Chapter 8 - Motor Systems
Collectively, the motor systems are what allow a response to the environment. Some of this response is voluntary and much is involuntary. Our discussion will begin with description of what have been termed "pyramidal" connections between the cerebral cortex and the spinal cord (corticospinal tracts) and brain stem (corticobulbar tracts). We will then discuss the cerebellum and its role in motor processing. The basal ganglia and other portions of what have been termed the "extrapyramidal system" will be considered next and then we will describe control of eye movements. We will finish with a brief discussion of the regions of the brain involved in initiation of movement.