ARCH 131 Study Guide - Final Guide: Implicit Memory, Transcranial Magnetic Stimulation, Motor Goal

• School: Simon Fraser University
• Department: Archaeology
• Course: ARCH 131
• Professor: Hugo Cardoso

Document Summary

Motor behaviour refers to the movements of the body produced as a consequence of contractions of skeletal muscles (glands). The terms voluntary and involuntary are relatively useless implies a degree of conscious cognitive control that may or may not be present. Sherrington (1800"s) studied spinal reflexes highly specific, repeatable, unlearned movement patterns present in the spinal cord. Gave rise to the view of reflex as a basic unit of behaviour, and that all behaviours were simply a long string of reflexes, with each reflex providing the stimulus to start the next. Later detailed studies of movement errors revealed a more hierarchical system, in which higher levels execute a motor plan, calling on lower units as needed. Thus, the stimulus to produce each behavioural unit comes from higher level processing, not the preceding movement. There are 6 categories in the hierarchy: simple reflexes. Usually spinal (e. g. knee jerk) but not always (pupillary constriction). Usually involve only a few synapses: postural adjustments.