Kinesiology 3480A/B Lecture Notes - Lecture 11: Supplementary Motor Area, Phantom Limb, Posterior Parietal Cortex
19 Oct 2016
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M1 and s1 representation - dr. ramichandra: research by ramichandra who had a long standing patient studied for his homuncular representation. Originally if you have a puff of air on your forehead, bordering the area once occupied by their phantom limb, might feel it on their phantom limb fingers - this was not found in this case. When individuals had puffs on their chin, they felt tingles on their phantom limb: dr. penfield got the organization of the face in relation to the hand wrong, the head should be rotated. 180 degrees: demonstrates the idea of neural plasticity in the m1 and s1, injury can cause unused regions of these structures to become active for another functions. Single cell activation of neurons in awake monkeys. Dr. penfield also thought that neurons associated with different parts of the body will have a strict homuncular representation - these cortical representations will not intermingle with one another, they were highly specialized and organized.
