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Viewer centered coordinate system
Viewer centered coordinate system The projection of an objects shape on the retina depends on the vantage point of the viewer.
RELATED TERMS--------------------------------------
Projection
A defense mechanism, operating unconsciously, in which what is emotionally unacceptable in the self is unconsciously rejected and attributed (projected) to others.
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.
SIMILAR TERMS--------------------------------------
View Road Hospital
The View Road Hospital is a hospital in Singapore.
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Very low birth weight
A baby weighing less than 3.3 pounds at birth is considered very low birthweight, and has a much higher risk of illness.
Viable
Capable of living outside the womb.
Vitamins
Any of a number of complex organic substances found in foods that are essential for normal body functioning.
Ventral pathway
One of two theorized systems of visual information processing. Information though to progress toward the temporal cortex V1-> V2 -> V4 -> IT. Functions for analysis of object qualities such as pattern shapes, size and colors.
Vieth-Muller circle
When the foveal centers are pointed at an object, the range for which images of all other objects fall on corresponding points of zero horizontal disparity. This differs from the perceived range of zero disparity, the Horopter.
Viewer centered coordinate system
Visual angle
A measurement of the area of the retina in degrees subtended by a stimulus. Roughly speaking the width of one's thumb at arm's length is approximately 2 degrees.
Visual phosphene
The visual perception resulting from non-photopic stimulation such as electrical stimulation of the cortex or pressing on the eyeball. Brinkdley & Lewin 1968) and Bak et al (1990) have shown that stimulation of the cortex produces visual pherceptions.
Vitreomacular traction syndrome
A traction-induced visual deficit in which partial posterior vitreous detachment is present in combination with persistent macular adherence.
V5a
Seems to be involved in visually tracking moving target. Projects along with Middle Temporal Area (MT) to the dorsolateral pontine nuclei in the brain stem.
V5
Characterized by strong motion-directionally sensitive neurons with large receptive fields organized into columns. Some neurons respond to the whole rather than the component motion of moving plaid patterns. Implicated in the analysis of movement, and stereoscopic depth. Receives input from layer 4B in V1 and thick stripes in V2. Projects to Medial Superior Temporal Area (MST).
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