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Definition
| organization of the visual field into objects (figures) that stand out from their surroundings (ground) |
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| depth cues such as retinal disparity and convergence that depend on the use of two eyes |
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| binocular cue; extent to which the eyes converge inward when looking at an object, the greater the inward strain, the closer the object |
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| binocular cue; by comparing images from the two eyeballs, the brain computes distance; the greater the disparity btwn two images, the closer the object |
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| depth cues, such as an interposition and linear perspective, available to either eye alone |
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| assuming two objects are similar in size, we perceive the one that casts the smaller retinal image as farther away |
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| if one object partially blocks our view of another, we perceive it as closer |
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| parallel lines appear to converge with distance |
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| b/c light from distant objects passes through more atmosphere, we perceive hazy objects as farther away |
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| gradual change from a coarse/distinct texture to a fine/indistinct texture signals increasing distance; objects far away appear smaller and more densely packed |
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| we perceive objects higher in our field of vision as farther away |
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| relative motion (motion parallax) |
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| as we move, objects that are actually stable may appear to move; the nearer the object is to you, the faster it seems to move |
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| relative brightness (shading) |
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| nearby objects reflect more light to our eyes; given two ident. objects, the dimmer one seems farther away |
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| an illusion of movement created when two or more adjacent lights blink on and off in quick succession |
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| perceiving objects as unchanging (in lightness, color, shape, size) even as illumination and retinal images change |
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| in vision, the ability to adjust to an artificially displaced or even inverted visual field |
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| lab device for testing depth perception in infants and young animals |
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| theory that opposing retinal processes (red/green, yellow/blue, white/black) enable color vision |
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| Young-Helmholtz trichromatic theory |
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| theory that retina contains three different color receptors- one most to red, green, blue; which when stimulated in combination can produce the perception of any color |
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Term
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Definition
| after tiring neural responses to black/green/yellow,you should see their opponent colors |
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