PSC 101 Lecture Notes - Lecture 7: Temporal Lobe, Fusiform Face Area, Motion Perception
28 Aug 2018
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In the dark rods and cones have open na+ channels: the g-protein coupled opsins cause the na+ channels to close resulting in hyperpolarization of the cell. Geniculate nucleus (lgn: visual field and optic chiasm, at optic chiasm info begins to organize by visual field, left lgn contains from the right visual field, organization stays consistent as info is passed to visual cortex. simple cells can fire in response to a line of a particular orientation rather than a dot. Info from different layers of lgn serve as input to different layers of cortex: parvocellular lgn inputs to layer 4cb, magnocellular units to 4ca, koniocellular inputs to layer 2 and 3 blobs, receptive fields: striate cortex. complex cells: can be motion sensitive, clicker question, receptive fields in striate cortex, are larger than those in lgn, can encode for motion, can receive input from multiple lgn neurons, can encode for color.
