NSCI 324 Study Guide - Midterm Guide: Simple Cell, Emergency Vehicle Lighting, Pyramidal Cell
19 Mar 2017
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Targets of retinal ganglion cells: hypothalamus: for the regulation of circadian rhythms. For example; a stroke in the parietal cortex will affect the upper part of meyers loop and thus affect vision in the lower visual field. A stroke in the temporal cortex will affect the lower part of meyers loop and will thus affect visual information in the upper field. From the lgn to the cortex and v1: cortical areas have 6 layers (neocortex, output neurons (pyramidal neurons) have long axons. Inputs of the lgn go to layer 4. The interneurons in layer 4 distributes the signal up and down the cortex corticocortical interneurons project up to other areas of the cortex corticothalamic interneurons project down back to the lgn where visual input is coming in. Visual line orientation and cell firing: hubel and weiss 1960s: different neurons fire differently depending on the orientation of the line being viewed.
