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13 Cards in this Set
- Front
- Back
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Achromatism
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Total color blindness due to congenital absence of cone cells
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Abscissa
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The x-axis. The independent variable is plotted on the abscissa.
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Absolute threshold
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the lowest level of intensity of a stimulus at which its presence or absence can be correctly detected 50% of the time.
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size constancy
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the tendency to perceive an object as of the same size in spite of variations in retinal image size, which occur when we move away from an object.
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Counterconditioning
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The weakening or elimination of a conditioned response by the learning of a new response that is incompatible with, and stronger than, the one to be extinguished. It is used in therapy to replace unacceptable responses with acceptable ones.
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6 Cues of Depth Perception
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-Interposition (Overlap)
-Relative Size -Linear perspective -Texture gradients -Motion parallax -Binocular disparity (Stereopsis) |
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Interposition (Overlap)
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If one object covers another, the partially hidden object is seen farther away
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Relative size
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Comparison of retinal size of object to actual size of objects gives cue to depth
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Linear perspective
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Parallel lines appear to converge as they recede into the distance
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Texture gradients
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As scene recedes from viewer, the surface texture of the object appears to change
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Motion parallax
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When observer moves, objects in a stationary environment appear to move relative to distance from observer
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Binocular disparity (Stereopsis)
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Each eye sees a slightly different scene; when the brain combines the scenes, we get perception of depth
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What's the difference between Top-Down and Bottom-Up Processing?
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Top-down (Conceptually driven) is guided by conceptual processes such as memories and expectations that allow the brain to recognize whole objects THEN components.
Bottom-up (Data-driven) responds to parts on the basis of fixed rules and then sums up components to arrive at a whole pattern. |
