NROC64H3 Chapter Notes - Chapter 10: Prosopagnosia, Parietal Lobe, Motion Perception
Document Summary
Retina extracts information about different facets of the visual image. More than 100 million photoreceptors in the retina but only 1 million axons leaving the eye carrying info to the rest of the brain. Pathway leaving conscious visual perception includes the lgn of the thalamus and the primary visual cortex (area 17), v1 or striate cortex. Retinofugal projection - neural pathway that leaves the eye beginning with the optic nerve: centrifugal projection = away from the center, corticogugal projection goes away from the cortex. The optic nerve, optic chiasm and optic tract: Ganglion axons pass through three structures before reaching the brain stem. Components are: optic nerve optic chiasm optic tract. Optic nerves exit the right and left eyes at the optic disks and pass through holes in the floor of the skull. Optic tracts axons form these tracts which run just under the pia along the lateral surfaces of the diencephalon.
