PSYC 1100 Lecture Notes - Lecture 16: Visual Cortex, Two-Streams Hypothesis, Receptive Field

• School: UConn
• Department: Psychological Sciences
• Course: PSYC 1100
• Professor: Harvey Swadlow

Document Summary

Receptive field of a sensory neuron-- region of the receptor surface from which the neuron is either excited or inhibited. Hubel and weisel"s hierarchical, feature detection (recognizing things by breaking down its features) model of form perception: Retinal neurons and lgn cells respond to spot of light and dark with a surrounding region of the opposite sign. Concentric-- receptive field arrangement where the surrounding regions have the opposite charge/ sign. Turns out cells in cortex don"t respond to spots of lights or darkness. They respond to simple cells-- cells that respond to bars of light or darkness in a receptive field. Get the best response when a light bar is next to a dark bar. Visual cortical neurons respond to different orientations of simple cells (orientation selective) Complex cells-- cells of v1 that respond to light or dark bars over a broad area. Hypercomplex cells-- cells that respond to bars of limited length.