- 行业: Education
- Number of terms: 1674
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The University of Illinois at Chicago (UIC) is a public university located on three urban campuses in Chicago. UIC ranks in the top 50 US institutions with strong research programs. The university boasts one of the largest medical schools in the US and operates Illinois’ major public medical center ...
Condition of having three functioning cone types where one or more of the cones has abnormal spectral sensitivity. Anomalous trichromats, like normal subjects, require three primaries for color matching but will accept matches that normal subjects will reject.
Industry:Physics
The loss of visual capacity in one half of the visual field, typically due to damage to primary visual cortex. (Strictly speaking this type of visual field defect is a homonymous hemianopia. ) Because each half of the visual field is represented by the contralateral side of the brain, damage to one side of the brain will result in the loss of visual capacity in the opposite side of the visual field.
Industry:Physics
One of the two main neural pathways from the retina to the primary visual cortex (the other is the parvocellular pathway). The magnocellular pathway is not thought to play an important role in color vision.
Industry:Physics
Ganglion cells, found in the primate retina, that are thought to be the origin of the parvocellular pathway. Also referred to as P cells, midget cells, or B cells. They are analogous to the well-studied ganglion cells of the cat retina known as X cells or cells.
Industry:Physics
The condition of possessing only a single channel for conveying information about color. Monochromats are strictly color blind and perceive only variations in brightness.
Industry:Physics
Laws governing the results of additive color matching experiments (see additive mixture). Grassman's laws assert the existence of exactly three dimensions of variation in perceived color, e.g. hue, brightness, and saturation. They also imply the linear additivity of color matches, a fact of importance to colorimetry. Thus if stimulus a matches stimulus b, and stimulus c matches stimulus d, then the additive mixture of a and c will match the mixture of b and d irrespective of the stimuli's spectral composition.
Industry:Physics
Photopigment utilizing 3,4 dehydroretinal instead of retinal as its chromophore. This substitution has the effect of shifting peak absorption to longer wavelengths.
Industry:Physics
Vision under relatively low light levels when the visual response is primarily controlled by the rods.
Industry:Physics
