PSYC 2220 Lecture Notes - Lecture 7: Optical Flow, Mirror Neuron, Illusory Motion
8 Apr 2017
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Document Summary
Ecological approach to perception: focuses on studying moving observers and on determining how their movement creates perceptual info that both guides further movement and helps observer perceive the environment. Gibson felt that traditional lab research on perception was: Too artificial - observers were not allowed to move their heads. Unable to provide an explanation for how pilots used environmental information to land airplanes. Optic array: structure created by the surfaces, textures, and contours in the environment (its what you see) Optic flow: appearance of objects as the observer moves past them. Two main things the optic flow tells is where we are heading and how fast we are moving. Gradient flow: difference in flow as a function of distance from the observer. Optic flow is more rapid near the moving observer. Focus of expansion: point in distance where there is no flow. Self-produced information: flow is created by the movement of the observer.
