PSYB51H3 Chapter 7: Chapter 7 textbook notes
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Chapter 7: motion perception: motion aftereffect (mae): illusion of motion in a stationary object. Results from rapid change between objects that appear in diff places in rapid succession: sigmund exner"s spark light experiment in 1875. to detect direction a neuron must integrate info from many local motion detectors. monkeys fully trained could recognize the correlated motion when only. 2-3% of dots were moving in this direction. monkeys pointed for motion in preferred direction even though dots were moving in opposite direction. Some rays strike our retinas enabling us to see: optic flow: changing angular positions of points in a perspective image that we experience as we move through the world. Focus of expansion is one aspect of optic flow: biological motion: the pattern of movement of living beings (humans & animals) Ttc= distance/rate: tau: information in the optic flow that could signal ttc w. o estimating absolute distances or rates.
