NROC64H3 Chapter Notes - Chapter 14: Vestibular Nuclei, Striatum, Lobe (Anatomy)
17 Mar 2012
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Document Summary
Final common pathway for behaviour is alpha motor neuron, and this activity is under the control of sensory feedback and spinal interneurons, and that reflex movements reveal the complexity of spinal control system. Central motor system is arranged as hierarchy of control levels, forebrain-top, spinal crd-bottom. Highest level: association areas of neocortex and basal ganglia strategy: goal of movement and movement strategy that best achieves the goal. Middle level: motor cortex and cerebellum tactics: sequences of muscle contractions, arranged in space and time, required to smoothly and accurately achieve the strategic goal. Lowest level: represented by stem brain and sc execution: activate motor neuron and interneuron pools to generate goal-directed movement and make necessary adjustments of posture. Neocortex has information (senses), strategies need to be devised to move body to make options, which are filtered through bg and back to cortex until final decision. Motor areas of cortex and cerebellum make tactical decision and issue instructions to bs and sc.
