PSYB65H3 Lecture Notes - Lecture 9: Parietal Lobe, Achromatopsia, Scotoma
Document Summary
When retinal cells are activated, the synapse along the geniculostriate pathway through the lateral geniculate nucleus. The retinal ganglion cells that leave the retina are segregated by their output and how they"re synapsed within the lateral geniculate nucleus. All this information is segregated along a highway. The left lateral geniculate nucleus is receiving most of it"s input from the right visual field. That input is segregated into different layers. The input differentiates itself depending on which eye is setting the projections. Layers 1, 3, and 6 receive input from the contralateral eye. Layers 2, 4, and 5 receive info from the ipsilateral eye. Information for the most part from the left and right visual fields go to contralateral hemispheres. Conscious experience of vision is mediated by the geniculostriate system. The eye has it"s retinal ganglion cells that synapse to the lateral geniculate nucleus, then project to the striate cortex (primary visual cortex, v1), then to other visual cortical areas.
