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BIOL 2P94 (40)
Lecture

Lecture 39

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Department
Biology
Course
BIOL 2P94
Professor
Dirk De Clercq
Semester
Fall

Description
Outline of Lecture 39 (03-06 B; Shadmehr) Motor System IV – Motor Cortex I. Functions and properties of premotor cortex, motor cortex, and supplementary motor area - The premotor cortex codes object position with respect to arm, independent of fixation point and hand configuration - Primary motor cortex is sensitive to forces needed to perform a reaching movement - Like the somatosensory cortex, the motor cortex has a somatotopic map - The motor map can change after amputation, a result of loss of strength of inhibitory interneurons connecting two areas in the motor cortex - Following amputation, the size of the motor region bordering amputated region enlarges; phantom limb pain may be a result of size imbalance between the two hemispheres - Following a lesion of a motor region, forced use of damaged r
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