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A hypothesis on the pathophysiological mechanisms of pakinsonian rigidity. Tomokazu OSHIMA 1 1Department of Neurobiology, Tokyo Metropolitan Institute for Neurosciences pp.1011-1017
Published Date 1990/12/10
DOI https://doi.org/10.11477/mf.1431900100
  • Abstract
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A hypothesis is set forth on the neural mechanisms that generate parkinsonian rigidity. It is pro-posed that parkinsonian rigidity is the exaggerated tonic stretch reflexes of progressive nature, caused by accelerated activities of spinal α- and static γ-motoneurons. It stems from the neuronal loss in the substantia nigra pars compacta (SNC) and the resultant dopamine depletion, which accelerates the output activities of the basal ganglia in a self-augmenting manner to be conveyed to the spinal cord.


Copyright © 1990, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1882-1243 印刷版ISSN 0001-8724 医学書院

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