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The Head-Neck Sensory Motor System$
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Alain Berthoz, Werner Graf, and P. P. Vidal

Print publication date: 1992

Print ISBN-13: 9780195068207

Published to Oxford Scholarship Online: March 2012

DOI: 10.1093/acprof:oso/9780195068207.001.0001

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Significance of Muscle Proprioceptive and Vestibulospinal Reflexes in the Control of Human Posture

Significance of Muscle Proprioceptive and Vestibulospinal Reflexes in the Control of Human Posture

Chapter:
(p.552) Chapter 88 Significance of Muscle Proprioceptive and Vestibulospinal Reflexes in the Control of Human Posture
Source:
The Head-Neck Sensory Motor System
Author(s):

Michael Trippel

Gerhard A. Horstmann

Volker Dietz

Publisher:
Oxford University Press
DOI:10.1093/acprof:oso/9780195068207.003.0088

The vestibular system plays an important role in the stabilization of human stance. The purpose of this study is to clarify which receptors and mechanisms are involved in the regulation of posture. The changes in several biomechanical parameters affected by perturbation of the support surface are analyzed, as well as their correlation to the behavior of EMG responses generated by the leg muscles. The significance of the proprioceptive reflex mechanisms is discussed in detail in this chapter. The findings of the study suggested that the vestibular system plays the major role in the compensation of small destabilizing impulses imposed to the back of a subject. This would help to compensate the body sway before a significant stretch of the leg muscles takes place.

Keywords:   body sway, vestibulospinal reflexes, EMG response, receptors, posture, leg muscles

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