CAS PS 231 Lecture Notes - Lecture 2: Visual Cortex, Autoreceptor, Lateral Geniculate Nucleus
4 Dec 2014
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Sensory receptor: specialized neuron that detects a perticular category of physical events. Sensory transduction: process by which sensory stimuli are transducer into slow, graded receptor potentials. Receptor potentials: a slow, graded electrical potential produced by. Path rods/cones (photoreceptors) >bipolar >ganglion >send axonal projections to optic nerve into brain. Horizontal cell: regulate info from photoreceptors (which ones will be inactive/active/condition) Amacrine cell: regulates what info is sent to ganglion cell from bipolar. Many rods that converge onto one bipolar cell. Fovea: divid in retina where center vision is. Pathway of light from retina to v1 ganglion cells >optic nerve >lateral geniculate nucleus (in the. Cells in v1 have similar on/off center receptive fields. Simple cells depends on orientation of light preference for horizontal light or different cell that prefers oblique/diagonal. Complex cells orient dependent but on/off centers don"t matter. End-stopped cells able to tell you when something ends, strong response when edge is near but not in inhibitory end field.
