PSYCH 1XX3 Lecture Notes - Lecture 5: Visual Cortex, Retinal Ganglion Cell, Optic Chiasm
Document Summary
Although some initial processing of visual info is done right in the retina, the place where visual perception all comes together is the brain. Areas along the visual pathways process parts of the visual input before sending those partially t- processed bits of info on to the next set of areas down the line for further processing. Recall that the right and left halves of our visual field are processed by the contralateral side of our brain. Visual input from our right visual field travels along the optic nerve to the left hemisphere and visual input from the left visual field travels along the optic nerve to the right hemisphere. A visual field sends information to both eyes and so each hemisphere receives information from both eyes. Before reaching their respective hemispheres, the axons from the inner region of each retina (region of retina closest to nose) have to cross over to the opposite hemisphere.
