Kinesiology 1080A/B Lecture Notes - Lecture 14: Scotoma, Visual Cortex, Motor System
5 Apr 2016
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Document Summary
Paients with extensive damage to area vi are regarded as corically blind. Unilateral damage impairs ability to see in the contralateral hemiield a scotoma. Bilateral damage to opic radia should render individual unable to see in either hemiield. Informaion to the vi cannot get there due to a lesion. Right striate cortex surgically removed, corically blind in the let visual ield. Grasping movements are more accurate than eye movements. Averaged aiming responses made by db with his inger towards targets of diferent diameter presented in his blind hemiield. Dynamic visual informaion can bypass using extrageniculate pathway, and use for acion control. Idenify the size of the circle surrounded by an array of red dots. Mask target any informaion originally contained is over writen by keeping the red dots up longer than the original visual simulus. Speed of the reaching is scaled to the appropriate object size. Not conscious movement, but motor system can scale movement.
