ANAT 321 Lecture Notes - Lecture 13: Fusiform Face Area, Two-Streams Hypothesis, Motion Perception

• School: McGill University
• Department: Anatomy & Cell Biology
• Course: ANAT 321
• Professor: David Ragsdale

Document Summary

Aperture problem: moving rectangular object w/lines on it, only looking at object through peephole. Hole not giving all info about movement of object incorrect interpretation about object movement e. g. like barber pole sign. V1/v2: neurons have small rf, only seeing small section like through peephole ; individual neurons can"t accurately predict movement of object. Mt neurons combine small rf in lower levels of visual processing into more complex, complete. Mt neurons have very large rf; lower levels (e. g. v1) have smaller rf. Can move eyes smoothly if object to follow smooth pursuit movements. If no object and told to move eyes in specific direction eyes move in jerks, saccads. Monkey w/lesions in mst: can"t track objects moving in direction of lesion, eyes move in saccads. Human area corresponding to mst: same problem, saccads. Dorsal stream higher order areas involved in connection b/w vision & control of eye movements; & vision & reaching.