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2 - Does the nervous system depend on kinesthetic information to control natural limb movements?

Published online by Cambridge University Press:  11 December 2009

S. C. Gandevia
Affiliation:
Department of Clinical Neurophysiology, The Prince Henry and Prince of Wales Hospitals
D. Burke
Affiliation:
Prince of Wales Medical Research Institute, University of New South Wales, Sydney 2036, Australia
Paul Cordo
Affiliation:
Robert S. Dow Neurological Center, Good Samaritan Hospital and Medical Center, Portland, Oregon
Stevan Harnad
Affiliation:
Princeton University, New Jersey
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Summary

Abstract: This target article draws together two groups of experimental studies on the control of human movement through peripheral feedback and centrally generated signals of motor commands. First, during natural movement, feedback from muscle, joint, and cutaneous afferents changes; in human subjects these changes have reflex and kinesthetic consequences. Recent psychophysical and microneurographic evidence suggests that joint and even cutaneous afferents may have a proprioceptive role. Second, the role of centrally generated motor commands in the control of normal movements and movements following acute and chronic deafferentation is reviewed. There is increasing evidence that subjects can perceive their motor commands under various conditions, but that this is inadequate for normal movement; deficits in motor performance arise when the reliance on proprioceptive feedback is abolished either experimentally or because of pathology. During natural movement, the CNS appears to have access to functionally useful input from a range of peripheral receptors as well as from internally generated command signals. The unanswered questions that remain suggest a number of avenues for further research.

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Movement Control , pp. 12 - 30
Publisher: Cambridge University Press
Print publication year: 1994

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