PSYC 211 Lecture Notes - Lecture 22: Fusiform Gyrus, Motion Perception, Optical Flow
16 Mar 2017
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Document Summary
The extrastriate cortex is a layer of neurons that surround the striate cortex. It consists of several regions that form independent maps. Each region responds to specific features of the visual environment. Outputs of striate cortex (area v1) are sent to areas of extrastriate cortex (area v2/v3/mt) in a hierarchical fashion. What" and where" visual streams (ungerleider and mishkin, 1982) The ventral stream recognizes what the object is and its color. The dorsal stream recognizes where the object is and whether it is moving. The inferior temporal (it) cortex (the end point of the ventral visual stream) consists of area te area teo. The analysis of visual information is hierarchical; the receptive fields of neurons increase in successive regions as the visual image becomes more complex. The receptive field of neurons in area te are larger than those of area teo.
