PSYB51H3 Chapter 7: PSYB51 Detailed chapter notes (Chapter 7)
19 Jul 2011
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Shape, location in space, color fundamental perceptual dimensions. Motion as a low-level perceptual phenomenon cells in primary visual cortex selectively respond to motion in one particular direction. The illusion of motion of a stationary object that occurs after prolonged exposure to a moving object. Just as color after effects are caused by opponent processes for color vision, the motion aftereffect is caused by opponent processes for motion detection. Barlow and levick: and gate cell x fires if and only if both its inputs (b and d) are firing simultaneously, and it passes this message on to the motion detection cell. adelson and bergen (more elaborate version): based on linear filters that delay, sum, and then are followed by nonlinearities seems closer to the truth. Our motion detector is velocity sensitive in their direction sensitive. One possible objection to this neuronal circuit is that it does not, in fact, require.
