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Physiological Basis of Cerebellar Dysmetria

Published online by Cambridge University Press:  18 September 2015

John T. Murphy ,
C. Kwan ,
William A. MacKay  and
Yiu C. Wong
John T. Murphy*
Affiliation:
Department of Physiology, University of Toronto, Ontario, Canada
C. Kwan
Affiliation:
Department of Physiology, University of Toronto, Ontario, Canada
William A. MacKay
Affiliation:
Department of Physiology, University of Toronto, Ontario, Canada
Yiu C. Wong
Affiliation:
Department of Physiology, University of Toronto, Ontario, Canada
*
Dept. of Physiology, University of Toronto, Medical Sciences Building, Toronto, Ontario, M5S 1A8, Canada
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Summary:

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A primary control system for the arm position is formulated. The hypothesis that the cerebellum is a part of the system controller is checked by studying the nerve cells responses in the cerebellum, and motor cortex, to natural activation of muscular receptors. The results show that the cerebellum receives feedback information related to the speed of these receptors. The discussion concentrates on how the interruption of this feedback may result in excessive oscillations to instability. These observations are the base for evaluating how the cerebral lesions produce dismeasurements.

Type
Research Article
Information
Canadian Journal of Neurological Sciences , Volume 2 , Issue 3 , August 1975 , pp. 279 - 284
Copyright
Copyright © Canadian Neurological Sciences Federation 1975

References

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