PSYA01H3 : CHAPTER 6- PERCEPTION.docx
Document Summary
Perception: rapid, automatic unconscious process by which we recognize what is represented by the information provided by our sense organs. Hubel and wiesel experiment unconscious animals with open eyes, still brain activity with pictures being shown to them. Concluded geography of visual field is retained in the primary visual cortex. Map on brain is distorted giving most space to the centre of visual field. Map is like mosaic made up of tiles/modules. Module: block of cortical tissue that receive info from same group of receptor cells. All neurons within module receive info from the same small region of the retina, primary cortex contains 2500 modules. Each module receives info from small region of one retina, it receives info from a small region of the visual field. Visual info analyzed by primary is further analyzed by the association. Investigators discovered more than two dozen distinct regions and subregions of visual cortex of a rhesus monkey.
