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The Cerebellum and Movement Precision

  • Robert M. Beckstead

Abstract

The cerebellum is essential for the full perfection of a wide variety of bodily movements. Once considered to be “the head ganglion of the propriosensory system,” it is now apparent that the cerebellum contrib- utes to all brain activities that are ultimately expressed in movement. To accomplish this role, the cerebellum receives sensory information of all kinds (except, perhaps, visceral, olfactory, and taste) from all parts of the body, information about motor commands from the descending systems, and a diversity of reprocessed information from higher brain structures, including, most prominently, the cerebral cortex. In turn, the cerebel- lum’s output is sent to all of the motor control systems of the brain. The cerebellum is best known clinically for its contribution to the coordination of skeletomotor movement; clinical signs of cerebellar dysfunction are ataxia of limb and eye movements, postural disturbances, and decreased muscle tone. In this chapter, let’s examine the cerebellar processing circuit and see how its design enables it to contribute precise timing to specific muscle contractions.

Keywords

Purkinje Cell Cerebellar Cortex Vestibular Nucleus Mossy Fiber Parallel Fiber 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Detailed Reviews

  1. Gilman S. 1985. The cerebellum: its role in posture and movement. In Swash M, Kennard C (eds), Scientific Basis of Clinical Neurology. Churchill Livingstone, New York.Google Scholar
  2. Llinás R. 1981. Electrophysiology of the cerebellar networks. In Brooks VB (ed), Handbook of Physiology.American Physiological Society, Washington, DC.Google Scholar
  3. Palay SL, Chan-Palay V. 1974. Cerebellar Cortex: Cytology and Organization. Springe-Verlag, New York.CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media New York 1996

Authors and Affiliations

  • Robert M. Beckstead
    • 1
  1. 1.Department of PhysiologyMedical University of South CarolinaCharlestonUSA

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