PSYC 2410 Chapter Notes - Chapter 9: Posterior Parietal Cortex, Apraxia, Motor Neuron
16 Jun 2019
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Document Summary
Association cortex - president of the sensorimotor system. Motor neurons and muscles - lower levels of the sensorimotor system. Sensory input - motor output is guided by. External world - the sensorimotor system carefully monitors the. Ballistic - only these movements are not guided by sensory feedback. Well learned tasks - after much practice, lower levels perform these tasks with little higher involvement. Efficient companies - the sensorimotor system has a lot in common with. General model of sensorimotor function - hierarchical, functionally segregated, parallel, feedback circuits. Posterior parietal cortex - provides info on where body parts are in relation to the external world. Secondary motor cortex - output from the posterior parietal cortex goes to the. Visual, auditory and somatosensory systems - the posterior parietal cortex receives input from the. Apraxia - inability to perform movements on command. Large parietal lesions - apraxia is produced by. Contralateral neglect - fail to respond to visual, auditory or somatosensory stimuli.
