PSYA01H3 Chapter Notes - Chapter 6: Visual Cortex, Parahippocampal Gyrus, Extrastriate Body Area
Document Summary
Perception is a rapid, automatic, unconscious process. We recognize the information provided by our sense organs. Visual perception is a hierarchy: neurons analyze certain aspects of information and send the results to other neurons. The surface of the retina is mapped on the surface of the primary visual cortex. Receptive field: neural circuits analyzed various characteristics of their own particular part of the visual field. Ex. some circuits signal the colour of a line, some signal the width, or orientation etc. Visual info analyzed by the primary visual cortex is further analyzed in the visual association cortex. Visual association cortex has 2 pathways: ventral stream: flow of info ends in the lower temporal lobe. Used to form the perception of an object"s shape, colour and orientation (the what system: dorsal stream: flow of into ends in the parietal lobe. Used to form the perception of an object"s 3-d location in space and if it is moving (the where system)
