PSYC55H3 Lecture Notes - Striatum, Thalamus, Indirect Pathway Of Movement
Document Summary
Cerebellum and basal ganglia (subcortical regions) are heavily involved in feedback and adjusting motor. Motor cortex is most critical region for motor movements and output is most. Middle cerebral artery strokes cause most problems with motor cortex. Finer the movement, the greater the representation within motor cortex: even if motor cortex is lesioned, reflexive movement is generally intact or even hyperactive, motor cortex very important for voluntary movements, not involuntary. ** research on georgopoulous experiment with motor cortex. Meaning this is the preferred durectuin for the cell : each individual cell is directionally sensitive, codes movement in only one direction, all cells within same column all have the same selective direction. If you move across columns, you see the directional sensitivity shifts in a systematic way. Slight shift as you move columns across: the cell still does fire in other directions though, but most to a particular direction.
