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Haptic perception (Greek: haptόs "palpable", haptikόs "suitable for touch") means literally the ability "to grasp something", and is also known as stereognosis. Perception in this case is achieved through the active exploration of surfaces and objects by a moving subject, as opposed to passive contact by a static subject during tactile perception. [1]
Apperceptive agnosia is failure of object recognition even when the basic visual functions (acuity, color, motion) and other mental processing, such as language and intelligence, are normal. [9] The brain must correctly integrate features such as edges, light intensity, and color from sensory information to form a complete percept of an object.
OKR is also commonly used in basic science as an objective measure of acuity in animal disease models. In neurobiology, the isolation of the AOS from other visual pathways, its clear connection to a behavioral readout in the form of OKR, and its conservation across species make it an attractive model system to study.
Ethanol consumption can disrupt the VOR, reducing dynamic visual acuity. [20] In normal conditions, the cupula and the endolymph are equal in density (both are ). After ingesting ethanol, the ethanol diffuses into the cupula before it diffuses into the endolymph, because it is closer to blood capillaries. This makes the cupula temporarily lighter.
The somatosensory system is the nervous system pathway that is responsible for this essential survival ability used in adaptation. [1] There are various types of tactile discrimination. One of the most well known and most researched is two-point discrimination , the ability to differentiate between two different tactile stimuli which are ...
In the late 1960s and early 1970s, Cornsweet was a key member of the Bioinformation Systems Group at the Stanford Research Institute (SRI). While also teaching in the psychology department at Stanford University, he designed or co-designed several innovative instruments for measuring properties of the eye, including eyetrackers, [9] auto-refractors, [10] and optical fundus scanners.
The tectopulvinar pathway is a fast-acting pathway that provides the viewer with information on the absolute spatial information of objects. The pathway plays a large role in directing visual spatial attention and is particularly responsive to novel stimuli that appear or move in peripheral vision; however, because it receives mostly magnocellular visual input, the tectopulvinar pathway is not ...
Perceptual narrowing is a developmental process during which the brain uses environmental experiences to shape perceptual abilities. This process improves the perception of things that people experience often and causes them to experience a decline in the ability to perceive some things to which they are not often exposed.