PSYC 363 Lecture Notes - Lecture 17: Binocular Disparity, Depth Perception, Horopter

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Light from a 3d world falls on a 2d retina. Features of the environment gives us clues to depth: binocular depth cues, monocular depth cues. Also, have info about where eyes are directed: oculomotor cues. To keep an image on both foveae, must orient each eye to object separately. Convergence and accomodation rely on muscle tension. Central nervous system keeps track of muscle tension. Binocular (retinal) disparity = we have two images of the world, one in each eye: greater for close objects, less for faraway objects. Two slightly different images one to each retina. View master example: corresponding points in each slide will fall on noncorresponding points on two retina (disparity between two images) Binocular disparity (elaborate with book potential 5 pt question) Horopter imaginary line at distance of focal point. Image will fall on different points on retina i. e. , disparity (=not at the same place in the retina, giving the sense of 3d)

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