PSYC 212 Lecture Notes - Lecture 6: David H. Hubel, Foveal, Torsten Wiesel

• School: McGill University
• Department: Psychology
• Course: PSYC 212
• Professor: Mathieu Roy

Document Summary

Respond best to large from m ganglion rgcs. Smaller cells = receive input from p ganglion rgcs. 3 properties of lgn-lateral geniculate nucleus: controlateral representation. Left lgn receives info from right visual field/ Right lgn receives info from left visual field: each lgn layer, within each layer of lgn. Receives signal from 1 eye only *1 layer = 1 eye. Neurons = arranged in retinotopic map of visual field so rgcs w/ Adjacent receptive fields connect to adjacent neurons in lgn. Inputs from 2 eyes & from midget+parasol cells = segregated in distinct layers of lgn: 2 eyes remain separate in lgn. Project to layer 2 - 3 - 5. Project to layer 1 - 4 - 6: m & p pathways remain separate in lgn. Retinotopic maps = topographically organized every area of retina = correspond to area in lgn. & maps aligned in all layers even if correspond to different.