NROC64H3 Lecture Notes - Lecture 3: Lightdark, Fusiform Gyrus, Anosognosia
19 Oct 2013
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Document Summary
How do bipolar cells in the fovea (and elsewhere) differ as to how they are activated / inhibited by light: on center vs off center bipolar cells. On center cells fire action potentials when light is on it: dark in center, surrounded by light. Off center cells fire action potentials when dark is on it light in center: surrounded by darkness. Neurons in the visual systems: neural processing resulting in perception. Parallel pathway serving conscious visual perception originate in the retina: progress to lateral geniculate nucleus (lgn) Neuronal receptive fields: sensitive to different facets of the visual input. The norwegian silly crab the major events in the life of a crab foe food love. No green necessary in upper visual field (no food sources in sky) No motion detection necessary in lower visual field (no predators on the ground) Pink detection in upper and lower visual field (essential for reproduction / survival) Visual deficits from neurons to face perception.
