21-depth-perception - (4 Horopter(5 Random dot stereogram 2...

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Psychology 3040/6014 Spring, 2008 DEPTH PERCEPTION 1) Cue theory a) Oculomotor cues i) Convergence ii) Accommodation b) Monocular cues i) Occlusion ii) Relative vertical position iii) Shadows iv) Relative size v) Familiar (template) size vi) Atmospheric perception vii) Texture gradient viii) Highlight cues ix) Parallax x) Deletion/accretion (occlusion) 1 of 4
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Psychology 3040/6014 Spring, 2008 c) Binocular cues i) Convergence of eyes ii) Binocular disparity (1) Disparity leads to stereopsis (2) Separation can be done by (a) Physically separate images presented (b) Different colored images (c) Polarization (3) Computation of depth from disparity
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Unformatted text preview: (4) Horopter (5) Random dot stereogram 2 of 4 Psychology 3040/6014 Spring, 2008 2) Neural basis of depth perception a) Disparity detectors in striate cortex (V1) i) Fixation plane ii) “nearer” detectors iii) “farther” detectors iv) also: present in: (1) dorsal (where/how) pathway (V2, MT) (2) ventral (what) pathway b) Stereoblindness c) Development of stereopsis 3 of 4 Psychology 3040/6014 Spring, 2008 3) Interaction of cues a) Constructivist approach b) Gibson’s Direct Perception approach c) One cue vs. another? 4 of 4...
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