PSYCH 202 Lecture Notes - Lecture 8: Visual Cortex, Retinal Ganglion Cell, Visual Processing
Document Summary
Striate cortex contains a map of the contralateral visual field. More space in brain for focus information (what you"re looking at attentively) Each retinal ganglion cell responds to its own receptive field. Lgn neurons receive information from multiple retinal ganglion cells. Striate neurons receive information from multiple lgn neurons. Integration allows for visual perception of orientation, movement, depth and color. *visual processing in the striate cortex - orientation & movement. Orientation-sensitive neurons only respond to objects in a particular spatial placement. Simple cells -- detect orientation (direction of line; horizontal, vertical, slanted) Complex cells -- detect orientation and movement. *visual processing in the striate cortex - depth. Binocular vision provides the most acute depth-perception. Stereopsis: retinal disparity (tiny difference in image that is falling on both retinas of same object; difference when you close one eye and then the other) Binocular cells in the visual cortex respond strongly to retinal disparity. *visual processing in the striate cortex - color.
