PSYC 106 Lecture Notes - Lecture 12: Fusiform Face Area, Ocular Dominance, Inferior Temporal Gyrus
Document Summary
Lgn (lateral geniculate nucleus) in thalamus composed for 6 layers, alternating ones for left and right eyes. Humans have 3 types of layers: magnocellular layer (corresponds to m ganglion cells): rod input, necessary for the perception of movement, depth, and small differences in brightness. Bottom 2 layers of lgn (one layer for each eye: parvocellular layer (corresponds to p ganglion cells): cones (red and green), necessary for color and form perception. Upper 4 layers of lgn: koniocelllular layer: blue cones located between each m and p layer. Why stop here? only 10% of inputs come from retina, 90% come from cortex lots of info coming from brain that filters info coming from retina. Lgn to primary visual cortex (striate cortex or v1)- first place where visual info components are put back together: v1 feedback to lgn. Input from lgn comes into layer 4, but differences in which layer the p and m cells come into.
