PSYC 2390 Lecture Notes - Lecture 8: Optic Chiasm, Retinal Ganglion Cell, Lateral Geniculate Nucleus
Document Summary
Neural coding (from the eye to the brain) Right side of image ends up in the left visual field. Left side of image ends up in the right visual field. Retinotopic map: things close together on an object and on the retina will activate neurons that are close together in the brain and vice versa. Cortical magnification: more space is allocated to locations near the fovea than to locations in the peripheral retina (the small area of the fovea is represented by a large area on the visual cortex) Feedforward info taken from the eye to the brain (bottom-up processing) Feedback info taken from the higher brain to the lower brain (top-down processing: our expectations and beliefs drive what we see. Specificity coding: one cell that responds only to one object and no other objects. Only neuron 1 responds to bill"s face, only neuron 2 responds to mary"s face, etc.
