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| This glossary contains: 19186 medical terms |
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APB
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APB 2-amino-4-phosoponobutyrate. When selectively applied to the mud puppy retina the On-bipolars, On-amicrines and On-ganglion cells become unresponsive to light, whereas the Off-cells retain their response properties. Allows for the study of the Off-cell pathway in isolation. Major finding is that the center-surround antagonism of Off-center retinal ganglion cells is not significantly altered suggesting that it is not a product of the interaction between On and Off cells.
RELATED TERMS--------------------------------------
Retina
A membrane lining the inside of the back of the eye that contains light-sensitive nerve cells that convert focused light into nerve impulses, making vision possible.
Isolation
A defense mechanism operating unconsciously central to obsessive-compulsive phenomena in which the affect is detached from an idea and rendered unconscious, leaving the conscious idea colorless and emotionally neutral.
Center-surround
A type of spatial receptive field structure in which the central region of the receptive field and the Surround portion influence cell activities in different ways e.g. ON-center, OFF-Surround
Retinal
Light-absorbing portion of rhodopsin. The absorption of light causes retinal to change from 11-cis to 11-trans configuration
Ganglion
A cluster of nerve cells.
SIMILAR TERMS--------------------------------------
PREVIOUS AND NEXT TERMS--------------------------------------
Anchoring
In any scene, the object which is the lightest is perceived as being white, or is 'anchored' to white.
Angle of incidence
Angle between an incident ray of light and the perpendicular to a surface.
Angle of reflection
Angle between a reflected ray of light and the perpendicular reflecting surface.
Angle of refraction
Angle between a refracted ray of light and the perpendicular to the refracting surface.
Anisotropic
Any process or filter which is directionally selective or biased. (As opposed to Isotropic).
APB
Aperture problem
Any motion detecting device with a field of view which is small relative to an edge moving through it can only detect the component of velocity at right angles to the edge, while the component parallel to the edge is invisible.
Apparent motion
A observer presented with a display in which two items (lines, dots) in different locations are alternately exposed at certain interstimulus intervals will report seeing the item move from the first position to the second position. Illusion depends on the spatial separation, luminance and duration of the items.
Area 17
One of Broadman's areas.
Area 7A
Monkey parietal cortex.
Area centralis
Area in a vertebrate retina rich in cones, with little pooling of receptor outputs. In the human eye, the area centralis corresponds to the fovea, but this in not so in all species.
RELATED TERMS--------------------------------------
Retina
A membrane lining the inside of the back of the eye that contains light-sensitive nerve cells that convert focused light into nerve impulses, making vision possible.
Isolation
A defense mechanism operating unconsciously central to obsessive-compulsive phenomena in which the affect is detached from an idea and rendered unconscious, leaving the conscious idea colorless and emotionally neutral.
Center-surround
A type of spatial receptive field structure in which the central region of the receptive field and the Surround portion influence cell activities in different ways e.g. ON-center, OFF-Surround
Retinal
Light-absorbing portion of rhodopsin. The absorption of light causes retinal to change from 11-cis to 11-trans configuration
Ganglion
A cluster of nerve cells.
SIMILAR TERMS--------------------------------------
PREVIOUS AND NEXT TERMS--------------------------------------
Anchoring
In any scene, the object which is the lightest is perceived as being white, or is 'anchored' to white.
Angle of incidence
Angle between an incident ray of light and the perpendicular to a surface.
Angle of reflection
Angle between a reflected ray of light and the perpendicular reflecting surface.
Angle of refraction
Angle between a refracted ray of light and the perpendicular to the refracting surface.
Anisotropic
Any process or filter which is directionally selective or biased. (As opposed to Isotropic).
APB
Aperture problem
Any motion detecting device with a field of view which is small relative to an edge moving through it can only detect the component of velocity at right angles to the edge, while the component parallel to the edge is invisible.
Apparent motion
A observer presented with a display in which two items (lines, dots) in different locations are alternately exposed at certain interstimulus intervals will report seeing the item move from the first position to the second position. Illusion depends on the spatial separation, luminance and duration of the items.
Area 17
One of Broadman's areas.
Area 7A
Monkey parietal cortex.
Area centralis
Area in a vertebrate retina rich in cones, with little pooling of receptor outputs. In the human eye, the area centralis corresponds to the fovea, but this in not so in all species.
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This dictionary contains 19186 terms.
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