PSYC 211 Lecture 6: Week 6
7 Jul 2016
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Document Summary
Activation of neurons, in particular parts of the motor cortex cause movements of particular parts of the body. Somatosensory homunculus: although it is true that stimulating parts of the motor cortex produces a sensation, there are certain parts that have more importance than others. Commands that initiate movement are done by the cerebellum and basal ganglia. Study: prolonged stimulation of specific regions of the cortex causes complex movements. Ex: defensive reactions: emotional behaviors and acting in a particular way. If you stimulate certain parts of the motor cortex, you"ll be able to get a particular type of movement. The primary motor cortex (m1) is the major input of cortical sensorimotor signals and the major output of sensorimotor signals is to the descending motor pathways that initiate movement. The supplementary motor area (sma) is located on the medial surface of the brain. The premotor cortex is located primarily on the lateral surface.
