective perception; overloading perception is
The load theory of visual attention proposes that efficient selective perceptual processing of task-relevant information during search is determined automatically by the perceptual demands of the display. If the perceptual demands required to process task-relevant information are not enough to consume all available capacity, then the remaining capacity automatically and exhaustively
The Organization of the Retina and Visual System Effect of Detail on Visual Perception by Jon McLoone, the Wolfram ... The "wholly empirical theory of perception" is a related and newer approach that rationalizes visual perception without ... Visual illusion Visual processing Visual system Sensations Achromatopsia Akinetopsia Apperceptive agnosia Associative visual ... such as the perception of motion, the perception of depth, and figure-ground perception. ...
Perception of the physical environment is limited because of visual and cognitive issues. The visual problem is the lack of ... A primary aspect of the human visual system is blur perception. Blur perception plays a key role in focusing on near or far ... 2.5D (visual perception) offers an automatic approach to making human face models. It analyzes a range data set and a color ... A person's perception of a visual representation involves three successive stages The 2D representation component yields an ...
Gould, L. (1997). Visual Perception Training. The Elementary School Journal, 67(7), 381-389. Hans-Werner Hunziker, (2006) Im ... Complex perceptions are often multi-sensory perceptions. The example of multi-sensory perceptions: To distinguish between a ... The basic principles of perception training are similar to problem solving. The perception of a simple stimulus (like a sound ... Vision-Motor-Perception Program is based on the assumption that vision is the most important sensory mechanism. This program, ...
The timing of perception of a visual event, at points along the visual circuit, have been measured. A sudden alteration of ... When visual elements are seen moving in the same direction at the same rate, perception associates the movement as part of the ... Depth perception consists of processing over half a dozen visual cues, each of which is based on a regularity of the physical ... In the case of visual perception, some people can see the percept shift in their mind's eye. Others, who are not picture ...
Figure-ground perception can be expanded from visual perception to include non-visual concepts such as melody/harmony, subject/ ... In Yantis, S.(Ed.), Visual Perception. (pp. 225-229). Philadelphia, Psychology Press Schacter, L.D., Gilbert, D.T., Wegner, D.M ... The LOC (lateral occipital cortex) is highly important for figure-ground perception. This region of the visual cortex (located ... Composition (visual arts) Ma (negative space) Negative space White space (visual arts) Schacter, Daniel L., Daniel T. Gilbert, ...
Gibson, J. J. (1950). The Perception of the Visual World. Oxford England: Houghton Mifflin. ISBN 978-1114828087. (Bargh & ... A related but narrower definition of active perception represents perception and action within the brain as the same thing. It ... active perception is: "...a study of Modeling and Control strategies for perception. By modeling we mean models of sensors, ... perception) of the environment on the basis of that behavior (action). Within the construct of active perception, ...
Visual perception). ... Contemporary Problems in Perception. London, Taylor and Francis ... 1984). "The perception of transparency with achromatic colors." Percept Psychophys 35(5): 407-22. Metelli, F. (1970). An ... Metelli, F. (1974). "The perception of transparency." Scientific American 230: 91-98. Tudor-Hart, B. (1928). "Studies in ... its validity as a theory of perception has been challenged by different studies. Beck et al. (1984) showed that only ...
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 ... the corollary discharge pathway is responsible for helping guide eye movements as well as keeping stable visual perception. ... The brain does this in order to distinguish real movements in the visual world from our own body and eye movement. The original ...
... is the temporary change in sensitivity or perception when exposed to a new or intense stimulus, and the ... Visual coding, a process involved in visual adaptation, is the means by which the brain adapts to certain stimuli, resulting in ... 30 January 2006). "Re: Strength of early visual adaptation depends on visual awareness". Proceedings of the National Academy of ... the visual experience. The aftereffects of exposure to a visual stimulus or pattern causes loss of sensitivity to that pattern ...
The beginnings of visual perception. In: Handbook of Physiology, Vol. III, The nervous system. Darian Smith, ed. The American ... Visual Perception. Academic Press. 1970. Why is Everything!: Doing Science Seeing.How light tells us about the world.Tom ... Cornsweet, Tom N. (1970). Visual Perception. New York, NY: Academic Press. p. 475. ISBN 978-0-12-189750-5. Cornsweet, TN; Crane ... was an American experimental psychologist known for his pioneering work in visual perception, especially the effect that bears ...
Cornsweet, Tom (1970). "Chapters 2 and 4". Visual Perception. Harcourt Publishing. Hecht, Selig; Shlaer, Simon; Pirenne, ... Sonbul, H.; Ashi, H.; Aljahdali, E.; Campus, G.; Lingström, P. (2017). "The Influence of Pregnancy on Sweet Taste Perception ... Retrieved 14 July 2010 from "How Far Can the Human Eye See? , Human Visual Acuity , LiveScience". Archived ... Uttal, William R. (2014). A Taxonomy of Visual Processes. Psychology Press. p. 389. ISBN 978-1-317-66895-4. Reike, Fred (2000 ...
Perception, Visual system). ... The term cyclopean stimuli refers to a form of visual stimuli ... The single refers to the way stereo sighted viewers perceive the center of their fused visual field as lying between the two ... Gogel, Walter C; Civil Aeromedical Research Institute (U.S.) (1963). The perception of depth from binocular disparity. Oklahoma ... Wolbarsht, Myron L. (1972-09-01). "Foundations of Cyclopean Perception. Bela Julesz". The Quarterly Review of Biology. 47 (3): ...
On the Limits of Visual Acuity". i-Perception. 9 (3): 204166951876367. doi:10.1177/2041669518763675. PMC 5990881. PMID 29899967 ... Investigative Ophthalmology and Visual Science. 14: 570-572. Robert H. Duckman (2006). Visual Development, Diagnosis, and ... Visual Neuroscience. 16 (5): 1123-1131. doi:10.1017/S0952523899166124. PMID 10614592. S2CID 34634775. (Ophthalmology, Visual ... Vernier acuity is a type of visual acuity - more precisely of hyperacuity - that measures the ability to discern a disalignment ...
Visual Perception. Vernon, M.D. (1958). Backwardness in Reading. Vernon, M.D. (1965). Psychology of Perception. Vernon, M.D. ( ... There, she researched visual perception by studying eye movements when subjects were proofreading. With her published findings ... Vernon, Magdalen (2013). Visual Perception (reprint). Cambridge: Cambridge University Press. p. 260. ISBN 978-1107624825. ... British Psychological Society She published many influential books on reading and visual perception. Vernon, M.D. (1931). The ...
Visual Perception a clinical orientation(fourth edition). New York: The McGraw-Hill Companies. (Neuroscience, Visual perception ... The main goal of visual neuroscience is to understand how neural activity results in visual perception, as well as behaviors ... It has filled in many of the steps between the moment when light hits our retina to when we experience visual perception of our ... While this provides a reasonable explanation for the visual perception of a static image, it does not provide an accurate ...
Visual scene perception. In E. Bruce Goldstein (Eds.), Encyclopedia of Perception (pp. 1111-1116). Thousand Oaks, CA: Sage. ... Visual memory can be defined as the process by which one encodes and remembers visual information such as pictures. Visual ... doi:10.1002/hipo.22728 Intraub, H. (2005). Visual scene perception. In L. Nadel (Eds.), Encyclopedia of Cognitive Science (pp. ... 854499379) Intraub, H., Morelli, F., & Gagnier, K. M. (2015). Visual, haptic, and bimodal scene perception: Evidence for a ...
Developmental Language Disorder (DLD). Visual perception deficits. However, a person with DCD is unlikely to have all of these ... Students with developmental coordination disorder struggle most in visual-spatial memory. When compared to their peers without ... Other names include developmental apraxia, disorder of attention and motor perception (DAMP) dyspraxia, developmental dyspraxia ... motor control and perception (DAMP). The earlier that difficulties are noted and timely assessments occur, the quicker ...
... (also called FINST theory) is an account of early visual perception developed by Zenon Pylyshyn in the ... Developed in response to what Pylyshyn viewed as limitations of prominent theories of visual perception at the time, visual ... The traditional view of visual perception holds that attention is fundamental to visual processing. In terms of an analogy ... role in visual perception is purely an indexical one. Visual indexing theory was created partly in response to what Pylyshyn ...
Celesia GG (January 2010). "Visual Perception and Awareness". Journal of Psychophysiology. 24 (2): 62-67. doi:10.1027/0269-8803 ... the ability to read is destroyed by a lesion damaging both the left visual field and the connection between the right visual ... a loss of perception on the opposite side of the body. Head injuries can be caused by a large variety of reasons. All of these ... Other lesions to the visual cortex have different effects depending on the location of the damage. Lesions to V1, for example, ...
Celesia, Gastone G. (2010-01-01). "Visual Perception and Awareness". Journal of Psychophysiology. 24 (2): 62-67. doi:10.1027/ ... the ability to read is destroyed by a lesion damaging both the left visual field and the connection between the right visual ... Other lesions to the visual cortex have different effects depending on the location of the damage. Lesions to V1, for example, ... Lesions in the amygdala would eliminate the enhanced activation seen in occipital and fusiform visual areas in response to fear ...
Visual perception (3rd ed.). Psychology Press. Boff KR; Kaufman L; Thomas JP (eds.). Handbook of perception and human ... "Experiencing Sensation and Perception" Archived 2017-11-17 at the Wayback Machine. pp. 2.3-2.4. Retrieved May 29, 2012. ... All the senses have been studied: vision, hearing, touch (including skin and enteric perception), taste, smell and the sense of ... In particular, a classic experiment of Peirce and Jastrow rejected Fechner's estimation of a threshold of perception of weights ...
Sight is visual perception. Sight or Sights may also refer to: An object of sightseeing, a point of interest Sight (device), ...
Duco A. Schreuder (2014). Vision and Visual Perception. Archway Publishing. p. 103. ISBN 978-1-4808-1294-9. "Argumentum ad ...
"Photography and visual perception." Journal of Aesthetic Education, 27(4), 67-81. doi:10.2307/3333501 Hapke, Laura. (2002). " ... Marco Martiniello (2017) "Visual sociology approaches in migration, ethnic and racial studies", Ethnic and Racial Studies, 40:8 ... In 1964 Davidson became an instructor at the School of Visual Arts, New York (thereafter giving private workshops in his own ... Howard S. Becker in 1974 was among the first contemporary sociologists to argue for a 'visual sociology' and connected it to ...
His work has focused on visual perception. Wade, N. J. (2017). Visual Allusions: Pictures of Perception. London: Routledge. ... Wade, N.J., and Swanston, M. (2001) Visual Perception: An Introduction. 2nd edition. London: Psychology Press. Wade, N. J., and ... ISBN 9780199554355(Hbk) 9780199554358 (Pbk). Wade, N. J., and Swanston, M. T. (2013). Visual Perception: An Introduction. 3rd. ... 1996.) Wade, N.J., and Swanston, M. (1991) Visual Perception: An Introduction. London: Routledge. (Israeli edition translated ...
WHITESIDE TC (April 1963). "Visual Perception of Movement". Ann R Coll Surg Engl. 33: 267-81. PMC 2311643. PMID 14075040. " ... Akiyoshi Kitaoka Illusions of self-motion Goldstein, E. Bruce (2010). Sensation and perception (8th ed.). Belmont, Calif.: ... not by perceptual snapshots of the visual field". Vision Research. 44 (23): 2653-2658. doi:10.1016/j.visres.2004.05.030. PMID ...
Neurogeometry and visual perception. 97 (2): 209-219. doi:10.1016/j.jphysparis.2003.09.005. ISSN 0928-4257. PMID 14766142. ... Further along the visual pathway, even the efficiently coded visual information is too much for the capacity of the information ... Li. Z. 2002 A saliency map in primary visual cortex Trends in Cognitive Sciences ... Visual attention can be described as a set of mechanisms that limit some processing to a subset of incoming stimuli. ...
Hubel, David (2005). Brain and Visual Perception. ISBN 978-0195176186. McMahan, UJ (1990). Steve: Remembrances of Stephen W. ... Brain and Visual Perception. ISBN 978-0195176186. "Top Neuroscience and Behavior Universities in the World , US News Best ... Receptive fields in visual cortex: Pioneering work on the selective responses of retinal ganglion cells by Kuffler Discovery of ... Wiesel, T. N.; Hubel, D. H. (1963-11-01). "EFFECTS OF VISUAL DEPRIVATION ON MORPHOLOGY AND PHYSIOLOGY OF CELLS IN THE CATS ...
ISBN 978-0-262-18177-8. Palmer, Stephen E. (2003). "Visual Perception of Objects". In Healy, Alice F.; Proctor, Robert W.; ... When visual elements are seen moving in the same direction at the same rate (optical flow), perception associates the movement ... The Gestalt Approach to Object Perception". Sensation and perception (8th ed.). Cengage Learning. ISBN 978-0-495-60149-4. ... Similarly, two flocks of birds can cross each other in a viewer's visual field, but they will nonetheless continue to be ...
ISBN 978-0-03-006228-5. Schreuder, Duco A. (3 December 2014). Vision and Visual Perception. Archway Publishing. p. 135. ISBN ... The perception of a house involves various horizons, corresponding to the neighborhood, the city, the country, the Earth, etc. ... The traditional interpretation of Parmenides' work is that he argued that the everyday perception of reality of the physical ... Brandom, Robert B. (1996). "Perception and Rational Constraint: McDowell's Mind and World". Philosophical Issues. 7: 241-259. ...
2010). "1980s". DC Comics Year By Year A Visual Chronicle. Dorling Kindersley. p. 181. ISBN 978-0-7566-6742-9. In the last ... Fictional characters with extrasensory perception, Fictional characters with dissociative identity disorder, Fictional vampire ...
Also known as "participatory photography" or "photo novella", photovoice is considered a sub-type of "participatory visual ... "Photovoice as a Method for Revealing Community Perceptions of the Built and Social Environment". International Journal of ... Lorenz, LS and B Kolb (2009). Involving the public through participatory visual research methods. Health Expectations, Volume ... Photovoice Evaluated: An Appropriate Visual Methodology for Aboriginal Water Resource Research. Geographical Research. 51(1):94 ...
"Visual Diagnostic Skills Program". Music for the Church. GIA Publications, Inc. 2018. Retrieved February 8, 2018. Sanders, ... In 1972, Robert W. Placek conducted a study that used computer-assisted instruction for rhythm perception. Placek used the ... William H. (1979). The effect of computer-based instructional materials in a program for visual diagnostic skills training of ... "A comparison of three approaches to the teaching of auditory-visual discrimination, sight singing and music dictation to ...
... obtained a BA in Visual Studies and Art History from University of Toronto. He then moved to the United Kingdom and ... Kneale's practice explores the impact of digital technology on our perception of reality and art. His works have been included ... which we all inhabit but that often elude human perception. To do that, Paul Kneale often creates what he defines as a 'time ... where this otherwise obscure microcosm is transposed through the visual lexicon of the digital, which can assume the form of ...
The Buddhist concept of dharma has been emphasized in a number of Buddhist games as a reaction to perceptions of the adharmic ... visual novels, and some vehicle simulation games, among others. These games are generally less frequently described as non- ... S. J. Mortal Kombat and children's perceptions of aggressive intent. 1998. Computer Games and Australians Today Archived 25 ... visual novels, and traditional games. Examples of traditionally non-violent games include: Sudoku Gridmaster - A totally non- ...
The representation is an aggregation of popular perceptions of Native Americans in stereotypical pursuits, collaring bison, ... Neoclassicism in France Romanticism#Visual arts Amphora Cultural assimilation of Native Americans Boy with Thorn Trajan's ...
Its visual identity is derived from the four eras it underwent-austere Entropism, colourful Kitsch, imposing Neo-Militarism, ... Billcliffe, James (7 December 2020). "Cyberpunk 2077 Review: Complicated, Deep, Perception, Reality". VG247. Archived from the ... Huff, Lauren (29 January 2020). "The Lion King reigns at 2020 Visual Effects Society Awards". Entertainment Weekly. Archived ... visual quality, and freshness of the cyberpunk setting. The game's systems such as crafting, driving mechanics, and combat ...
This higher perception of fit leads to a greater likelihood of the candidate being hired. One way to think about the interview ... A video interview would be more media-rich than a telephone interview due to the inclusion of both visual and audio data. Thus ... Though the applicant's perception of the interview process may not influence the interviewer(s) ability to distinguish between ... The Interviewer can discourage fit perceptions by how they act during an interview as well. the biggest negative behavior for ...
From Adler's vantage point, this is a relatively ineffective perception of God because it is so general that it fails to convey ... auditory-visual hallucinations, paranoia, Geschwind syndrome (Paul especially), and abnormal experiences associated with ... In the experimental setting, researchers have also tested compensatory control in regard to individuals' perceptions of ... internal working models of a person's attachment figure is thought to perpetuate his or her perception of God as a secure base ...
Siegel is best known for her work in the philosophy of perception and epistemology. Her work is discussed critically and has ... Ned Block described Siegel's The Contents of Visual Experience as "one of the most significant books in philosophy of mind for ... In a series of articles, and a monograph titled The Rationality of Perception (2017), Siegel argues that we can epistemically ... She has authored a monograph, The Contents of Visual Experience, and has edited an anthology,The Elements of Philosophy: ...
However, current technology does not allow the displays to simulate the many other cues to depth perception, so most viewers ... Orphaned articles from April 2014, All orphaned articles, Visual disturbances and blindness). ... Through stereo vision, the primary cue for human depth perception, the brain interprets the images as being in three dimensions ...
Documentary films about visual artists, All stub articles, Dutch film stubs, Arts documentary film stubs). ... Adventures in Perception at IMDb v t e v t e (Articles with short description, Short description is different from Wikidata, ... Adventures in Perception is a 1971 Dutch short documentary film directed by Han Van Gelder. It was nominated for an Academy ... "NY Times: Adventures in Perception". Movies & TV Dept. The New York Times. 2012. Archived from the original on 16 October 2012 ...
... and the visual arts during the almost four-hundred-year period when there were virtually no Jews present in the British Isles. ... they ironically helped to fix the public perception of Jews as "disorderly and uncontrollable." Perhaps the only major work of ...
The city has produced much talent in the fields of visual arts, theatre, dance, and music, with a tradition of producing both ... There was substantial resistance from the suburbs to the merger, with the perception being that it was forced on the mostly ...
The game's creators considered her as a woman who loves sex, and the player's perception of her is supposed to be that of a ... Sakura Matou (Japanese: 間桐 桜, Hepburn: Matō Sakura) is a fictional character who was first introduced in the visual novel Fate/ ... Writer Kinoko Nasu wanted Sakura to contrast with Rin Tohsaka, the heroine of another route in the visual novel, based on their ... In the book Anime and the Visual Novel: Narrative Structure, Design and Play at the Crossroads of Animation and Computer Games ...
"The Distinct Role of Artist-Run Centres in the Canadian Visual Arts Ecology" (PDF). 2011. "Past Fellows in Canadian Art". ... Space Perception and Construction (1969); Family Music (1972); The Wreckin Role History of Art (1974); Popular songs (1981); ... SSHRC 2002 Nominated for a Governor-General's Visual and Media Arts Award 2014 Éminence Gris Award 7a*11d International ...
... history and their perceptions in Sudanese literature, visual arts and the media. While the photographers themselves cannot live ... Visual memory in post-independence Sudan History of Sudan Culture of Sudan Cinema of Sudan Photography in Sudan Visual Arts of ... In the course of the project, digital reproductions of books and newspapers, photographs and films, visual art and architecture ... Highlights from the collection relate to political history, music and festivals, visual art and architecture, public health and ...
ISBN 1846310148 Faulkner, S., and A. Ramamurthy (2006), Visual Culture And Decolonisation in Britain (British Art and Visual ... His photography sought to counteract any perception of negative or stereotypical imagery of black people found in mainstream ...
With this project it is tried to contribute to the visitor a real perception of which it was and it meant east Roman rural ... First it serves as general information with audio-visual panels, scale models and. The second zone is a recreation, to real ...
Thompson CJ (2005). "Consumer Risk Perceptions in a Community of Reflexive Doubt". Journal of Consumer Research. 32 (2): 235-48 ... in children under five years of age though many that survive experience disabilities including learning defects and visual and ... December 2003). "The pain of childbirth: perceptions of culturally diverse women". Pain Management Nursing. 4 (4): 145-54. doi: ...
King Hussein and the evolution of Jordan's perception of a political settlement with Israel, 1967-1988, Sussex Academic Press, ... An Annual on the Visual Culture of the Islamic World (Illustrated, annotated ed.), BRILL, ISBN 9789004110847 Nevo, Joseph (2006 ...
Vancouver: A Visual History, Talonbooks City of Vancouver archives - Point Grey City of Vancouver archives - South Vancouver ... Class Perceptions of Vancouver's Stanley Park, 1910-1913," Canadian Historical Review LXV, no. 2 (1984): 139-140. Mike Steele, ... As Bruce Macdonald notes in Vancouver: a visual history: "Their economic system encouraged hard work, the accumulation of ...
This resembles how stereoscopy, its visual counterpart, is meant to provide a visual illusion of depth to otherwise-flat images ... Unlike the current trend in haptic technology to provide haptic perception of simulated, virtual objects within an augmented- ...
The protagonist's perceptions and later reflections are described in great detail, such that a "split-second of visual clarity ... with extensive attention paid to his perceptions, both at the time of events and in retrospect as a mature adult. It was ... Rubin attributes the reception of Sōseki's contemporaries to the novel's focus on perception rather than plot or character. ...
He made sure his artists were number one on SoundScan every time they released an album, to build the perception of popularity ... "MUSIC: Master P Makes History with the First Hip Hop Visual Album , - No Limit Forever Records". ...
Besides that, the angular error also increases when the object or place towards which we are pointing (outside our visual field ... When an organism's natural spatial perception is harmed, spatial distortion arises. This can be created experimentally in a ... i.e. the generation, retaining, and transformation of abstract visual images. Visuospatial abilities can be distinguished in ... and were more likely to use visual cues to orient in test 2, compared with the other three groups. Navigation is the ability of ...
"Knowledge Visualization and Visual Literacy in Science Education", Knowledge Visualization and Visual Literacy in Science ... fitting the theme of seeing beyond human perception of known dimensional space. The word tesseract was later adopted for ...
Ali, S.; Sait, S.; Al-Tawil, K. (April 2003). "Perceptions about e-Learning in Saudi Arabia". ICASE World Conference on Science ... a technology that provides visual and auditory communication to students in remote area who are seeking an education. In 2001, ...
Visual binocular disparity is defined as the difference between the point of projection in the two eyes and is usually ... This allows for depth perception in stereo images. Using geometry and algebra, the points that appear in the 2D stereo images ... Specifically, these neurons will be active, if an object with "their" special disparity lies within the part of the visual ... Brain cells (neurons) in a part of the brain responsible for processing visual information coming from the retinae (primary ...
"Creating the First Visual History of Queer Life Before Stonewall". Atlantic. June 30, 2019. Retrieved June 30, 2019. Skolnik, ... to distance themselves from the perception of NOW as a haven for lesbians. As part of this process, Rita Mae Brown and other ... Two undercover policewomen and two undercover policemen entered the bar early that evening to gather visual evidence, as the ...
Stereo and depth perception. • Motion and temporal perception. • Visual masking and crowding. • Eye movements. • Applications ... 5) formulate a solution to a relevant selected research problem in visual computing using the models of visual perception.. ... Perception for Visual Computing. Leerdoelen. At the end of the course, the student is able to:. 1) explain the fundamental ... The first part focuses on the existing literature on human visual perception with reading assignments and in-class discussion. ...
Wavy to Zig-Zag Line Illusion Reveals the Importance of Corners in Perception ...
This book provides an introduction to human visual perception suitable for readers studying or working in the fields of ... Visual Perception from a Computer Graphics Perspective By William Thompson. , Roland Fleming. , Sarah Creem-Regehr. , Jeanine ... Perception and Action. Object and Scene Recognition. Visual Attention and Search. Event Recognition-Inanimate. Event ... This book provides an introduction to human visual perception suitable for readers studying or working in the fields of ...
... what is visual perception, examples, disorders involving visual perception, assessment and visual perception training. ... How can you measure and assess visual perception?. Visual perception makes it possible to do an incredible amount of activities ... How can you rehabilitate or improve visual perception?. Like all of our cognitive abilities, visual perception can be trained ... It requires many different complex processes, once of which is visual perception. If one of the processes in visual perception ...
... talks about some Gestalt Principles and Its possible importance to visual arts. ... Visual Perception Lecture 2 * 1. Visual Perception Gestalt Principle Importance of Visual Perception in Art Elements of Art Art ... Gestalt Principles of Visual Perception We impose visual organization on stimuli * 7. Gestalt Principles of Visual Perception ... 19. Gestalt Principles of Visual Perception Reversible Figure/Ground relationship * 20. Gestalt Principles of Visual Perception ...
Barraga Visual Perception Skills at Home Author: Emily Grimany November 25, 2020 ... This is a great way for your student to practice visual perceptual skills from home, with siblings, and over Zoom with ...
Visual perception : physiology, psychology, & ecology, This comprehensively updated and expanded revision of the successful ... depth perception, and motion perception. The models discussed are extensively integrated with physiological evidence. All other ... In Part I, the treatment of visual physiology has been extensively revised with an updated account of retinal processing, a new ... and an up-to-date account of the primate visual pathway. Part II contains four largely new chapters which cover recent ...
Buy Art and Visual Perception: A Psychology of the Creative Eye by Rudolf Arnheim online at Alibris. We have new and used ... Art and Visual Perception: A Psychology of the Creative Eye. by Rudolf Arnheim Write The First Customer Review ... All Editions of Art and Visual Perception: A Psychology of the Creative Eye 2004, Trade paperback ... Add this copy of Art and Visual Perception: a Psychology of the Creative to cart. $12.99, very good condition, Sold by HPB-Ruby ...
Visual Perception*Eye Movement and Design Copy*Left/Right and Directionality Concepts*References, Resources and Activity Books* ... Visual Perception*Eye Movement and Design Copy*Left/Right and Directionality Concepts*References, Resources and Activity Books* ... Visual Perceptual Classroom Favorites*Visual Perceptual Motor - Toys and Games and More ... Visual Perceptual Classroom Favorites*Visual Perceptual Motor - Toys and Games and More ...
Visual closure Aspect 4: Visual discrimination Aspect 5: Visual form constancy Aspect 6: Visual figure ground Aspect 7: Visual ... Target Ladders: Visual Perception provides small steps targets and helpful strategies based on seven key aspects of challenge ... to help and support children with Visual Perception difficulties: Aspect 1: Visual memory skills Aspect 2: Visual sequential ... Using Target Ladders Visual Perception will enable teachers, teaching assistants and SENCOs to identify appropriate learning ...
Transcranial Random Noise Stimulation of Visual Cortex: Stochastic Resonance Enhances Central Mechanisms of Perception. Onno ... Example of a visual target stimulus with five different noise levels. In the visual-noise experiment, different levels of noise ... Transcranial Random Noise Stimulation of Visual Cortex: Stochastic Resonance Enhances Central Mechanisms of Perception ... A, The 2-AFC visual detection task. Subjects fixated on the center of the screen and a visual stimulus was randomly presented ...
Visual perception is a 2-way process for interpreting and synthesizing new information. Designs can complement the process to ... Visual Perception. At one end of visual perception is the external. Our eyes take in our environment through the fovea, which ... Bottom-Up Visual Perception: What Saccadic Eye Movements Suggest For Designers. *Top-Down Visual Perception: How You Can Tap ... visual perception, memory, cognitive load. You are here:. Home / Blog / Web Design / Visual Perception - Series Wrap Up And Key ...
It makes them more likely to experience certain visual perceptions. In the study, researchers from the University of Melbourne ... Open-Minded People Have a Different Visual Perception of Reality. Your personality shapes what you see. ... They then tested who experienced a visual perception phenomenon called "binocular rivalry." This phenomenon occurs when each ... This visual phenomenon occurs when people are focusing so hard on one feature of a scene that they completely fail to notice ...
Eye Parameters (Visual Depth Perception 6). Keith Stroyan. *. Motion/Pursuit Ratio and Depth in 1D (Visual Depth Perception 17) ... Tracking and Separation (Visual Depth Perception 11). Keith Stroyan. *. Vieth-Müller Circles (Visual Depth Perception 8). Keith ... Binocular Disparity (Visual Depth Perception 7). Keith Stroyan. *. Binocular Disparity versus Depth (Visual Depth Perception 9) ... Binocular Disparity (Visual Depth Perception 7). Keith Stroyan. * Fixation and Distraction (Visual Depth Perception 5). Keith ...
The MVPT-4 is the only non-motor visual perceptual assessment that can be used throughout the lifespan.. Academic Therapy ... Visual Perception Motor-Free Visual Perception Test-4 (MVPT-4) An updated and streamlined version of the classic visual- ... NAB Visual Discrimination Test 8519-5. Test of Visual-Motor Skills-3 (TVMS-3) DDD-1462. Developmental Test of Visual-Motor ... Visual Perception*Individual Administration*Ages 4 through 80+*Norm Referenced*Qualification Level B Description. The MVPT-4 is ...
Grays visual perception research also has important implications for traffic safety and driver education. His findings ... "When driving a car, we tend to rely heavily on visual cues to determine whether it is safe to make a left-hand turn or overtake ... "Experts and novices use some of the same visual cues when hitting a baseball--the difference is in the amount of attention ... Motorists, on the other hand, use those visual-motor control strategies to avoid collisions with other objects. A recipient of ...
S4 - Ongoing fluctuation of neural activity and its relationship to visual perception. S4 - Ongoing fluctuation of neural ... While some early theoretical analyses suggest that the impact of such fluctuations in activity on visual perception may be ... Oscillatory and Feedback Activity Mediate Conscious Visual Perception. Tony Ro, City University of New York ... Our results indicate that the timing of arrival of visual events in primary visual cortex with respect to ongoing oscillatory ...
2014) Upper visual field advantage in localizing a target among distractors. i-Perception 5, 97-100. ... 2005) Perception of sign language and its application to visual communications for deaf people. Journal of Deaf Studies & Deaf ... Perception and production of language in the visual modality. Implications for sign language development. ... 2009) Is visual attention in deaf individuals enhanced or deficient? The case of the Useful Field of View. PLoS One 4(5), e5640 ...
The main aim of this thesis therefore is to enable the study of visual search, perception and cognition in multi-slice images. ... At the same time, there is little known about the processes of visual search, perception and cognition involved in their ... possibly a result of the lack of an experimental framework that enables the study of perception processes in multi-slice ... BildwahrnehmungMensch-Maschine InteraktionRadiologieCranial CTEye trackingHuman-machine interactionMedical image perception ...
pub_abstracts/visual-wetness-perception-based-on-image-color-statistics.html.txt · Last modified: 2017/09/15 12:11 by elmer ... You are here: home » pub_abstracts » Visual wetness perception based on image color statistics ...
Find Free Online Visual Perception Courses and MOOC Courses that are related to Visual Perception ... Welcome to Visual Perception for Self-Driving Cars, the third course in University of Torontos Self-Driving Cars ... This way, our course on visual perception will also provide you with knowledge on cerebral mechanisms of [...] ... This module aims at introducing fundamental concepts of visual perception applied to information visualization. These concepts ...
Altered visual perception in long-term ecstasy (MDMA) users. Citation. White, C, Brown, J & Edwards, M 2013, Altered visual ... perception in long-term ecstasy (MDMA) users, Psychopharmacology, vol. 229, no. 1, pp. 155-165. ...
Distorted perception is a defining feature of severe mental disorders and contributes to the impaired reality testing of people ... Neural Disconnection & Errant Visual Perception in Psychotic Psychopathology * Perturbation of the Treatment of Resistant ... Changes in Visual Cortical Connectivity Following Central Visual Field Loss * Connectomic Imaging in Familial & Sporadic ... These include poor integration of segments forming visual contours, and reduced visual contrast effects (e.g. weaker ...
Advances in Understanding the Visual Processes (9780306439056): NHBS - Edited By: Arne Valberg and Barry B Lee, Plenum ... From Pigments to Perception: Advances in Understanding the Visual Processes Proceedings Series: NATO ASI Series A: Life ... Proceedings of a NATO Advanced Research Workshop on Adavances in Understanding Visual Processes: Convergence of ...
In this paper we attempt to build humanly interpretable visual models, allowing the user to visually understand the underlying ... Understanding the results returned by automatic visual concept detectors is often a tricky task making users uncomfortable with ... Interpretable Visual Models for Human Perception-Based Object Retrieval Ahmed-Riadh Rebai 1 Alexis Joly 1, 2 Nozha Boujemaa 1 ... Interpretable Visual Models for Human Perception-Based Object Retrieval. ICMR11 - First ACM International Conference on ...
Home » Informationsvisualisierung » 2. Visual Perception: Optimizing Information Visualization regarding the human visual ...
Dive into the research topics of Inverse 3-D graphics: A metaphor for visual perception. Together they form a unique ...
Fall 2018 GRASP Seminar Series: Kristen Grauman, UT Austin, "See, Hear, Move: Towards Embodied Visual Perception". November 30 ... Yet cognitive science tells us that perception develops in the context of acting and moving in the world-and without intensive ... In the context of these challenges, we are exploring ways to learn visual representations from unlabeled video accompanied by ... Her research in computer vision and machine learning focuses on visual recognition and search. Before joining UT Austin in 2007 ...
... View/. Open. Jaswal2010.pdf (2.248Mb) ... The leit motif of this thesis is that binding of visual features is a process that begins with input of stimulation and ends ... Results showed that though features were processed to different time scales, they were treated in the same way by Visual ...
  • 10. Law of Proximity States that, all else being equal, perception tends to group stimuli that are close together as part of the same object, and stimuli that are far apart as two separate objects. (
  • 11. Law of Similarity States that, all else being equal, perception lends itself to seeing stimuli that physically resemble each other as part of the same object, and stimuli that are different as part of a different object. (
  • The MVPT-4 is designed to be used for screening and research purposes by psychologists, occupational therapists, educational specialists, optometrists, and others who may need to determine a person's overall ability to discern and understand visual stimuli. (
  • In his baseball simulator, Gray has been able to do something that previous researchers have not--combine controlled presentation of visual stimuli with complex motor actions and successfully analyze the role of monocular and binocular vision in hitting and catching. (
  • Background image context can influence contour perception, as stimuli near the contour affect detection accuracy. (
  • In this thesis, introduced the results of a visual selective attention task (counting objects) performed by participants watching 9-second stimuli from the movie ("Ego Cure") on 270-degree immersive audio-visual display. (
  • The comparisons relate to 1) the measurement quality of gaze behavior on static and dynamic visual stimuli, 2) the spatial orientation including distance estimations, route recreation, and actively walking tasks and 3) the completion of motoric tasks (balancing, grasping, and throwing) accompanied with different body visualization types to examine which body parts need to be visualized during the VR experience to fulfill adequate performances. (
  • Psychophysics quantitatively investigates the relationship between physical stimuli and the sensations and perception they produce. (
  • The selecting and organizing of visual stimuli based on the individual's past experience. (
  • When objects move and approach, our brains process and combine monocular and binocular visual cues to make nearly instantaneous predictions about the ball's trajectory and time of arrival," Gray explains. (
  • Experts and novices use some of the same visual cues when hitting a baseball--the difference is in the amount of attention required to process these cues and generate an action. (
  • When driving a car, we tend to rely heavily on visual cues to determine whether it is safe to make a left-hand turn or overtake another vehicle," Gray notes. (
  • In his NSF-funded driving simulator, he is able to isolate and manipulate situations and variables to determine whether motorists are making decisions based on visual cues such as perceptions of distance, speed or time to arrival of an oncoming car. (
  • This result implies that additional spatial cues in the auditory modality automatically influence human visual attention (involuntary eye movements) and human analysis of visual information. (
  • This work therefore extends our understanding of the types of cues that are and are not utilized by the visual system to detect the chasing intention . (
  • Visual cues for the perception of layout and distances of focussed virtual anatomy can be enabled by the exploit of context information. (
  • Within the scope of the practical work of this thesis a focus and context visualization framework for medical AR was implemented, which considers and exploits depth cues enabling a correct perception of the focussed virtual anatomy. (
  • Visual programming, with visual cues to define relationships, offers a graphical approach to programming, where preconfigured code blocks are utilized in place of textual lines of code to develop an application. (
  • 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. (
  • This course will introduce you to the main perception tasks in autonomous driving, static and dynamic object detection, and will survey common computer vision methods for robotic perception. (
  • The goal of this project is to use state-of-the-art brain imaging from the Human Connectome Project (HCP) in concert with sophisticated visual tasks to develop and test neurophysiological models of basic and complex visual functions of the brain in order to understand the origins of distorted perception in psychosis. (
  • We present reinforcement learning approaches for active and exploratory look-around behavior, which show promising results for transferring policies to novel perception tasks and unseen environments. (
  • Three tasks of the facial perception were conducted and each ERP was measured at four sites of the brain. (
  • By using a bottom-up approach, researchers were able to more accurately assess SSG mine workers' perceptions of risky job tasks and what factors influence the decisions they make while performing these tasks. (
  • Students with colour vision defects had significantly higher odds ratios for difficulties in daily activities and study/work tasks related to colour perception. (
  • McKeith et al have suggested that patients with DLB do relatively better on tests of confrontation naming, short and medium recall, and recognition than do patients with Alzheimer disease, whereas patients with Alzheimer disease do better on tests of verbal fluency, visual perception, and performance tasks. (
  • Finally, the visual information that our eyes receive is sent to the visual cortex in the occipital lobe. (
  • Results when noise is added centrally to the visual cortex (tRNS-noise Experiment). (
  • The study confirmed that the processing of visual information is altered in depressed people, a phenomenon most likely linked with the processing of information in the cerebral cortex. (
  • 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. (
  • Acquired CVDs reflect a problem that occurs anywhere along the visual pathway from the photoreceptors to the visual cortex (5). (
  • This phenomenon yields compact neural representations, emphasizes fine spatial detail, and might enable a temporal multiplexing of visual information from the retina to the cortex. (
  • For instance, in people that suffer permanent damage to the visual cortex, we might ask the somatosensory cortex to take over some of the roles of the visual system. (
  • This is a great way for your student to practice visual perceptual skills from home, with siblings, and over Zoom with classmates. (
  • Previous research investigated the latest versions of the Beery-Buktenica Developmental Test of Visual-motor Integration 6th edition (Beery VMI-6), Development Test of Visual Perception 3rd edition (DTVP-3) and Test of Visual Perceptual Skills 3rd edition (TVPS-3) on five-year-old English-speaking children. (
  • Assessment instruments used worldwide to specifically assess visual perceptual and visual-motor abilities include the Beery-Buktenica Developmental Test of Visual-motor Integration 6thedition (Beery VMI-6) 4 , Development Test of Visual Perception 3rdedition (DTVP-3) 5 and Test of Visual Perceptual Skills 3rd edition (TVPS-3) 6 . (
  • The 21st century preschooler develops at their own rate and pace but also may need some facilitation in fine, gross, sensory and visual perceptual skills. (
  • It covers such topics as the perception of material properties, illumination, the perception of pictorial space, image statistics, perception and action, and spatial cognition. (
  • At the same time, there is little known about the processes of visual search, perception and cognition involved in their interpretation. (
  • Academic Press series in cognition and perception. (
  • Visual Cognition, 1-3, 152-168. (
  • Visual Cognition , 1-3, 306-325. (
  • All students were submitted to the Developmental Test of Visual Perception - DTVP-2, composed of eight subtests that measure visual-motor skills interrelated with different visual perceptual ones. (
  • Sign language acquisition requires learning how to comprehend and produce a linguistic system that is visual in nature, as opposed to spoken language acquisition which uses the auditory-visual modality. (
  • This article examines the English and Dutch imperatives of intentional visual and auditory perception and in particular their use as pragmatic markers. (
  • This tendency is explained in terms of the imperatives' effectiveness in and likely recruitment for what has traditionally been called attention-getting and in terms of the common view of the nature of visual and auditory perception. (
  • This study used an infant-controlled habituation paradigm to examine how 7- to 15-month-old infants discriminate changes in visual emotion, auditory emotion, or visual+auditory emotion after being habituated to a bimodal emotion display. (
  • Infants were habituated to happy audiovisual displays then received four test trials, during which neither source of emotion information was changed (control), just the auditory emotion was changed, just the visual emotion was changed, or both sources of emotion information were changed. (
  • It was predicted that infants would show the greatest recovery of attention to a change in visual emotion than when only visual information was changed, but less than when both auditory and visual information were changed. (
  • This study aimed to understand human perception of visual and auditory signals. (
  • This "lobectomy" surgery removed his entire occipital lobe, which carries out visual processing, and most of his temporal lobe, which processes visual and auditory information. (
  • In Part I, the treatment of visual physiology has been extensively revised with an updated account of retinal processing, a new section explaining the principles of spatial and temporal filtering which underlie discussions in later chapters, and an up-to-date account of the primate visual pathway. (
  • Temporal light modulation (TLM) causes visual perception effects such as flicker, phantom array and. (
  • 4) implement and use computational models of visual perception. (
  • 5) formulate a solution to a relevant selected research problem in visual computing using the models of visual perception. (
  • Connectionist Models of Visual Perception. (
  • A small but charming tribute to a man who used visual illusions to demystify perception. (
  • Optical illusions and the visual arts by: Carraher, Ronald G. (
  • This book provides an introduction to human visual perception suitable for readers studying or working in the fields of computer graphics and visualization, cognitive science, and visual neuroscience. (
  • This module aims at introducing fundamental concepts of visual perception applied to information visualization. (
  • Many visualization approaches for medical AR suffer from a misleading depth perception, since the normally hidden interior anatomy is just superimposed on the patient s body. (
  • To this end, her work has included deep learning algorithms for concurrently learning visual perception and control in robotic manipulation skills, inverse reinforcement methods for learning reward functions underlying behavior, and meta-learning algorithms that can enable fast, few-shot adaptation in both visual perception and deep reinforcement learning. (
  • 1) explain the fundamental perceptual mechanisms of the Human Visual System. (
  • In addition to discussing the nature of ongoing activity and its impact on perception, several speakers will also use ongoing activity as a tool to understand the basic mechanisms of attention and awareness. (
  • In recent literature, various visual perception mechanisms have been modeled to facilitate the relevant consumer and industrial applications, from low-level visual attention to higher-level quality of experience, object detection, and recognition. (
  • Specifically, visual attention can help us handle massive amounts of visual information efficiently, and visual attention modeling can help us simulate such visual attention mechanisms and focus on more salient information. (
  • Specific abnormalities of vision in schizophrenia have been observed to affect high-level and some low-level integration mechanisms, suggesting that people with schizophrenia may experience anomalies across different stages in the visual system affecting either early or late processing or both. (
  • The present review suggests that this resistance is due to the weakening of top-down perceptual mechanisms and may be relevant to the understanding of symptoms of visual distortion rather than hallucinations as previously thought. (
  • Neural mechanisms of selective visual attention. (
  • [ 1 ] The basis for this classification was that these disorders occurred primarily in young adult women, affected the outer retina and choroid, and were associated with inflammation, visual field loss, and in some instances, electroretinogram abnormalities. (
  • The course will consider how what we see is generated by the visual system, what the central problem for vision is, and what visual perception indicates about how the brain works. (
  • It seems simple, but it's actually an extremely complex process that uses a number of brain structures specialized in visual perception and the different sub-components of vision. (
  • The result of this information being interpreted and received by the brain is what we call visual perception, vision, or sight. (
  • Visual Pathways in the Brain. (
  • The authors speculate that overlapping neurochemicals in the brain may link perception to personality. (
  • I will discuss some recent research on the functional significance and the organization of spontaneous brain activity, with implications for perception research. (
  • This is why the researchers consider it necessary to carry out further research on altered processing of visual information by the brain caused by depression. (
  • This study focuses on the brain information processing in the facial perception. (
  • In this study, we measured the ERP (event related potential) in the facial perception to investigate the electrical activity in the brain of facial perception. (
  • It is said that a right hemisphere is more dominant than a left hemisphere of the brain in the facial perception. (
  • Researchers wanted to find out how the boy's brain would recover after losing one of its visual centres - we usually have two, one in each of the brain's hemispheres. (
  • Tennis Bowling is a brain training game that activates a number of different cognitive skills, among which are visual perception and hand-eye coordination. (
  • We conducted experiments to find the threshold resolution of natural images and its dependence on visual acuity. (
  • Forty-five observers with visual acuity of 20/20 or better were asked to make a forced-choice distinction between the image pair in regard to resolution. (
  • The results show that the mean resolution for 75% correct responses for each of the visual acuity groups increased from more than 30 cpd as visual acuity increased and reached a plateau at 40-50 cpd at -0.3 logMAR. (
  • dependence on visual acuity. (
  • For characterizing visual impairment for codes H54.0 to H54.3, visual acuity should be measured with both eyes open with presenting correction if any. (
  • The main objective of this article is to systematize and present some factors affecting the visual perception of colour in space, which should always be taken into consideration by planners, architects, as well as investors - in both the analysis and designing of the project. (
  • Colour is the visual perception of light at different wavelengths. (
  • To determine the prevalence and predictors of colour vision defects among Assiut university students and to identify their relationship with self-reported visual function and perceived difficulties in performing daily activities. (
  • Data were collected by self-administered questionnaire consisting of: personal characteristics, prior awareness of colour vision defects, difficulties in daily colour vision activities, and visual function. (
  • To see more of our visual surroundings our eyes must alternate between very quick movements (saccades) and fixations. (
  • Volume 1 Fundamentals of Vision: Low and Mid-Level Processes in Perception covers topics from receptive field analyses to shape perception and eye movements. (
  • The retinal image is never still, even during visual fixation, when small eye movements combine with movements of the head and body to continually perturb the location of gaze. (
  • Medical image interpretation research mostly concentrates on conventional radiography, possibly a result of the lack of an experimental framework that enables the study of perception processes in multi-slice imaging. (
  • Proceedings of a NATO Advanced Research Workshop on Adavances in Understanding Visual Processes: Convergence of Neurophysiological and Psychological Evidence, held August 6-10, 1990, in Roros, Norway. (
  • The leit motif of this thesis is that binding of visual features is a process that begins with input of stimulation and ends with the emergence of an object in working memory so that it can be further manipulated for higher cognitive processes. (
  • Results showed that though features were processed to different time scales, they were treated in the same way by Visual Working Memory processes. (
  • Proceeding from the fact that hearing cooperates with visual attention processes, the purpose is to investigate the effect of different sound design conditions on the perception of cinematic content in immersive audio-visual reproductions. (
  • This new project will investigate how cognitive processes - in this case, visual search and attention and the perception of risk - influence hazard recognition. (
  • Graphic design is well suited to facilitate ecological learning since it can draw on a wide variety of visual strategies to display specific geographic spaces, ecological patterns and processes, abstract concepts and future scenarios. (
  • Part II contains four largely new chapters which cover recent psychophysical evidence and computational model of early vision: edge detection, perceptual grouping, depth perception, and motion perception. (
  • However, disparity alone does not determine depth, as shown in the Demonstration 'Binocular Disparity versus Depth (Visual Depth Perception 9)' (see Related Links). (
  • Monocular vision involves just one eye, while binocular vision incorporates vision from both eyes for depth perception. (
  • Specifically, we investigated how two pieces of the motion estimation problem - accurate perception of depth and motion - can be joined together in a robust way. (
  • One is depth perception, which tells the robot how far away the objects in its field of vision are. (
  • Forced perspective takes into account depth perception and normal perspective and challenges the viewer's sense of size, position, scale and proportion. (
  • In a possible future application of medical AR for surgical interventions, correct perception of position and depth of the focus has to be guaranteed. (
  • 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. (
  • However, this benefit was often counteracted by deep shadows that limited depth perceptions of slope in low sun elevation. (
  • 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. (
  • Accordingly, the question is whether differences in user's visual perception occur within virtual environments and how this may affect the users' actions. (
  • Since the end of the Apollo program, experiments on the capabilities of the human visual system in space have been conducted in environments with which astronauts are most familiar, such as the Space Shuttle or International Space Station. (
  • However, there is limited knowledge on how the differential properties of light outside of Earth's atmosphere affects human perception in extraterrestrial lunar environments. (
  • They then tested who experienced a visual perception phenomenon called "binocular rivalry. (
  • Visual Perception Lecture 2 talks about some Gestalt Principles and Its possible importance to visual arts. (
  • For a couple of months now I've been running a series on visual perception and some of the design principles that arise from it. (
  • Throughout his career, Craig-Martin has produced work in a variety of media, which explore the nature and basic principles of visual language and perception through the use of everyday objects, images, and materials. (
  • Visual Attention and Search. (
  • Her research in computer vision and machine learning focuses on visual recognition and search. (
  • Objective: The aim of this study is to assess the effect of proximity and time pressure on accurate and effective visual search during medication selection from a computer screen. (
  • Background: The presence of multiple similar objects in proximity to a target object increases the difficulty of a visual search. (
  • The proximity of several similarly named drugs within a visual field could, therefore, adversely affect visual search. (
  • Conclusion: The presence of multiple similarly named medications in close proximity to a target medication increases the difficulty of the visual search for the target. (
  • abstract = "Objective: The aim of this study is to assess the effect of proximity and time pressure on accurate and effective visual search during medication selection from a computer screen.Background: The presence of multiple similar objects in proximity to a target object increases the difficulty of a visual search. (
  • The proximity of several similarly named drugs within a visual field could, therefore, adversely affect visual search.Method: In Study 1, 60 nonpharmacy participants selected a target drug name from an array of mock drug packets shown on a computer screen, where one or four similarly named nontargets might be present. (
  • Approaches to the Psychology of Visual Perception. (
  • The current study investigated the perception of multiple types of chasing approaches and thus whether it is the intention of chasing that triggers the perception of chasing, whether the chasing agent and the agent being chased play equally important roles , and whether the perception of chasing requires the presence of both agents. (
  • We explore novel visual encodings and interaction techniques, multiscale approaches, and even simulation to bridge human and automated analysis of multivariate, time-series, and graph data, ultimately aiding in hypothesis generation, testing, and sense making. (
  • Moreover, the penetration port is highlighted and virtual shadows are used to provide visual feedback from instrument interaction. (
  • Remarkably, they found that his intellect, visual perception, and face and object recognition skills were all normal for his age. (
  • Even in the absence of external stimulation, the visual system shows ongoing fluctuations of neural activity. (
  • The nature of ongoing neural activity and its relationship to perception should be relevant to all attendants of VSS. (
  • This book presents a collection of articles reflecting state-of-the-art research in visual perception, specifically concentrating on neural correlates of perception. (
  • A team of researchers led by Professor Jonathan Kelly (UTIAS) has found a way to enhance the visual perception of robotic systems by coupling two different types of neural networks. (
  • 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. (
  • 5. Gestalt Psychology  Tries to understand the laws of our ability to acquire and maintain meaningful perceptions in an apparently chaotic world. (
  • Researchers specialized in psychiatry and psychology at the University of Helsinki investigated the effects of depression on visual perception. (
  • Journal of Experimental Psychology: Human Perception and Performance, 31, 592-607. (
  • Perception and motor control are often regarded as two separate branches of neuroscience. (
  • This theory posits motor contributions to early visual representations and suggests that perception and behavior are more intimately tied than commonly thought. (
  • The perception of appearance, especially facial, affects one's social behavior, with significant consequences in areas such as education, as well as one's professional and the affective life 3,4,5 . (
  • Understanding consumer health information-seeking behavior from the perspective of the risk perception attitude framework and social support in mobile social media websites. (
  • But while studies show that personality can shift over time, there's currently little research on whether perception also changes to correspond with new personality traits. (
  • Gray's visual perception research also has important implications for traffic safety and driver education. (
  • We summarize the research literature on sign language production and comprehension, and attempt to integrate psycholinguistic studies with work documenting the visual perceptual abilities of deaf children. (
  • It would be beneficial to assess and further develop the usability of perception tests, as both research methods and potential ways of identifying disturbances of information processing in patients,' Salmela says. (
  • Visual perception modeling for such advanced multimedia technologies also needs further research. (
  • Here, we review the research into visual illusion perception in schizophrenia and the issues which previous research has faced. (
  • The team has since expanded their research beyond visual motion estimation to include inertial sensing - an extra sensor that is akin to the vestibular system in the human ear. (
  • Visual methods in social research / Marcus Banks. (
  • Because pigeons share many visual-system properties with humans, the animals seemed a natural fit for research that would explore how pathologists and radiologists acquire and refine the visual skills necessary for their work ( PLOS One , November 18, 2015). (
  • As an example, a patient may present with paresthesias of a hand that resolve, followed a few months later by weakness in a leg or visual disturbances (eg, diplopia). (
  • Motorists, on the other hand, use those visual-motor control strategies to avoid collisions with other objects. (
  • A key question was what would happen to the boy's "higher order" visual capabilities, such as being able to recognise faces and objects - mainly the job of the right hemisphere. (
  • Within this diploma thesis further methods for improving the perception of layout (arrangement) and distances of objects in the AR scene are discussed. (
  • 4. Review: Identify the Images based on Perceptual Processing Categories Visual Closure ability to recognize a complete feature from fragmented information. (
  • The students of GI presented inferior performances in the skills of eye-hand coordination, position in space, copying, visual closure, visual-motor speed and form constancy in relation to the students of GII. (
  • fMRI(functional Magnetic Resonance Imaging) and PET(Positron Emission Tomography) are used in the past study of the facial perception. (
  • This isn't the only study that connects personality with perception. (
  • The three assessment instruments explored in this study were designed and standardised in the United States (USA), and cultural differences may account for discrepancies in difficulty levels of some visual perceptual and visual-motor activities of these assessment instruments 7 . (
  • In the study, the processing of visual information by patients with depression was compared to that of a control group by utilizing two visual tests. (
  • In the perception tests, the study subjects compared the brightness and contrast of simple patterns. (
  • Results: In Study 1, the proximity of multiple similarly named nontargets within the specified visual field reduced selection accuracy and increased reaction times in the nonpharmacists. (
  • This article reports the findings of a 2-phase quasi-experimental study looking at the perceptual effects of physical and visual accessibilities on clinical staff in intensive care units (ICUs). (
  • In a previous CCNQ article by Rashid et al, the first phase of the study was reported comparing, among other things, physical and visual accessibilities and their associations with staff perception in 2 ICUs with the open-plan and racetrack-type layouts. (
  • The data for that phase of the study were collected in December 2014, which included the data on physical and visual accessibilities collected using the spatial analysis techniques of Space Syntax, and the data on staff perception collected using a questionnaire survey. (
  • The findings of the study comparing the racetrack ICU of the first and second phases show that while staff perception in this unit changed, its associations with the physical and visual accessibilities of the unit did not change during the period between the first and second phases of the study. (
  • In contrast, the findings of the study comparing the open-plan ICU of the first phase and the new ICU with 4-bed pods of the second phase show that staff perception as well as its associations with the physical and visual accessibilities of the unit changed in a positive direction from the open-plan ICU to the new ICU. (
  • The study of psychophysics has widespread and important practical applications for understanding human sensory perception. (
  • A web-based cross-sectional study was designed and distributed via an online survey to 200 laypeople and 200 orthodontists to assess image attractiveness, using a Visual analogue scale. (
  • Advertising Perception Study: Application to Antismoking Public Service Announcements. (
  • In the context of these challenges, we are exploring ways to learn visual representations from unlabeled video accompanied by multi-modal sensory data like egomotion and sound. (
  • 3) explain how existing methods in visual computing improve perceived quality or decrease computational costs by using computational models of the visual perception. (
  • METHODS: One hundred consecutive patients with unilateral/bilateral blindness as a result of minor head injury were studied with regard to their visual status, CT scan, MRI scan and serial VEPs. (
  • Using qualitative data collection methods, researchers focused on the organizational, environmental, situational, and human factors that influence risk perception and tolerance and their effect on decisionmaking. (
  • The influence of threatening visual warnings on tobacco packaging: Measuring the impact of threat level, image size, and type of pack through psychophysiological and self-report methods. (
  • IMSEAR at SEARO: Visual outcome in optic nerve injury patients without initial light perception. (
  • The results revealed a statistically significant difference between GI and GII, demonstrating that GI presented changes that indicate a deficit of visual-motor perception, even though spatial relations and figure ground skills are intact. (
  • Radiologists spend years developing and improving their visual skills. (
  • Given the well-documented visual skills of pigeons, it seemed to us possible that they might also be trained to accurately distinguish medical images of clinical significance," the authors wrote. (
  • We will collect structural (T1), functional (visual task and motor task), and magnetic resonance spectroscopy (MRS) data. (
  • Only a few visual functional measures showed significant noise induced changes of possible import and these could not be altogether replicated in a second phase designed to test for adaptation of the effects. (
  • To identify what situations sand, stone, and gravel mine workers find risky and how risk perception and risk tolerance influence the decisions they make in the face of risk or danger. (
  • Because risk is inherent in the work that SSG mine workers perform and is also a critical factor in the decisionmaking process, the purpose of this pilot project was to identify what situations SSG mine workers find risky and how risk perception and risk tolerance influence the decisions they make in the face of risk or danger. (
  • Patients suffering from depression perceived the visual illusion presented in the patterns as weaker and, consequently, the contrast as somewhat stronger, than those who had not been diagnosed with depression. (
  • Schizophrenia patients demonstrate perceptual deficits consistent with broad dysfunction in visual context processing. (
  • 3] Caivano J.L., Evaluation of appearance by means of color and cesia: visual estimation and comparison with atlas samples, [w:] Materiały AIC Midterm Meeting, Warszawa 1999. (
  • Visual perception, estimation and planning are all aspects that hand-eye coordination video games have in common. (
  • The first part focuses on the existing literature on human visual perception with reading assignments and in-class discussion. (
  • This course focuses on the all-important problem of perception. (
  • 2. Review: Identify the Images based on Perceptual Processing Categories Visual Discrimination ability to be aware of the distinctive features of forms including shape, orientation, size, and color. (
  • We initially trained six rats on a simple visual discrimination task. (
  • The discussions of applications to computer graphics are the icing on the cake of a broad and often deep treatment of the ever-growing science of human visual perception. (
  • It is an excellent resource and new source of ideas about how vision works and how computer graphics can best take advantage of the properties of the human visual system. (
  • In person, perspective is informed by human visual perception. (
  • We know much less than we should about human visual capability," Levenson told . (
  • Yet cognitive science tells us that perception develops in the context of acting and moving in the world-and without intensive supervision. (
  • IEEE Access invites manuscript submissions in the area of Visual Perception Modeling in Consumer and Industrial Applications. (
  • Since the ultimate receiver of the processed signal is often human, the receiver's perception of the overall quality is also very important, and quality perception modeling can help control the whole processing chain and guarantee a good perceptual quality of experience. (
  • Due to the rapid advancement of machine learning techniques, higher-level perception modeling related to semantics also becomes possible. (
  • Moving from passively captured video to agents that control their own first-person cameras, we investigate how agents can learn to move intelligently to acquire visual observations. (
  • The MVPT-4 is the most recent revision of the only non-motor visual perceptual assessment that can be used throughout the lifespan. (
  • Bishop, I. and Miller, D. (2007) Visual assessment of offshore wind turbines: The influence of distance, contrast, movement and social variable, . (