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.
The real or apparent movement of objects through the visual field.
The distance and direction to which a bone joint can be extended. Range of motion is a function of the condition of the joints, muscles, and connective tissues involved. Joint flexibility can be improved through appropriate MUSCLE STRETCHING EXERCISES.
Disorder caused by motion, as sea sickness, train sickness, car sickness, air sickness, or SPACE MOTION SICKNESS. It may include nausea, vomiting and dizziness.
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.
Investigative technique commonly used during ELECTROENCEPHALOGRAPHY in which a series of bright light flashes or visual patterns are used to elicit brain activity.
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.
An illusion of vision usually affecting spatial relations.
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)
A perceptual phenomenon used by Gestalt psychologists to demonstrate that events in one part of the perceptual field may affect perception in another part.
The properties, processes, and behavior of biological systems under the action of mechanical forces.
The minimum amount of stimulus energy necessary to elicit a sensory response.
Any visible result of a procedure which is caused by the procedure itself and not by the entity being analyzed. Common examples include histological structures introduced by tissue processing, radiographic images of structures that are not naturally present in living tissue, and products of chemical reactions that occur during analysis.
Perception of three-dimensionality.
Differential response to different stimuli.
Mental process to visually perceive a critical number of facts (the pattern), such as characters, shapes, displays, or designs.
Voluntary or reflex-controlled movements of the eye.
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.
Eye movements that are slow, continuous, and conjugate and occur when a fixed object is moved slowly.
The art, technique, or business of producing motion pictures for entertainment, propaganda, or instruction.
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 sensory discrimination of a pattern shape or outline.
Awareness of oneself in relation to time, place and person.
The misinterpretation of a real external, sensory experience.
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.
Movement of a body part initiated and maintained by a mechanical or electrical device to restore normal range of motion to joints, muscles, or tendons after surgery, prosthesis implantation, contracture flexion, or long immobilization.
The blending of separate images seen by each eye into one composite image.
Area of the OCCIPITAL LOBE concerned with the processing of visual information relayed via VISUAL PATHWAYS.
Voluntary or involuntary motion of head that may be relative to or independent of body; includes animals and humans.
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.
The continuous visual field seen by a subject through space and time.
Computer-based representation of physical systems and phenomena such as chemical processes.
Continuation of visual impression after cessation of stimuli causing the original image.
Elements of limited time intervals, contributing to particular results or situations.
An increase in the rate of speed.
Signals for an action; that specific portion of a perceptual field or pattern of stimuli to which a subject has learned to respond.
A procedure consisting of a sequence of algebraic formulas and/or logical steps to calculate or determine a given task.
The awareness of the spatial properties of objects; includes physical space.
The selecting and organizing of visual stimuli based on the individual's past experience.
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.
The positioning and accommodation of eyes that allows the image to be brought into place on the FOVEA CENTRALIS of each eye.
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 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)
Timing the acquisition of imaging data to specific points in the breathing cycle to minimize image blurring and other motion artifacts. The images are used diagnostically and also interventionally to coordinate radiation treatment beam on/off cycles to protect healthy tissues when they move into the beam field during different times in the breathing cycle.
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.
The process of generating three-dimensional images by electronic, photographic, or other methods. For example, three-dimensional images can be generated by assembling multiple tomographic images with the aid of a computer, while photographic 3-D images (HOLOGRAPHY) can be made by exposing film to the interference pattern created when two laser light sources shine on an object.
Materials used as reference points for imaging studies.
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.
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.
Images seen by one eye.
The total area or space visible in a person's peripheral vision with the eye looking straightforward.
Models used experimentally or theoretically to study molecular shape, electronic properties, or interactions; includes analogous molecules, computer-generated graphics, and mechanical structures.
Normal nystagmus produced by looking at objects moving across the field of vision.
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.
Devices or objects in various imaging techniques used to visualize or enhance visualization by simulating conditions encountered in the procedure. Phantoms are used very often in procedures employing or measuring x-irradiation or radioactive material to evaluate performance. Phantoms often have properties similar to human tissue. Water demonstrates absorbing properties similar to normal tissue, hence water-filled phantoms are used to map radiation levels. Phantoms are used also as teaching aids to simulate real conditions with x-ray or ultrasonic machines. (From Iturralde, Dictionary and Handbook of Nuclear Medicine and Clinical Imaging, 1990)
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.
Methods developed to aid in the interpretation of ultrasound, radiographic images, etc., for diagnosis of disease.
The time from the onset of a stimulus until a response is observed.
Focusing on certain aspects of current experience to the exclusion of others. It is the act of heeding or taking notice or concentrating.
Lack of correspondence between the way a stimulus is commonly perceived and the way an individual perceives it under given conditions.
Measurements of joint flexibility (RANGE OF MOTION, ARTICULAR), usually by employing an angle-measuring device (arthrometer). Arthrometry is used to measure ligamentous laxity and stability. It is often used to evaluate the outcome of ANTERIOR CRUCIATE LIGAMENT replacement surgery.
An order of the class Insecta. Wings, when present, number two and distinguish Diptera from other so-called flies, while the halteres, or reduced hindwings, separate Diptera from other insects with one pair of wings. The order includes the families Calliphoridae, Oestridae, Phoridae, SARCOPHAGIDAE, Scatophagidae, Sciaridae, SIMULIIDAE, Tabanidae, Therevidae, Trypetidae, CERATOPOGONIDAE; CHIRONOMIDAE; CULICIDAE; DROSOPHILIDAE; GLOSSINIDAE; MUSCIDAE; TEPHRITIDAE; and PSYCHODIDAE. The larval form of Diptera species are called maggots (see LARVA).
The observation and analysis of movements in a task with an emphasis on the amount of time required to perform the task.
Improvement of the quality of a picture by various techniques, including computer processing, digital filtering, echocardiographic techniques, light and ultrastructural MICROSCOPY, fluorescence spectrometry and microscopy, scintigraphy, and in vitro image processing at the molecular level.
The process in which light signals are transformed by the PHOTORECEPTOR CELLS into electrical signals which can then be transmitted to the brain.
The storing or preserving of video signals for television to be played back later via a transmitter or receiver. Recordings may be made on magnetic tape or discs (VIDEODISC RECORDING).
The characteristic 3-dimensional shape of a protein, including the secondary, supersecondary (motifs), tertiary (domains) and quaternary structure of the peptide chain. PROTEIN STRUCTURE, QUATERNARY describes the conformation assumed by multimeric proteins (aggregates of more than one polypeptide chain).
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.)
The articulation between the head of the HUMERUS and the glenoid cavity of the SCAPULA.
The coordination of a sensory or ideational (cognitive) process and a motor activity.
Manner or style of walking.
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.
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.
Methods of creating machines and devices.
The non-genetic biological changes of an organism in response to challenges in its ENVIRONMENT.
Binary classification measures to assess test results. Sensitivity or recall rate is the proportion of true positives. Specificity is the probability of correctly determining the absence of a condition. (From Last, Dictionary of Epidemiology, 2d ed)
The electric response evoked in the cerebral cortex by visual stimulation or stimulation of the visual pathways.
A computer simulation developed to study the motion of molecules over a period of time.
The position or attitude of the body.
Theoretical representations that simulate psychological processes and/or social processes. These include the use of mathematical equations, computers, and other electronic equipment.
The interference of one perceptual stimulus with another causing a decrease or lessening in perceptual effectiveness.
The tendency of a gas or solute to pass from a point of higher pressure or concentration to a point of lower pressure or concentration and to distribute itself throughout the available space. Diffusion, especially FACILITATED DIFFUSION, is a major mechanism of BIOLOGICAL TRANSPORT.
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.
The deductive study of shape, quantity, and dependence. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)
The smallest difference which can be discriminated between two stimuli or one which is barely above the threshold.
The study of PHYSICAL PHENOMENA and PHYSICAL PROCESSES as applied to living things.
The joint that is formed by the inferior articular and malleolar articular surfaces of the TIBIA; the malleolar articular surface of the FIBULA; and the medial malleolar, lateral malleolar, and superior surfaces of the TALUS.
Imaging techniques used to colocalize sites of brain functions or physiological activity with brain structures.
Contractile activity of the MYOCARDIUM.
The act of knowing or the recognition of a distance by recollective thought, or by means of a sensory process which is under the influence of set and of prior experience.
Computer-assisted mathematical calculations of beam angles, intensities of radiation, and duration of irradiation in radiotherapy.
The act of breathing with the LUNGS, consisting of INHALATION, or the taking into the lungs of the ambient air, and of EXHALATION, or the expelling of the modified air which contains more CARBON DIOXIDE than the air taken in (Blakiston's Gould Medical Dictionary, 4th ed.). This does not include tissue respiration (= OXYGEN CONSUMPTION) or cell respiration (= CELL RESPIRATION).
A reflex wherein impulses are conveyed from the cupulas of the SEMICIRCULAR CANALS and from the OTOLITHIC MEMBRANE of the SACCULE AND UTRICLE via the VESTIBULAR NUCLEI of the BRAIN STEM and the median longitudinal fasciculus to the OCULOMOTOR NERVE nuclei. It functions to maintain a stable retinal image during head rotation by generating appropriate compensatory EYE MOVEMENTS.
The first seven VERTEBRAE of the SPINAL COLUMN, which correspond to the VERTEBRAE of the NECK.
A statistical technique that isolates and assesses the contributions of categorical independent variables to variation in the mean of a continuous dependent variable.
Theoretical representations that simulate the behavior or activity of systems, processes, or phenomena. They include the use of mathematical equations, computers, and other electronic equipment.
The use of wings or wing-like appendages to remain aloft and move through the air.
A synovial hinge connection formed between the bones of the FEMUR; TIBIA; and PATELLA.
The physical state of supporting an applied load. This often refers to the weight-bearing bones or joints that support the body's weight, especially those in the spine, hip, knee, and foot.
The joint that is formed by the distal end of the RADIUS, the articular disc of the distal radioulnar joint, and the proximal row of CARPAL BONES; (SCAPHOID BONE; LUNATE BONE; triquetral bone).
The physical characteristics and processes of biological systems.
A dead body, usually a human body.
A continuing periodic change in displacement with respect to a fixed reference. (McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)
Analysis based on the mathematical function first formulated by Jean-Baptiste-Joseph Fourier in 1807. The function, known as the Fourier transform, describes the sinusoidal pattern of any fluctuating pattern in the physical world in terms of its amplitude and its phase. It has broad applications in biomedicine, e.g., analysis of the x-ray crystallography data pivotal in identifying the double helical nature of DNA and in analysis of other molecules, including viruses, and the modified back-projection algorithm universally used in computerized tomography imaging, etc. (From Segen, The Dictionary of Modern Medicine, 1992)
Ultrasonic recording of the size, motion, and composition of the heart and surrounding tissues. The standard approach is transthoracic.
An abrupt voluntary shift in ocular fixation from one point to another, as occurs in reading.
A competitive nine-member team sport including softball.
A gelatinous membrane overlying the acoustic maculae of SACCULE AND UTRICLE. It contains minute crystalline particles (otoliths) of CALCIUM CARBONATE and protein on its outer surface. In response to head movement, the otoliths shift causing distortion of the vestibular hair cells which transduce nerve signals to the BRAIN for interpretation of equilibrium.
Theoretical representations that simulate the behavior or activity of chemical processes or phenomena; includes the use of mathematical equations, computers, and other electronic equipment.
Part of the body in humans and primates where the arms connect to the trunk. The shoulder has five joints; ACROMIOCLAVICULAR joint, CORACOCLAVICULAR joint, GLENOHUMERAL joint, scapulathoracic joint, and STERNOCLAVICULAR joint.
Resistance and recovery from distortion of shape.
A hinge joint connecting the FOREARM to the ARM.
The application of electronic, computerized control systems to mechanical devices designed to perform human functions. Formerly restricted to industry, but nowadays applied to artificial organs controlled by bionic (bioelectronic) devices, like automated insulin pumps and other prostheses.
The resistance that a gaseous or liquid system offers to flow when it is subjected to shear stress. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)
Disorder characterized by nausea, vomiting, and dizziness, possibly in response to vestibular disorientation or fluid shifts associated with space flight. (From Webster's New World Dictionary)
The hollow, muscular organ that maintains the circulation of the blood.
The ability to estimate periods of time lapsed or duration of time.
Lack of stability of a joint or joint prosthesis. Factors involved are intra-articular disease and integrity of extra-articular structures such as joint capsule, ligaments, and muscles.
The replacement of intervertebral discs in the spinal column with artificial devices. The procedure is done in the lumbar or cervical spine to relieve severe pain resulting from INTERVERTEBRAL DISC DEGENERATION.
The observation of successive phases of MOVEMENT by use of a flashing light.
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.
Spectroscopic method of measuring the magnetic moment of elementary particles such as atomic nuclei, protons or electrons. It is employed in clinical applications such as NMR Tomography (MAGNETIC RESONANCE IMAGING).
VERTEBRAE in the region of the lower BACK below the THORACIC VERTEBRAE and above the SACRAL VERTEBRAE.
Timing the acquisition of imaging data to specific points in the cardiac cycle to minimize image blurring and other motion artifacts.
A catecholamine derivative with specificity for BETA-1 ADRENERGIC RECEPTORS. It is commonly used as a cardiotonic agent after CARDIAC SURGERY and during DOBUTAMINE STRESS ECHOCARDIOGRAPHY.
A rigorously mathematical analysis of energy relationships (heat, work, temperature, and equilibrium). It describes systems whose states are determined by thermal parameters, such as temperature, in addition to mechanical and electromagnetic parameters. (From Hawley's Condensed Chemical Dictionary, 12th ed)
The rotational force about an axis that is equal to the product of a force times the distance from the axis where the force is applied.
An activity in which the body advances at a slow to moderate pace by moving the feet in a coordinated fashion. This includes recreational walking, walking for fitness, and competitive race-walking.
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.
Sense of movement of a part of the body, such as movement of fingers, elbows, knees, limbs, or weights.
The joint that is formed by the articulation of the head of FEMUR and the ACETABULUM of the PELVIS.
A purely physical condition which exists within any material because of strain or deformation by external forces or by non-uniform thermal expansion; expressed quantitatively in units of force per unit area.
A type of imaging technique used primarily in the field of cardiology. By coordinating the fast gradient-echo MRI sequence with retrospective ECG-gating, numerous short time frames evenly spaced in the cardiac cycle are produced. These images are laced together in a cinematic display so that wall motion of the ventricles, valve motion, and blood flow patterns in the heart and great vessels can be visualized.
NMR spectroscopy on small- to medium-size biological macromolecules. This is often used for structural investigation of proteins and nucleic acids, and often involves more than one isotope.
Molecules which contain an atom or a group of atoms exhibiting an unpaired electron spin that can be detected by electron spin resonance spectroscopy and can be bonded to another molecule. (McGraw-Hill Dictionary of Chemical and Technical Terms, 4th ed)
Acceleration produced by the mutual attraction of two masses, and of magnitude inversely proportional to the square of the distance between the two centers of mass. It is also the force imparted by the earth, moon, or a planet to an object near its surface. (From NASA Thesaurus, 1988)
A physical property showing different values in relation to the direction in or along which the measurement is made. The physical property may be with regard to thermal or electric conductivity or light refraction. In crystallography, it describes crystals whose index of refraction varies with the direction of the incident light. It is also called acolotropy and colotropy. The opposite of anisotropy is isotropy wherein the same values characterize the object when measured along axes in all directions.
The upper part of the human body, or the front or upper part of the body of an animal, typically separated from the rest of the body by a neck, and containing the brain, mouth, and sense organs.
The upper part of the trunk between the NECK and the ABDOMEN. It contains the chief organs of the circulatory and respiratory systems. (From Stedman, 25th ed)
Movement or the ability to move from one place or another. It can refer to humans, vertebrate or invertebrate animals, and microorganisms.
The hemodynamic and electrophysiological action of the left HEART VENTRICLE. Its measurement is an important aspect of the clinical evaluation of patients with heart disease to determine the effects of the disease on cardiac performance.
Continuous frequency distribution of infinite range. Its properties are as follows: 1, continuous, symmetrical distribution with both tails extending to infinity; 2, arithmetic mean, mode, and median identical; and 3, shape completely determined by the mean and standard deviation.
Production of an image when x-rays strike a fluorescent screen.
Collective behavior of an aggregate of individuals giving the appearance of unity of attitude, feeling, and motivation.
A partial or complete return to the normal or proper physiologic activity of an organ or part following disease or trauma.
The sensory interpretation of the dimensions of objects.
The characteristic three-dimensional shape of a molecule.
Proteins that are involved in or cause CELL MOVEMENT such as the rotary structures (flagellar motor) or the structures whose movement is directed along cytoskeletal filaments (MYOSIN; KINESIN; and DYNEIN motor families).
Methods and procedures for recording EYE MOVEMENTS.
The superior part of the upper extremity between the SHOULDER and the ELBOW.
A twisting deformation of a solid body about an axis. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)
The physical or mechanical action of the LUNGS; DIAPHRAGM; RIBS; and CHEST WALL during respiration. It includes airflow, lung volume, neural and reflex controls, mechanoreceptors, breathing patterns, etc.
The evaluation of incidents involving the loss of function of a device. These evaluations are used for a variety of purposes such as to determine the failure rates, the causes of failures, costs of failures, and the reliability and maintainability of devices.
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.
Measurement of the polarization of fluorescent light from solutions or microscopic specimens. It is used to provide information concerning molecular size, shape, and conformation, molecular anisotropy, electronic energy transfer, molecular interaction, including dye and coenzyme binding, and the antigen-antibody reaction.
The study of the deformation and flow of matter, usually liquids or fluids, and of the plastic flow of solids. The concept covers consistency, dilatancy, liquefaction, resistance to flow, shearing, thixotrophy, and VISCOSITY.
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.
The recording of images in three-dimensional form on a photographic film by exposing it to a laser beam reflected from the object under study.
The lower right and left chambers of the heart. The right ventricle pumps venous BLOOD into the LUNGS and the left ventricle pumps oxygenated blood into the systemic arterial circulation.
That portion of the electromagnetic spectrum in the visible, ultraviolet, and infrared range.
A method of computed tomography that uses radionuclides which emit a single photon of a given energy. The camera is rotated 180 or 360 degrees around the patient to capture images at multiple positions along the arc. The computer is then used to reconstruct the transaxial, sagittal, and coronal images from the 3-dimensional distribution of radionuclides in the organ. The advantages of SPECT are that it can be used to observe biochemical and physiological processes as well as size and volume of the organ. The disadvantage is that, unlike positron-emission tomography where the positron-electron annihilation results in the emission of 2 photons at 180 degrees from each other, SPECT requires physical collimation to line up the photons, which results in the loss of many available photons and hence degrades the image.
Radionuclide ventriculography where scintigraphic data is acquired during repeated cardiac cycles at specific times in the cycle, using an electrocardiographic synchronizer or gating device. Analysis of right ventricular function is difficult with this technique; that is best evaluated by first-pass ventriculography (VENTRICULOGRAPHY, FIRST-PASS).
The rate dynamics in chemical or physical systems.
The motion of fluids, especially noncompressible liquids, under the influence of internal and external forces.
An oval semitransparent membrane separating the external EAR CANAL from the tympanic cavity (EAR, MIDDLE). It contains three layers: the skin of the external ear canal; the core of radially and circularly arranged collagen fibers; and the MUCOSA of the middle ear.
Also called the shoulder blade, it is a flat triangular bone, a pair of which form the back part of the shoulder girdle.
A clear, odorless, tasteless liquid that is essential for most animal and plant life and is an excellent solvent for many substances. The chemical formula is hydrogen oxide (H2O). (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
Therapeutic modalities frequently used in PHYSICAL THERAPY SPECIALTY by PHYSICAL THERAPISTS or physiotherapists to promote, maintain, or restore the physical and physiological well-being of an individual.
A POSTURE in which an ideal body mass distribution is achieved. Postural balance provides the body carriage stability and conditions for normal functions in stationary position or in movement, such as sitting, standing, or walking.
Use of sound to elicit a response in the nervous system.
Studies to determine the advantages or disadvantages, practicability, or capability of accomplishing a projected plan, study, or project.
Any of the 23 plates of fibrocartilage found between the bodies of adjacent VERTEBRAE.
The failure by the observer to measure or identify a phenomenon accurately, which results in an error. Sources for this may be due to the observer's missing an abnormality, or to faulty technique resulting in incorrect test measurement, or to misinterpretation of the data. Two varieties are inter-observer variation (the amount observers vary from one another when reporting on the same material) and intra-observer variation (the amount one observer varies between observations when reporting more than once on the same material).
The distal part of the arm beyond the wrist in humans and primates, that includes the palm, fingers, and thumb.
The articulations between the various CARPAL BONES. This does not include the WRIST JOINT which consists of the articulations between the RADIUS; ULNA; and proximal CARPAL BONES.
Computer systems or networks designed to provide radiographic interpretive information.
The level of protein structure in which regular hydrogen-bond interactions within contiguous stretches of polypeptide chain give rise to alpha helices, beta strands (which align to form beta sheets) or other types of coils. This is the first folding level of protein conformation.
The quality or state of being able to be bent or creased repeatedly. (From Webster, 3d ed)
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.
A method of recording heart motion and internal structures by combining ultrasonic imaging with exercise testing (EXERCISE TEST) or pharmacologic stress.
Involuntary rhythmical movements of the eyes in the normal person. These can be naturally occurring as in end-position (end-point, end-stage, or deviational) nystagmus or induced by the optokinetic drum (NYSTAGMUS, OPTOKINETIC), caloric test, or a rotating chair.
The point or frequency at which all flicker of an intermittent light stimulus disappears.
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.
A type of non-ionizing radiation in which energy is transmitted through solid, liquid, or gas as compression waves. Sound (acoustic or sonic) radiation with frequencies above the audible range is classified as ultrasonic. Sound radiation below the audible range is classified as infrasonic.
Tomography using x-ray transmission and a computer algorithm to reconstruct the image.
Assessment of psychological variables by the application of mathematical procedures.
Recording of the changes in electric potential of muscle by means of surface or needle electrodes.
Computed tomography modalities which use a cone or pyramid-shaped beam of radiation.
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).
The detailed examination of observable activity or behavior associated with the execution or completion of a required function or unit of work.
Surface resistance to the relative motion of one body against the rubbing, sliding, rolling, or flowing of another with which it is in contact.
A type of stress exerted uniformly in all directions. Its measure is the force exerted per unit area. (McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)
A condition in which the LEFT VENTRICLE of the heart was functionally impaired. This condition usually leads to HEART FAILURE; MYOCARDIAL INFARCTION; and other cardiovascular complications. Diagnosis is made by measuring the diminished ejection fraction and a depressed level of motility of the left ventricular wall.
The property of objects that determines the direction of heat flow when they are placed in direct thermal contact. The temperature is the energy of microscopic motions (vibrational and translational) of the particles of atoms.
An involuntary or voluntary pause in breathing, sometimes accompanied by loss of consciousness.
Motion pictures of the passage of contrast medium through blood vessels.
The visually perceived property of objects created by absorption or reflection of specific wavelengths of light.
The level of protein structure in which combinations of secondary protein structures (alpha helices, beta sheets, loop regions, and motifs) pack together to form folded shapes called domains. Disulfide bridges between cysteines in two different parts of the polypeptide chain along with other interactions between the chains play a role in the formation and stabilization of tertiary structure. Small proteins usually consist of only one domain but larger proteins may contain a number of domains connected by segments of polypeptide chain which lack regular secondary structure.
Computer-assisted processing of electric, ultrasonic, or electronic signals to interpret function and activity.
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.
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)
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.

The forward rate of binding of surface-tethered reactants: effect of relative motion between two surfaces. (1/2370)

The reaction of molecules confined to two dimensions is of interest in cell adhesion, specifically for the reaction between cell surface receptors and substrate-bound ligand. We have developed a model to describe the overall rate of reaction of species that are bound to surfaces under relative motion, such that the Peclet number is order one or greater. The encounter rate between reactive species is calculated from solution of the two-dimensional convection-diffusion equation. The probability that each encounter will lead to binding depends on the intrinsic rate of reaction and the encounter duration. The encounter duration is obtained from the theory of first passage times. We find that the binding rate increases with relative velocity between the two surfaces, then reaches a plateau. This plateau indicates that the increase in the encounter rate is counterbalanced by the decrease in the encounter duration as the relative velocity increases. The binding rate is fully described by two dimensionless parameters, the Peclet number and the Damkohler number. We use this model to explain data from the cell adhesion literature by incorporating these rate laws into "adhesive dynamics" simulations to model the binding of a cell to a surface under flow. Leukocytes are known to display a "shear threshold effect" when binding selectin-coated surfaces under shear flow, defined as an increase in bind rate with shear; this effect, as calculated here, is due to an increase in collisions between receptor and ligand with increasing shear. The model can be used to explain other published data on the effect of wall shear rate on the binding of cells to surfaces, specifically the mild decrease in binding within a fixed area with increasing shear rate.  (+info)

Synchronization of local neural networks in the somatosensory cortex: A comparison of stationary and moving stimuli. (2/2370)

Spontaneous and stimulus-induced responses were recorded from neighboring groups of neurons by an array of electrodes in the primary (SI) somatosensory cortex of intact, halothane-anesthetized cats. Cross-correlation analysis was used to characterize the coordination of spontaneous activity and the responses to peripheral stimulation with moving or stationary air jets. Although synchronization was detected in only 10% (88 of 880) of the pairs of single neurons that were recorded, cross-correlation analysis of multiunit responses revealed significant levels of synchronization in 64% of the 123 recorded electrode pairs. Compared with spontaneous activity, both stationary and moving air jets caused substantial increases in the rate, proportion, and temporal precision of synchronized activity in local regions of SI cortex. Among populations of neurons that were synchronized by both types of air-jet stimulation, the mean rate of synchronized activity was significantly higher during moving air-jet stimulation than during stationary air-jet stimulation. Moving air jets also produced significantly higher correlation coefficients than stationary air jets in the raw cross-correlograms (CCGs) but not in the shift-corrected CCGs. The incidence and rate of stimulus-induced synchronization varied with the distance separating the recording sites. For sites separated by /=500 microm, only 37% of the multiunit responses were synchronized by discrete stimulation with a single air jet. Measurements of the multiunit CCG peak half-widths showed that the correlated activity produced by moving air jets had slightly less temporal variability than that produced by stationary air jets. These results indicate that moving stimuli produce greater levels of synchronization than stationary stimuli among local groups of SI neurons and suggest that neuronal synchronization may supplement the changes in firing rate which code intensity and other attributes of a cutaneous stimulus.  (+info)

DNA translocation blockage, a general mechanism of cleavage site selection by type I restriction enzymes. (3/2370)

Type I restriction enzymes bind to a specific DNA sequence and subsequently translocate DNA past the complex to reach a non-specific cleavage site. We have examined several potential blocks to DNA translocation, such as positive supercoiling or a Holliday junction, for their ability to trigger DNA cleavage by type I restriction enzymes. Introduction of positive supercoiling into plasmid DNA did not have a significant effect on the rate of DNA cleavage by EcoAI endonuclease nor on the enzyme's ability to select cleavage sites randomly throughout the DNA molecule. Thus, positive supercoiling does not prevent DNA translocation. EcoR124II endonuclease cleaved DNA at Holliday junctions present on both linear and negatively supercoiled substrates. The latter substrate was cleaved by a single enzyme molecule at two sites, one on either side of the junction, consistent with a bi-directional translocation model. Linear DNA molecules with two recognition sites for endonucleases from different type I families were cut between the sites when both enzymes were added simultaneously but not when a single enzyme was added. We propose that type I restriction enzymes can track along a DNA substrate irrespective of its topology and cleave DNA at any barrier that is able to halt the translocation process.  (+info)

Sensitivity to simulated directional sound motion in the rat primary auditory cortex. (4/2370)

Sensitivity to simulated directional sound motion in the rat primary auditory cortex. This paper examines neuron responses in rat primary auditory cortex (AI) during sound stimulation of the two ears designed to simulate sound motion in the horizontal plane. The simulated sound motion was synthesized from mathematical equations that generated dynamic changes in interaural phase, intensity, and Doppler shifts at the two ears. The simulated sounds were based on moving sources in the right frontal horizontal quadrant. Stimuli consisted of three circumferential segments between 0 and 30 degrees, 30 and 60 degrees, and 60 and 90 degrees and four radial segments at 0, 30, 60, and 90 degrees. The constant velocity portion of each segment was 0.84 m long. The circumferential segments and center of the radial segments were calculated to simulate a distance of 2 m from the head. Each segment had two trajectories that simulated motion in both directions, and each trajectory was presented at two velocities. Young adult rats were anesthetized, the left primary auditory cortex was exposed, and microelectrode recordings were obtained from sound responsive cells in AI. All testing took place at a tonal frequency that most closely approximated the best frequency of the unit at a level 20 dB above the tuning curve threshold. The results were presented on polar plots that emphasized the two directions of simulated motion for each segment rather than the location of sound in space. The trajectory exhibiting a "maximum motion response" could be identified from these plots. "Neuron discharge profiles" within these trajectories were used to demonstrate neuron activity for the two motion directions. Cells were identified that clearly responded to simulated uni- or multidirectional sound motion (39%), that were sensitive to sound location only (19%), or that were sound driven but insensitive to our location or sound motion stimuli (42%). The results demonstrated the capacity of neurons in rat auditory cortex to selectively process dynamic stimulus conditions representing simulated motion on the horizontal plane. Our data further show that some cells were responsive to location along the horizontal plane but not sensitive to motion. Cells sensitive to motion, however, also responded best to the moving sound at a particular location within the trajectory. It would seem that the mechanisms underlying sensitivity to sound location as well as direction of motion converge on the same cell.  (+info)

Vertical eye position-dependence of the human vestibuloocular reflex during passive and active yaw head rotations. (5/2370)

Vertical eye position-dependence of the human vestibuloocular reflex during passive and active yaw head rotations. The effect of vertical eye-in-head position on the compensatory eye rotation response to passive and active high acceleration yaw head rotations was examined in eight normal human subjects. The stimuli consisted of brief, low amplitude (15-25 degrees ), high acceleration (4,000-6,000 degrees /s2) yaw head rotations with respect to the trunk (peak velocity was 150-350 degrees /s). Eye and head rotations were recorded in three-dimensional space using the magnetic search coil technique. The input-output kinematics of the three-dimensional vestibuloocular reflex (VOR) were assessed by finding the difference between the inverted eye velocity vector and the head velocity vector (both referenced to a head-fixed coordinate system) as a time series. During passive head impulses, the head and eye velocity axes aligned well with each other for the first 47 ms after the onset of the stimulus, regardless of vertical eye-in-head position. After the initial 47-ms period, the degree of alignment of the eye and head velocity axes was modulated by vertical eye-in-head position. When fixation was on a target 20 degrees up, the eye and head velocity axes remained well aligned with each other. However, when fixation was on targets at 0 and 20 degrees down, the eye velocity axis tilted forward relative to the head velocity axis. During active head impulses, the axis tilt became apparent within 5 ms of the onset of the stimulus. When fixation was on a target at 0 degrees, the velocity axes remained well aligned with each other. When fixation was on a target 20 degrees up, the eye velocity axis tilted backward, when fixation was on a target 20 degrees down, the eye velocity axis tilted forward. The findings show that the VOR compensates very well for head motion in the early part of the response to unpredictable high acceleration stimuli-the eye position- dependence of the VOR does not become apparent until 47 ms after the onset of the stimulus. In contrast, the response to active high acceleration stimuli shows eye position-dependence from within 5 ms of the onset of the stimulus. A model using a VOR-Listing's law compromise strategy did not accurately predict the patterns observed in the data, raising questions about how the eye position-dependence of the VOR is generated. We suggest, in view of recent findings, that the phenomenon could arise due to the effects of fibromuscular pulleys on the functional pulling directions of the rectus muscles.  (+info)

Lumbar intradiscal pressure after posterolateral fusion and pedicle screw fixation. (6/2370)

In vitro biomechanical testing was performed in single-functional spinal units of fresh calf lumbar spines, using pressure needle transducers to investigate the effect of posterolateral fusion (PLF) and pedicle screw constructs (PS) on intradiscal pressure (IDP), in order to elucidate the mechanical factors concerned with residual low back pain after PLF. IDP of 6 calf lumbar spines consisting of L4 and L5 vertebrae and an intervening disc was measured under axial compression, flexion-extension and lateral bending in the intact spine, PS, PLF and the destabilized spine. Relative to the intact spines, the destabilized spines showed increased IDP in all of lordings and moments. IDP under PS and PLF were significantly decreased in axial compression, extension and lateral bending loads (p<0.05). In flexion, IDP under PS and PLF increased linearly proportional to the magnitude of flexion moment and reached as high as IDP of the intact spines. These results demonstrated that despite an increase in the stiffness of motion segments after PLF and PS, significant high disc pressure is still generated in flexion. Flexibility of PS and PLF may cause increased axial load sharing of the disc in flexion and increased IDP. This high IDP may explain patients' persisting pain following PS and PLF.  (+info)

Electromyographic study of the elbow flexors and extensors in a motion of forearm pronation/supination while maintaining elbow flexion in humans. (7/2370)

Activities of the elbow flexors (biceps brachii, BB; brachialis, B; brachioradialis, BR) and extensors (triceps brachii, TB) in a motion of forearm pronation/supination with maintenance of elbow flexion (PS-movement) in nine healthy human subjects were studied by electromyography (EMG). The subject performed the PS-movement slowly or quickly with or without a load extending the elbow. In the slow PS-movement, an increase and decrease of EMG activities during supination and pronation, respectively, were seen in BB and the reverse was in B. A clear increment of EMG activities in BB accompanied with a reduction of EMG activities in B and/or BR, and the reverse were often observed. The contraction level and gain with the forearm supine were higher and larger than those with the forearm prone, respectively, in BB and the reverse was in B and BR. In a series of the quick PS-movement, alternating increases of EMG activities between BB and the other flexors (B and BR) were seen. Since TB showed no EMG activities throughout the experiment, it is suggested that reciprocal contractions between BB and the other flexors, which produce a complementary force in flexion direction, enable motions of pronation/supination with maintenance of flexion. Contraction properties of the flexors were discussed.  (+info)

Direct measurement of inter-doublet elasticity in flagellar axonemes. (8/2370)

The outer doublet microtubules in ciliary and flagellar axonemes are presumed to be connected with each other by elastic links called the inter-doublet links or the nexin links, but it is not known whether there actually are such elastic links. In this study, to detect the elasticity of the putative inter-doublet links, shear force was applied to Chlamydomonas axonemes with a fine glass needle and the longitudinal elasticity was determined from the deflection of the needle. Wild-type axonemes underwent a high-frequency, nanometer-scale vibration in the presence of ATP. When longitudinal shear force was applied, the average position of the needle tip attached to the axoneme moved linearly with the force applied, yielding an estimate of spring constant of 2.0 (S.D.: 0.8) pN/nm for 1 microm of axoneme. This value did not change in the presence of vanadate, i.e., when dynein does not form strong cross bridges. In contrast, it was at least five times larger when ATP was absent, i.e., when dynein forms strong cross bridges. The measured elasticity did not significantly differ in various mutant axonemes lacking the central-pair microtubules, a subset of inner-arm dynein, outer-arm dynein, or the radial spokes, although it was somewhat smaller in the latter two mutants. It was also observed that the shear displacement in an axoneme in the presence of ATP often took place in a stepwise manner. This suggests that the inter-doublet links can reversibly detach from and reattach to the outer doublets in a cooperative manner. This study thus provides the first direct measure of the elasticity of inter-doublet links and also demonstrates its dynamic nature.  (+info)

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The present invention relates to motion estimation and compensation. For example, a screen capture encoder performs motion estimation that is adapted to screen capture video in various respects. For example, the motion estimation uses a distortion measure based upon the count of equal/unequal pixels in two regions, sub-samples the distortion measure to speed up motion estimation, and/or uses a search pattern that prioritizes types of motion common in screen capture video. Or, a screen capture decoder performs motion compensation that is adapted to screen capture video in various respects. For example, the decoder performs the motion compensation for pixels with different values at corresponding locations in a current frame and a reference frame, but not for all pixels of the current frame. Alternatively, an encoder/decoder performs the motion estimation/compensation to compress/decompress other kinds of content.
A large part of my work in motion estimation is on warping motion estimation and its variants, also known as mesh-based estimation. The simplest motion estimation method is the block-matching algorithm (BMA), where the pixel values in blocks of each frame are estimated by a displaced block of similar shape and size in the past frame. Warping motion estimation allows these block shapes and sizes to change as they move from one frame to another, therefore allowing a more flexible (and hence more powerful) estimation. In mesh-based motion, unlike BMA, the computation of a motion vector is affected by the neighboring vectors. This interdependence necessitates a costly iterative approach to the computation of motion. The computational cost of mesh-based motion has been a main drawback of this otherwise powerful technique. In [1] we find a method by which cheaply computed BMA motion vectors can be used in mesh-based systems. This is not a trivial task, since a straight forward insertion of BMA motion ...
Head motion is one of major concerns in current resting-state functional MRI studies. Image realignment including motion estimation and spatial resampling is often applied to achieve rigid-body motion correction. While the accurate estimation of motion parameters has been addressed in most studies, spatial resampling could also produce spurious variance and lead to unexpected errors on the amplitude of BOLD signal. In this study, two simulation experiments were designed to characterize these variance related with spatial resampling. The fluctuation amplitude of spurious variance was first investigated using a set of simulated images with estimated motion parameters from a real dataset, and regions more likely to be affected by spatial resampling were found around the peripheral regions of the cortex. Another simulation was designed with three typical types of motion parameters to represent different extents of motion. It was found that areas with significant correlation between spurious variance and
A speculative start point selection for motion estimation iterative search improves the efficiency and quality of the integer-pel motion estimation iterative search by speculatively selecting the start position of the iteration. The start position is selected by comparing the Sum of Absolute Differences (SAD) value of a 0 motion vector, a predicted motion vector and a global motion vector (GMV) and selecting the position with the smallest SAD value. A refinement scheme with a threshold improves the efficiency and quality of the motion estimation iterative search by performing several comparisons to ensure the proper motion vector is selected. Applications of this improved motion estimation search include stabilizing an image as well as many other applications where motion vectors are used.
Recognition of body posture and motion is an important physiological function that can keep the body in balance. Man-made motion sensors have also been widely applied for a broad array of biomedical applications including diagnosis of balance disorders and evaluation of energy expenditure. This paper reviews the state-of-the-art sensing components utilized for body motion measurement. The anatomy and working principles of a natural body motion sensor, the human vestibular system, are first described. Various man-made inertial sensors are then elaborated based on their distinctive sensing mechanisms. In particular, both the conventional solid-state motion sensors and the emerging non solid-state motion sensors are depicted. With their lower cost and increased intelligence, man-made motion sensors are expected to play an increasingly important role in biomedical systems for basic research as well as clinical diagnostics.
PURPOSE: Motion-compensated temporal processing can have a major impact on improving the image quality in gated cardiac single photon emission computed tomography (SPECT). In this work, we investigate the effect of different optical flow estimation methods for motion-compensated temporal processing in gated SPECT. In particular, we explore whether better motion estimation can substantially improve reconstructed image quality, and how the estimated motion would compare to the ideal case of known motion in terms of reconstruction. METHODS: We consider the following three methods for obtaining the image motion in 4D reconstruction: (1) the Horn-Schunck optical flow equation (OFE) method, (2) a recently developed periodic OFE method, and (3) known cardiac motion derived from the NURBS-based cardiac-torso (NCAT) phantom. The periodic OFE method is used to exploit the inherent periodic nature in cardiac gated images. In this method, the optical flow in a sequence is modeled by a Fourier harmonic
Membrane rejection models generally neglect the effect of the pore entrance on intrapore particle transport. However, entrance effects are expected to be particularly important with ultrathin membranes, where membrane thickness is typically comparable to pore size. In this work, a 2D model was developed to simulate particle motion for spherical particles moving at small Re and infinite Pe from the reservoir outside the pore into a slit pore. Using a finite element method, particles were tracked as they accelerated across the pore entrance until they reached a steady velocity in the pore. The axial position in the pore where particle motion becomes steady is defined as the particle entrance length (PEL). PELs were found to be comparable to the fluid entrance length, larger than the pore size and larger than the thickness typical of many ultrathin membranes. Results also show that, in the absence of particle diffusion, hydrodynamic particle-membrane interactions at the pore mouth result in particle
A different opinion from Galens about the motions of the head In the first place, we move the head either with a primary motion in which the neck holds still, or with a secondary motion, where the head follows the motion of the neck even if you try to move it in a different direction from the neck. There are two movements peculiar to the head: in one, we bend it forward and incline it backward, or extend it. You perform this motion with a rigid, unmoved neck or with a neck moved simultaneously, whether you do it with a motion equal with the head, or a contrary motion. For although you move the neck forward and the head necessarily follows the neck, still you can bend the head backward with its own motion and easily observe that the head and neck have their separate and distinct motions in bending and unbending. The other peculiar movement of the head should be counted that by which we rotate it more or less as if we were spinning it as a wheel is turned on an axle. You will undergo this motion ...
The system provides improved procedures to estimate head motion between two images of a face. Locations of a number of distinct facial features are identified in two images. The identified locations can correspond to the eye comers, mouth corners and nose tip. The locations are converted into as a set of physical face parameters based on the symmetry of the identified distinct facial features. The set of physical parameters reduces the number of unknowns as compared to the number of equations used to determine the unknowns. An initial head motion estimate is determined by: (a) estimating each of the set of physical parameters, (b) estimating a first head pose transform corresponding to the first image, and (c) estimating a second head pose transform corresponding to the second image. The head motion estimate can be incorporated into a feature matching algorithm to refine the head motion estimation and the physical facial parameters. In one implementation, an inequality constraint is placed on a
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Given the complex dynamics of cardiac motion, understand- ing the motion for both normal and pathological cases can aid in un- derstanding how different pathological conditions effect, and are affected by cardiac motion. Naturally, different regions of the left ventricle of the heart move in different ways depending on the location, with sig- nificantly different dynamics between the septal and free wall, and basal and apical regions. Therefore, studying the motion at a regional level can provide further information towards identifying abnormal regions for ex- ample. The 4D left ventricular motion of a given case was characterised by a low number of parameters at a region level using a cardiac specific polyaffine motion model. The motion was then studied at a regional level by analysing the computed affine transformation matrix of each region. This was used to examine the regional evolution of normal and patho- logical subjects over the cardiac cycle. The method was tested on 15 healthy volunteers with
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BACKGROUND:Myocardial motion is an important observable for the assessment of heart condition. Accurate estimates of ventricular (LV) wall motion are required for quantifying myocardial deformation and assessing local tissue function and viability. Harmonic Phase (HARP) analysis was developed for measuring regional LV motion using tagged magnetic resonance imaging (tMRI) data. With current computer-aided postprocessing tools including HARP analysis, large motions experienced by myocardial tissue are, however, often intractable to measure. This paper addresses this issue and provides a solution to make such measurements possible.METHODS:To improve the estimation performance of large cardiac motions while analyzing tMRI data sets, we propose a two-step solution. The first step involves constructing a model to describe average systolic motion of the LV wall within a subject group. The second step involves time-reversal of the model applied as a spatial coordinate transformation to digitally relax ...
TY - JOUR. T1 - Prediction of protein motions from amino acid sequence and its application to protein-protein interaction. AU - Hirose, Shuichi. AU - Yokota, Kiyonobu. AU - Kuroda, Yutaka. AU - Wako, Hiroshi. AU - Endo, Shigeru. AU - Kanai, Satoru. AU - Noguchi, Tamotsu. PY - 2010. Y1 - 2010. N2 - Background. Structural flexibility is an important characteristic of proteins because it is often associated with their function. The movement of a polypeptide segment in a protein can be broken down into two types of motions: internal and external ones. The former is deformation of the segment itself, but the latter involves only rotational and translational motions as a rigid body. Normal Model Analysis (NMA) can derive these two motions, but its application remains limited because it necessitates the gathering of complete structural information. Results. In this work, we present a novel method for predicting two kinds of protein motions in ordered structures. The prediction uses only information ...
Any motion loss can affect daily life. Severe motion loss significantly affects lifestyle and daily living. In this way, the emotional state of a patient suffering severe motion loss can also be affected, sometimes even redefining a sense of personal identity.. When motion loss does occur, early recognition and appropriate treatment is absolutely needed to restore normal motion and improve function and quality of life.. ERMI, Inc. is committed to advancing research in orthopaedic medicine and to understanding the effectiveness of different treatments for severe motion loss patients. Our vision is to Improve Motion, and we strive to work with clinicians, and healthcare professionals in partnership to serve patients and achieve superior outcomes. Get Motion is our call to action to work with deliberate care, focus, and importance.. We created this section on Improving Motion as a destination to help communicate and better inform visitors more about motion loss and ERMI, Inc.. ...
Individual differences in brain metrics, especially connectivity measured with functional MRI, can correlate with differences in motion during data collection. The assumption has been that motion causes artifactual differences in brain connectivity that must and can be corrected. Here we propose that differences in brain connectivity can also represent a neurobiological trait that predisposes to differences in motion. We support this possibility with an analysis of intra- versus intersubject differences in connectivity comparing high- to low-motion subgroups. Intersubject analysis identified a correlate of head motion consisting of reduced distant functional connectivity primarily in the default network in individuals with high head motion. Similar connectivity differences were not found in analysis of intrasubject data. Instead, this correlate of head motion was a stable property in individuals across time. These findings suggest that motion-associated differences in brain connectivity cannot ...
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a)In general. A request for an order must be made by motion. The motion must: (1) Be in writing, unless made during a hearing; (2) State with particularity the grounds for seeking the order; (3) State the relief sought; (4) Unless the relief sought has been agreed to by all parties, be accompanied by affidavits, declarations, or other evidence; and (5) If required by paragraph (c)(4) of this section, include a memorandum of points and authority supporting the movants position. (b)Form. The rules governing captions and other matters of form apply to motions and other requests. (c)Written motion before hearing. (1) A written motion before a hearing must be served with supporting papers, at least 21 days before the time specified for the hearing, with the following exceptions: (i) When the motion may be heard ex parte; (ii) When these rules or an appropriate statute, regulation, or executive order set a different time; or (iii) When an order sets a different time. (2) A written motion served ...
Recovering the relative motion of a moving camera from images is a classic problem in computer vision. In addition to being an important problem in its own right, the successful recovery of camera motion is vital for tasks such as building 3D models, recognition, robot localization, navigation, and map building, just to name a few. The two parts to most motion recovery algorithms are matching, or correspondence, and the estimation of epipolar geometry. The most difficult of these, and arguably one of the most difficult tasks in all of image processing, is in determining correspondence. In fact, one can recover the epipolar geometry of a moving camera without having solved for correspondences perfectly, however even knowing the epipolar geometry does not always ensure a solution to the correspondence problem. While motion estimation is well-studied when the camera motion is relatively small, the problem becomes even more difficult as the camera motions get larger (large rotation or wider baseline). In
Motion Table. PAS president Abdul Hadi Awang has been set a challenge by DAP organising chairman Loke Siew Fook. Sinn Fein tables no-confidence motion in Leo Varadkar over leaked IMO contract The Tanaiste will face a second Dail grilling on Tuesday but retains the backing of his coalition partners. A witness stated the person was making an attempt to sign a patrol automobile for assist. A black man has been charged by sheriffs deputies in Los Angeles on the scene of a automobile crash. table (something) phrase. Such motions are not debatable, although in case of questions of privilege, the chair may feel the need … If your motion carries, the pending question and everything adhering to it-amendments, resolutions to refer it to committee, etc.-are tabled and placed in the charge of the secretary of the assembly. Incidental motions must be considered before the motion that it questions. The appropriate motion would have been to Take from the Table, yes, but once the assembly had started to ...
Following lesions to (usually) the right parietal lobe, patients may fail to report stimuli on their contralesional side if a stimulus is also presented ipsilesionally. The problem can be ameliorated if the stimuli form part of a common action (e.g., a bottle pouring into a glass), when the contralesional item may be brought to awareness. We examined whether this improved awareness depended on implied motion from one object to another. This was tested using pairs of stimuli in which one had implied motion towards or away from the other stimulus. The results showed that patients were more aware of the presence of two objects on trials when one object had implied motion towards the other, compared with when motion was directed away from the second object. This held when the implied motion was in the contralesional as well as when it was in the ipsilesional field. In a single case, this effect held even when the direction of motion could not be explicitly discriminated. The data suggest that motion was
Best Motion Detection Security Cameras Motion Sensor User rating: 4.5/5Published: Feb 08, 2013 Kangaroo Motion Sensor. Check price. Designed for simplicity, the Kangaroo Home Security …Ring Motion-Activated Camera. Check price. Engineered for your enhanced protection, this Ring …Simplisafe Motion Sensor. Learn more about Simplisafe Motion Sensor. Great for pet-owners, this …ADT Motion Sensor. Learn more about ADT Motion Sensor. Designed to be pet-friendly and …See full list on safety.comPeople also askWhat is the best camera for home security?What is the best camera for home security?Protect yourself with the best home security cameras of 2019. After spending 2,500 hours testing smart security devices,our pick for the best home security camera is the Arlo Pro 2because it has a wide variety of features and plenty of cloud storage.The best home security cameras for 2019. Get Price ...
This review considers the management of motion in photon radiation therapy. An overview is given of magnitudes and variability of motion of various structures and organs, and how the motion affects images by producing artifacts and blurring. Imaging of motion is described, including 4DCT and 4DPET. Techniques for monitoring motion in real time by use of surrogates are reviewed. Treatment planning for various motion-management treatment delivery strategies is discussed, including choice of planning image, treatment field margins and dose calculation. Imaging techniques displaying motion in the treatment room for pre-treatment as well as real-time imaging for localization and verification are covered, and their use for various motion-management treatment delivery techniques is discussed. Use of motion management for different treatment sites-breast, lung and other sites-is elaborated, and gating, breath-hold and beam tracking strategies are described. Suggestions are given for breast and lung for ...
Motion retargetting is simply editing existing motions to achieve the desired effect. Since motion is difficult to create from scratch using traditional methods, changing existing motions is a quicker way to obtain the goal motion. This page specifically address the usage of Michael Gleichers Spacetime Constraints motion retargetting method (put link to paper here) to retarget motion captured data to differently proportioned skeletons. The following pages explain the steps we took to retarget motion-capture data and the software we created to do so. The pages also discusses the problems our method addresses by showing show some of our rendered examples, and finally discusses some problems we have yet to address. Any further questions should be directed do Dr. Gleicher.. ...
Consent Agenda:. Commissioner Allen made a motion to approve the December 5th and December 13th Commission minutes. Commissioner Oliver seconded the motion. The motion passed unanimously. Attachment Commissioner Allen made a motion to approve the purchase orders for the Highway department and warrants for all funds. Commissioner Coley seconded the motion. The motion passed unanimously. Attachment Commissioner Allen made a motion to appoint Ben Sands to the Walnut Hill Water Authority. Commissioner Coley seconded the motion. The motion passed unanimously. Attachment. Commissioner Shaw made a motion to appoint Chairman Bill Thweatt to the Alexander City Work Release Center Board of Directors. Commissioner Allen seconded the motion. The motion passed unanimously. Commissioner Allen made a motion to approve the Mutual Assistance Agreement between Tallapoosa County and the Volunteer Fire Department Association. Commissioner Coley seconded the motion. The motion passed unanimously. Attachment ...
Motion Sensors, Inc. Announces ATEX Certified Speed Sensors with Ambient Temperature Rating up to 80C - Apr 28, 2009 - Motion Sensors, Inc.
A method of temporally adaptive filtering of the frames of an image sequence is disclosed. To filter the kth frame, first, the motion trajectories that transverse the pixel locations at the kth frame are determined using a motion estimation algorithm. Motion trajectories pass through a predetermined number of frames neighboring the kth frame. Image values at the neighboring frames, along motion trajectories are then evaluated. Temporally adaptive linear minimum mean square error (LMMSE) estimates of the image values at the pixel locations of the kth frame are determined using the image values along the motion trajectories. These steps are repeated for each of the other frames of the image sequence.
A motion sensor module enables any lighting fixture to become an automated security light. You must disconnect a defective motion sensor module from the electrical power going to the lighting fixture, as well as from the fixture itself. Once you remove the module you can install a replacement.
Can significantly increase the safety level during critical operations and can also be used to collect data for later analysis for statistics purposes as well as storing data for incident and accident investigations. Vessel motion is the main limiting operational and safety parameter when operating vessels offshore. Accurate Motion Monitoring during critical operations can increase the operational window significantly. It can be the main factor leading to a successful operation.. The VMMS will allow the user to monitor and focus on motion parameters rather than significant wave height as the main limiting factor.Interfaces to a range of sensors for accurate monitoring of any point on a vessel.. ...
A VLSI architecture adapted to be implemented in the form of a reusable IP cell and including a motion estimation engine, configured to process a cost function and identify a motion vector which minimizes the cost function, an internal memory configured to store the sets of initial candidate vectors for the blocks of a reference frame, first and second controllers to manage the motion vectors and manage an external frame memory, a reference synchronizer to align, at the input to the estimation engine, the data relevant to the reference blocks with the data relevant to candidate blocks coming from the second controller, and a control unit for timing the units included in the architecture and the external interfacing of the architecture itself.
Abstract: The condition of thermal equilibrium simplifies the theoretical treatment of fluctuations as found in the celebrated Einsteins relation between mobility and diffusivity for Brownian motion. Several recent theories relax the hypothesis of thermal equilibrium resulting in at least two main scenarios. With well separated timescales, as in aging glassy systems, equilibrium Fluctuation-Dissipation Theorem applies at each scale with its own effective temperature. With mixed timescales, as for example in active or granular fluids or in turbulence, temperature is no more well-defined, the dynamical nature of fluctuations fully emerges and a Generalized Fluctuation-Dissipation Theorem (GFDT) applies. Here, we study experimentally the mixed timescale regime by studying fluctuations and linear response in the Brownian motion of a rotating intruder immersed in a vibro-fluidized granular medium. Increasing the packing fraction, the system is moved from a dilute single-timescale regime toward a ...
I think Im running in the foreground. I start the program with motion I thought non-daemon mode required motion -n Could the documentation mean that _beeps_ only work in non-daemon mode? I assumed that it meant _quiet_ only works in non-daemon, so that otherwise it would beep. Thanks. Ill keep playing with it. Jeff On Wed, Feb 6, 2013 at 3:06 AM, Roman Gaufman ,[email protected], wrote: , Ive never heard any beeps but manual says: Only works in non-daemon , mode. - are you running motion in the foreground? - it would use the PC , speaker if anything. , , Sent from my iPad , , On 6 Feb 2013, at 04:34, W. Jeffrey Wilson ,[email protected], wrote: , , Thanks for the responses to my previous (first) question. Heres a simple , one (I hope). , , The config option Quiet is supposed to prevent the output of beeps when , detecting motion. I have never heard a beep, although I run motion with , this option set to Off. I have used Motion with both an older laptop and a , new desktop. Are beeps generated ...
Looking for differential motion? Find out information about differential motion. A mechanism in which the follower has two driving elements; the net motion of the follower is the difference between the motions that would result from... Explanation of differential motion
Despite their importance for biological activity, slower molecular motions beyond the nanosecond range remain poorly understood. We have assembled an unprecedented set of experimental NMR data, comprising up to 27 residual dipolar couplings per amino acid, to define the nature and amplitude of backbone motion in protein G using the Gaussian axial fluctuation model in three dimensions. Slower motions occur in the loops, and in the beta-sheet, and are absent in other regions of the molecule, including the alpha-helix. In the beta-sheet an alternating pattern of dynamics along the peptide sequence is found to form a long-range network of slow motion in the form of a standing wave extending across the beta-sheet, resulting in maximal conformational sampling at the interaction site. The alternating nodes along the sequence match the alternation of strongly hydrophobic side chains buried in the protein core. Confirmation of the motion is provided through extensive cross-validation and by independent ...
LEDs are what they use.. As for the speed of phosphor white LEDs, thats definitely more an issue for high-speed data communication than photography - youre looking at decay times well below a microsecond. If you drive the vibrations at 80 Hz, 1 microsecond is less than 1/10000 duty cycle - which means your light needs to be more than 10000x the intensity of ambient light. This seems impractical except in the darkest rooms, and anyway is faster than needed to freeze motion. Indeed, it may be too fast, and freeze motion too sharply. Theres an argument for having some motion blur on each frame, but less than the total frame-to-frame motion. (Traditional movie cameras had a shutter angle of 180 degrees, which means an exposure of 1/2 frame time, so were definitely culturally acclimated to that value, but its not clear if this is actually optimal for perception of motion.) If you assume 80Hz for the driver, and 79Hz for the strobe, itll go through 1/80th of the cycle per frame, so youd ...
The motion ranges of the tumors in lung for 20 cases were measured 3-dimensionally in Table 2. Fig. 2 shows the motion ranges for each segment of lung as box-and-whisker plots. The margin of the box means 25% from average of Gaussian distribution. The horizontal bar in the center of the box means average and the upper and lower horizontal bars are for the maximum and the minimum motion ranges of the 20 cases. The maximum GTV motion range is about 2 cm. The motion ranges for 4 segments of lung (RUL, RLL, LUL, and LLL) were measured, respectively in the Fig. 3. The average motion ranges were 1.73 mm, 3.52 mm, and 6.39 mm for RL, AP, and CC directions. The results of the motion ranges dependency according to tumor location are shown in Table 3. The tumor motion in RL direction was not shown in Table 3, since RL motion ranges were not normally distributed. The motion ranges of GTVs are statistically significant only for the tumor motion in craniocaudal direction. The average tumor motion range of ...
int led= 13; //LED connected to pin 13 int sensepin= 2; // Arduino Pin connected to OUT of PIR int state=LOW; // Assuming No motion initally int value= 0; // Variable which stores status of the sensor void setup() // Executed once { pinMode(led,OUTPUT); // LED as output pinMode(sensepin, INPUT); // Sensor as input Serial.begin(9600); // Baud Rate : Characters/sec. In this case, bits/sec } void loop() { value= digitalRead(sensepin); // Read PIR value if( value == HIGH) { digitalWrite(led, HIGH); // Turn LED on delay(100); // Delay of 100 milliseconds if( state == LOW) { Serial.println(Motion!); // Motion detected state = HIGH; // Flipping state to HIGH } } else { digitalWrite(led, LOW); // Turn LED off delay(250); // Delay of 250 milliseconds if( state == HIGH) { Serial.println(Motion Stopped); state= LOW; // State flipped back to LOW } } } ...
Portable Motion Speakers. Wave your hand in front of these puppies to raise and lower the volume. Feel good? Then do it again. Now sing. See, instant karaoke disco. Hey, and not only that, but you get a triple colour mood light to add that extra atmosphere. Groovy baby. £49.95.. Motion speakers unique design means they have no buttons what so ever! What, no buttons? Thanks to an integrated motion senor, both the volume and radio frequency can be adjusted by moving your hand up or down within a few inches of the speaker. You also get two 0.7 watt speakers built into the unit, this may not sound like much, but they pack an impressive punch for something this small. The unit can be powered straight from anything with a USB port, including PC, laptop or Mac. If you want to take them to a different location you can.. ...
This invention discloses an interactive exercise monitoring system including a body mounted motion sensor, and a user sensible output indicator indicating to a user an exercise motion parameter derived from an output of the body mounted motion sensor as well as a desired exercise motion parameter for comparison therewith. A method for interactive exercise monitoring is also disclosed.
This is the first clinical description of multiscale motion mapping, a novel computer vision-based approach for quantification of motion in echocardiograms. Based on comprehensive mathematical analysis of digital images, and using strategies similar in several aspects to the human visual system, multiscale motion mapping allows visualization and quantification of true 2D heart motion independent of borders, Doppler, and beam angles. From a single conventional grayscale data set, multiscale motion mapping is able to quantify absolute local velocity, 2D velocity direction, 2D strain rates, and principal axes of strain components.. The ability to objectively quantify heart function is much needed today for a number of reasons. The epidemic of heart failure calls for improved methods to diagnose impaired myocardial function at an early stage, to follow its course quantitatively, and to study the impact of new therapeutic strategies in a noninvasive but objective manner. The ever-increasing ...
It has been well recognized that dynamics is essential for protein function. Local motions such as amino-acid sidechain fluctuations can be studied with various experimental techniques, or predicted in silico by molecular dynamics (MD) simulations. Global motions are more challenging. X-ray cristallography can for instance be used for determining the endpoints of a motion, but the process can prove slow. In principle, MD simulations could also be used for predicting these motions. However, such motions occur on a timescale which is well over the microsecond, that is, the timescale that can be reached nowadays, using standard supercomputers. Apart from MD, another in silico technique has been used for predicting global motions, namely, normal mode analysis (NMA), which has the advantage of being much faster. Actually, NMA was among the very first in silico techniques used for trying to predict the motions of a biomolecule (R. Levy, D. Perahia & M. Karplus, 1982; T. Noguti & N. Go, 1982). At the ...
It looks like it is the original picture corruption problem causing the crash, not the second problem I mentioned. I had temporarily disabled all pictures by setting output_pictures off in case that was the problem, but tried to re-enable it just now to prevent making too many changes at once to help isolate the problem. With output_pictures best set again Motion died again not long after the restart. I changed it back to off and will reboot. I checked and the Amcrest cameras are still on H264 so no problem there. From: Gordon ,[email protected], To: Motion discussion list ,[email protected], Sent: Monday, December 4, 2017 2:36:41 PM Subject: Re: [Motion-user] Preview Picture with Netcam_highres - Distorted Image This may be related to the image corruption but more likely it is related to the problem I describe below. Motion 4.1 terminates and will not restart without a reboot of the system (Ubuntu 16.04 LTS server). Nothing is logged when I try to restart motion with sudo service motion ...
Listings in Range of Motion, Pain Management, Motion Preservation / Motion Limiters, Surgery Equipment / Accessories, OR Table Accessories and Educati...
Create a professional logo motion using Motion v.2 Script, Motion v2 | Masterclass of Motion Graphics| Beginner to Advanced| After Effects 2019.
We consider the motion of a rigid body immersed in an incompressible perfect fluid which occupies a three-dimensional bounded domain. For such a system the Cauchy problem is well-posed locally in time if the initialvelocity of the fluid is in the Hölder space C1,r. In this paper we prove that the smoothness of the motion ofthe rigid body may be only limited by the smoothness of the boundaries (of the body and of the domain). Inparticular for analytic boundaries the motion of the rigid body is analytic (till the classical solution exists andtill the solid does not hit the boundary). Moreover in this case this motion depends smoothly on the initial data ...
A simulator system for use in providing an event simulation to occupants includes a motion base moveable along displacement axes by means of displaceable actuators. Feedback sensors provide signals indicative of the measured displacement of a corresponding actuator. An audio-visual display mechanism is included for providing a sequence of audio and visual images to the occupants. A motion base controller receives the feedback sensor signals and generates actuator drive signals below a cutoff frequency in response to received command signals. A system controller provides the command signals to the motion base controller in synchronization with the presentation of the audio-visual images to the occupants. A mechanism is included for generating supplemental actuator drive signals that have frequencies above the cutoff frequency. A drive signal summing apparatus serially configured with the motion base controller and the actuators receives the actuator drive signals and sums therewith the supplemental
Might it make more sense to do it once we have reduced motion support on Mac though? Why not enhance it progressively? Most of our users are on Windows, and when OSX gets reduced motion support it the reduced motion should just work. , And perhaps in sync with changes to the rest of Firefox FE? Is there a bug for that? Firefoxs tab animation is also different from DevTools, so not sure how much aligning helps. , (Also, the DevTools animation is so subtle I suspect its not particularly important.) This particular feedback came in via survey, making it harder to use the tool for a user with reduced motion need. I also did not see the animation particularly jarring, but would prefer to follow the specs recommendation to remove all non-essential animations ...
back view slow motion back view normal speed left view slow motion...
3 TYPES OF MOTION:1. Rectilinear Motion - Bodies travelling on a straight path.2. Curvilinear Motion - Bodies travelling on a curved path.3. Angular or Rotational Motion - Bodies travelling on a certain angle.

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  • Iqra Khalid , a Liberal Party member of parliament , presented Motion 103 in the House of Commons on December 5, 2016. (
  • [11] Conservative MP Michael Chong pointed out that the House of Commons had previously passed motions that denounced hatred against Jews (on February 22, 2016), Yazidis (on October 25, 2016) and Coptic Christians (on October 17, 2011). (
  • Nickelodeon Kids pick The President is a motion design and illustrations project shared by M A D E B Y R A D I O. As the name suggest, its a series of illustrations and motion design work for the 2016 presidential election in the USA. (
  • Avoiding smoking-even short-term cessation reduces susceptibility to motion sickness. (
  • The factors that contribute to motion sickness are not well understood, but susceptibility to the condition does seem to be partly genetic. (
  • One study compared genetic variations in a large number of people with and without a susceptibility to motion sickness. (
  • Additional research will be necessary to confirm the association between variations in specific genes and motion sickness susceptibility. (
  • Genetic influences on motion sickness susceptibility in adult women: a classical twin study. (
  • While motion sickness may occur at any age, it is more common in children over the age of two, with the majority outgrowing this susceptibility. (
  • In addition, she has written articles including The Relationship of Motion Sickness Susceptibility to Learned Autonomic Control for Symptom Suppression (1982), Autogenic-Feedback Training as a Preventive Method for Space Adaptation Syndrome (1985), and Autogenic-Feedback Training: A Preventive Method for Motion and Space Sickness (1990). (
  • Certain illnesses, especially those with gastrointestinal symptoms, may also increase one's susceptibility to motion sickness. (
  • Several drugs in the antihistamine category also decrease susceptibility to motion sickness, including diphenidol, dimenhydrinate , cyclizine, and meclizine. (
  • If you could get an equation of motion, that would do it. (
  • As Matt (Built on Facts) did a while ago, it can be shown that you can get the equation of motion for a mass on a spring with normal Newtonian mechanics or with Lagrangian mechanics. (
  • Without this acceleration, the object would move in a straight line, according to Newton's laws of motion . (
  • Figure 3: (Left) Ball in circular motion - rope provides centripetal force to keep ball in circle (Right) Rope is cut and ball continues in straight line with velocity at the time of cutting the rope, in accord with Newton's law of inertia, because centripetal force is no longer there. (
  • Classical mechanics is fundamentally based on Newton's laws of motion. (
  • Newton's three laws of motion were the first to accurately provide a mathematical model for understanding orbiting bodies in outer space. (
  • Newton's first law of motion (that an object in motion tends to stay in motion) is true in physics and also seems to apply to physicists running for Congress. (
  • While all five of the body's sensory organs contribute to motion sickness, excess stimulation to the vestibular system within the inner ear (the body's "balance center") has been shown to be one of the primary reasons for this condition. (
  • 50 years are less susceptible to motion sickness. (
  • About 1 in 3 people are considered highly susceptible to motion sickness. (
  • for example, a parent or sibling) who is highly susceptible to motion sickness are more likely than the general public to get motion sick themselves. (
  • Clinical trials have not shown that ondansetron, a drug commonly used as an antiemetic in cancer patients, is effective in the prevention of nausea associated with motion sickness. (
  • Hromatka BS, Tung JY, Kiefer AK, Do CB, Hinds DA, Eriksson N. Genetic variants associated with motion sickness point to roles for inner ear development, neurological processes and glucose homeostasis. (
  • This course concentrates on the tools and techniques you need to make amazing motion designs in Adobe After Effects CC 2019. (
  • Philips Hue Outdoor Motion Sensor lets you control your outdoor lights automatically*-simply walk by to trigger them. (
  • Motion Momentum = mass x velocity Measured in kgm/s, is a vector Work done = energy Force = change in momentum transferred. (
  • In the case of rotation around a fixed axis of a rigid body that is not negligibly small compared to the radius of the path, each particle of the body describes a uniform circular motion with the same angular velocity, but with velocity and acceleration varying with the position with respect to the axis. (
  • Equations of Uniform Motion: If v {\displaystyle \mathbf {v} } = final and initial velocity, t {\displaystyle t} = time, and s {\displaystyle \mathbf {s} } = displacement, then: s = v t {\displaystyle \mathbf {s} =\mathbf {v} t} Modern kinematics developed with study of electromagnetism and refers all velocities v to their ratio to speed of light c. (
  • The students use motion sensors to match graphs of displacement vs. time, velocity vs. time, and acceleration vs. time. (
  • Blending - Velocity of inserted motion block will blend with the previous function block. (
  • Motion Computing was founded in 2001 by a team of former Dell executives including David Altounian and Scott Eckert, who served as CEO of Motion. (
  • Given sufficient stimulus, all people with functional vestibular systems can develop motion sickness. (
  • Motion sickness arises when the vestibular systems of the inner ear send messages about body position or movement that are contradicted by the information sent by the eyes. (
  • Gradually exposing oneself to continuous or repeated motion sickness triggers. (
  • When the device detects movement or motion, it may send signals back to a base device that triggers an alarm. (
  • Researchers believe it is this sensory conflict that triggers the symptoms of motion sickness. (
  • in the second case you are monitoring motion relative to the world's frame of reference. (
  • Motion sensors by themselves are not typically used to monitor device position, but they can be used with other sensors, such as the geomagnetic field sensor, to determine a device's position relative to the world's frame of reference (see Position Sensors for more information). (
  • At the time, Motion was the world's second-leading provider of rugged tablet PCs. (
  • Due to software like Adobe Flash and After Effects, Maxon Cinema 4D, and Apple Motion (part of Final Cut Studio), the number of amateur and professional kinetic typography pieces-from music lyrics to political speeches-has been growing. (
  • Our Poet Laureate, Charles Simic, may share a common title with Andrew Motion, England's laureate, but that's where the job's similarities end. (
  • In The Penguin Book of Elegy , Andrew Motion and Stephen Regan trace the history of this tradition, selecting the best and most significant poems and poets from the Classical roots of elegy, and from its Renaissance revival down to the present day. (
  • As soon as the beam gets interrupted, it may sound the motion sensor alarm. (
  • Combined Motion Sensors - You could also choose a combined motion sensor that is designed to detect all kinds of motion, together. (
  • Wireless Motion Sensor - Wireless motion sensors are mostly used in doors and windows. (
  • Motion Sensor Camera - This detector is designed to capture still images when movement is detected. (
  • Some motion sensor cameras also generate videos. (
  • Is DIY motion sensor alarm easy to use? (
  • If you have another motion sensor/graphing program, that should be sufficient. (
  • This applet is designed to allow you to explore charged particle motion in an electrostatic potential. (
  • Explore animation resources for motion lines. (
  • Explore how a major animation studio is bringing new life to their medium, motion lines and all, using Animate. (
  • Explore a preview version of Reinforcement Learning in Motion right now. (
  • Explore gravity and how forces and motion shape the universe. (
  • Attorneys George Parnham and Wendell Odom, in a motion filed an hour before court offices closed for the Fourth of July holiday, asked a Texas judge to hold a hearing to determine if Andrea Yates is mentally competent to stand trial. (
  • Their motion came hours after Yates' medical records were released to them. (
  • It can amplify subtle motions in a video sequence, allowing for visualization of deformations that would otherwise be invisible. (
  • The resulting motion-magnified images can reveal or emphasize small motions in the original sequence, as we demonstrate with deformations in load-bearing structures, subtle motions or balancing corrections of people, and rigid structures bending under hand pressure. (
  • In physics, motion of massive bodies is described through two related sets of laws of mechanics. (
  • Motions of all large-scale and familiar objects in the universe (such as cars, projectiles, planets, cells, and humans) are described by classical mechanics, whereas the motion of very small atomic and sub-atomic objects is described by quantum mechanics. (
  • Historically, Newton and Euler formulated three laws of classical mechanics: Classical mechanics is used for describing the motion of macroscopic objects, from projectiles to parts of machinery, as well as astronomical objects, such as spacecraft, planets, stars, and galaxies. (
  • Most people, in time, notice a reduction in motion sickness symptoms. (
  • You can, however, create entire projects using the built-in content that comes with Motion, such as preset particle emitters, text, or generators. (
  • The motion passed by a vote of 201-91 on March 23, 2017. (
  • Motion 103 was debated on February 15, 2017. (
  • [6] also on February 15, 2017, Mélanie Joly , the Minister of Canadian Heritage , stated that the Liberal Party caucus was to support Motion 103. (
  • In response to Motion 103 David Anderson , a Conservative member of parliament, tabled an alternative motion on February 16, 2017. (
  • Brownian motion is among the simplest of the continuous-time stochastic (or probabilistic) processes , and it is a limit of both simpler and more complicated stochastic processes (see random walk and Donsker's theorem ). (
  • This is because Brownian motion, whose time derivative is everywhere infinite, is an idealized approximation to actual random physical processes, which always have a finite time scale. (
  • In physics, motion is the phenomenon in which an object changes its position over time. (
  • The motion of a body is observed by attaching a frame of reference to an observer and measuring the change in position of the body relative to that frame with change in time. (
  • Uniform Motion: When an object moves with a constant speed at a particular direction at regular intervals of time it is known as the uniform motion. (
  • Motion sickness is a common problem, with nearly 80% of the general population suffering from it at one time in their lives. (
  • By this time the visible symptoms of motion sickness are well advanced, and feelings of nausea may culminate in vomiting. (
  • A novel measure of motion similarity groups even very small motions according to correlation over time, which often relates to physical cause. (
  • The main advantage here is that you can get some…fairly organic motion, as it records your mouse movement…in real time, as well as being able to quickly…rough out position key frames. (
  • Then learn different methods of animation, including manually animating with keyframes, leveraging the Graph Editor, changing speed with time remapping, motion sketching, and looping with expressions. (
  • With Animate and Character Animator, you're equipped to add motion lines in real time or frame by frame. (
  • To help mitigate the risk of miscommunication, designers have been using kinetic typography to experiment with how time and motion affect the expression of words and seek to draw out more depth from every piece of text. (
  • The Random Motion behavior is useful for creating varied animation paths for large numbers of objects you want to move at the same time. (
  • A mass on a spring will trace out a sinusoidal pattern as a function of time, as will any object vibrating in simple harmonic motion . (
  • Discover our cutting edge motion controller which enables real-time synchronization for high demanding systems. (
  • To find small motions in a video and magnify them, we model the appearance of the input video as translations of the pixel intensities observed in a reference frame. (
  • Naively, this sounds like one might (a) compute the translation from one pixel to the next in each frame, and (b) re-render the video with small motions amplified. (
  • The ideal candidate must have a minimum of 6 years' experience in the repair and service of motion picture or video cameras, or similar digital, IT, or software-based products. (
  • For example, one can talk about the motion of a wave or about the motion of a quantum particle, where the configuration consists of probabilities of occupying specific positions. (
  • The mechanism by which a sensory mismatch could lead to dizziness, nausea, and related symptoms is unclear, and other explanations for motion sickness are also being explored. (
  • When looking at why motion sickness occurs, it is helpful to understand the role of the sensory organs. (
  • Neurons in cortical area MT have a crucial role in representing motion in depth. (
  • The sketches with implied motion, but not those without, strongly activated the motion-sensitive visual cortical areas on both side of the brain, and also elicited weak activity in the cerebellum. (
  • The default setting for Character Animator motion lines is small, thin and subtle. (
  • 1992)‎. Motion de remerciements. (
  • To achieve motion magnification, we need to accurately measure visual motions, and group the pixels to be modified. (
  • After an initial image registration step, we measure motion by a robust analysis of feature point trajectories, and segment pixels based on similarity of position, color, and motion. (
  • An outlier mask marks observations not explained by our layered motion model, and those pixels are simply reproduced on the output from the original registered observations. (
  • Most of the steps of motion magnification relate to reliably estimating motions, and to clustering pixels whose motions should be magnified as a group. (
  • First, motion is the physical movement of pixels, and therefore motion has to be measured in a physical way. (
  • The equations of motion describe the movement of the center of mass of a body. (
  • The Mass in Motion Healthy Dining Program works with local restaurants to make healthy food and drink options available to customers. (
  • Mass in Motion communities work with local restaurant owners to help them meet Healthy Dining nutrition guidelines. (
  • Mass in Motion supports active Communities. (
  • Find out how Mass in Motion is transforming communities across the Commonwealth. (
  • The simple harmonic motion of a mass on a spring is an example of an energy transformation between potential energy and kinetic energy . (
  • In the example below, it is assumed that 2 joules of work has been done to set the mass in motion. (
  • Cities in Motion: German Cities is a new addition to the city-based mass transportation PC-simulation game Cities in Motion. (
  • In physics , uniform circular motion describes the motion of a body traversing a circular path at constant speed . (
  • In the case of uniform circular motion, α will be zero. (
  • Antihistamines commonly used for motion sickness include cyclizine, dimenhydrinate, meclizine, and promethazine (oral and suppository). (
  • It's the little things that can make your life simpler and happier, and your motion graphics work smoother and faster. (
  • What are pet immune motion detectors and how do they work? (
  • What are DIY motion detector alarms and how do they work? (
  • I had to feature the work of Arkuma again, he is a freelance motion artist and graphic designer based in Heidelberg, Germany. (
  • If you have watched the show, you might have noticed the work of Seth Molson who worked on the UI with interactive graphics and motion. (
  • Going into the same lines, we are taking a look at the collaboration work between designers 灰 昼 and 行行珂 Hunk Xing and their motion series: A Dream Within a Dream. (
  • Motion lines connote comic-book action and excitement, an unstoppable type of motion that can't be contained, but one you can capture and add to your work. (
  • perpetual-motion machine, device that would be able to operate continuously and supply useful work, in violation of the laws of thermodynamics . (
  • A machine that would produce more energy in the form of work than is supplied to it in the form of heat would violate the first law of thermodynamics, which is a special case of the law of conservation of energy (see conservation laws , in physics), and is known as a perpetual-motion machine of the first kind. (
  • A machine that would completely convert heat from a warm body into work, without letting any heat flow into a cooler body, would violate the second law of thermodynamics, which is concerned with entropy changes, and is known as a perpetual-motion machine of the second kind. (
  • Hokusai was also fond of depicting water in motion, as is evident from his best-known work, The Great Wave Off Kanagawa . (
  • Having a bit of a nostalgia moment tonight, I was looking for some motion to share on ABDZ and went instead full 80s. (
  • In physics , circular motion is a movement of an object along the circumference of a circle or rotation along a circular path. (
  • I've no idea how to cat the images to motion, even less using find :-D Do you mean that it would be fairly simple to have some ftp push or copy on the same computer that would feed something like a /dev/video0? (
  • Watchmen Motion Comics may contain mature material some viewers might not find suitable. (
  • These are motion detectors that you can construct yourself with a set of accessories you will find in any major electronics store. (
  • Using these tips and tricks, motion graphics designers will find designing to be a more efficient process. (
  • Find en forhandler i nærheden. (
  • 1. Find motion lines in the Behaviours menu. (
  • An object's motion, and thus its momentum, cannot change unless a force acts on the body. (
  • You can also use the Random Motion behavior to add variation to the animation paths created by other behaviors that affect an object's position. (
  • Pure optokinetic motion sickness is caused solely by visual stimuli, or what is seen. (
  • Thanks Bob, As usual you pitch it some new possibilities :-) I guess my main gap in knowledge is how I can get motion to read from a named pipe? (
  • The main quantity that measures the motion of a body is momentum. (
  • Medication-some prescriptions can worsen the nausea of motion sickness. (
  • Using acupressure or magnets is advocated by some to prevent or treat nausea, although scientific data on efficacy of these interventions for preventing motion sickness are lacking. (
  • Motion sickness is the uncomfortable dizziness, nausea, and vomiting that people experience when their sense of balance and equilibrium is disturbed by constant motion. (
  • Motion sickness , sickness induced by motion and characterized by nausea . (
  • Motion sensors and detectors have been around since the seventies and are designed to provide effective security to home owners. (
  • The Android platform provides several sensors that let you monitor the motion of a device. (
  • Table 1 summarizes the motion sensors that are available on the Android platform. (
  • Motion sensors that are supported on the Android platform. (
  • This activity requires motion sensors and is used with LoggerPro by Vernier. (
  • Ego-motion detection and analysis provides useful tool for the navigation of autonomous vehicle. (
  • Motion detection is the ability of the visual system to detect motion in the visual field. (
  • Motion detection in its simplest form takes place in the retina, but more complex processes related to movement perception are thought to involve the extrastriate cortex. (
  • Amusement park rides, skiing, and virtual reality environments can also induce motion sickness. (
  • The authors suggest that the unstable postures in the Hokusai Manga figures act as visual cues that induce the effect of implied motion. (
  • Motion sickness and its symptoms surface when conflicting messages are sent to the central nervous system . (
  • Motion sickness comprises a constellation of symptoms resulting from sudden exposure to periodic unnatural accelerations. (
  • The disorder apparently stems from the contradictory data relayed to the brain during such motions by the eyes and by the balance centre within the nonacoustic portion of the inner ear , which must be functional for symptoms to develop. (
  • In cases of sustained exposure to motion, such as during sea voyages and space missions, many people can adapt to motion sickness after three or four days and feel progressively fewer symptoms. (
  • Please complete this form to get more info about attending 'MOTION' - August 21-23, 2020! (
  • Two new studies reveal a wiring plan that enables motion discrimination in the fly's visual system. (
  • A motion detector is basically designed to detect motion or movement in a designated area and may instantly send a signal to the security alarm system . (
  • Although using antihistamines to treat motion sickness in children is considered off-label, for children aged 2-12 years, dimenhydrinate (Dramamine), 1-1.5 mg/kg per dose, or diphenhydramine (Benadryl), 0.5-1 mg/kg per dose up to 25 mg, can be given 1 hour before travel and every 6 hours during the trip. (
  • My name is Adrian and I'm a freelance motion & sound Designer based in Barcelona since 2005. (
  • The mathematical model of Brownian motion has several real-world applications. (
  • Migraines-people who get migraine headaches are more prone to motion sickness, especially during a migraine. (
  • Motion sickness is a common problem in people traveling by car, train, airplanes, and especially boats. (
  • Motion sickness is more common in some groups of people than in others, for reasons that are not fully understood. (
  • People who have migraine headaches, including a balance disorder called vestibular migraine, have a higher risk of motion sickness than those who do not have these conditions. (
  • People with migraine headaches or M é ni è re's syndrome, however, are more likely than others to have recurrent episodes of motion sickness . (
  • People asked me many times whether it is reliable to use human perception to annotate motion. (
  • There's a clear shift or I would say evolution of interface design that relies more in motion design to make it easier for people to understand how to use the application. (
  • I can calculate the motion of heavenly bodies, but not the madness of people. (
  • Three different types of illlustrations were used: one set depicted people in positions that strongly imply motion, another showed people without implied motion (such as the sketches of the priests above), and a third showed inanimate objects. (
  • For example, if you are reading on your phone while riding a bus, your eyes are focused on something that is not moving, but your inner ear senses motion. (
  • Recently, the venerable tutorial site,, released several free tutorials for creating motion graphics with After Effects CS5. (

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