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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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What about the So-Called Neck Reflexes in Humans?

What about the So-Called Neck Reflexes in Humans?

(p.543) Chapter 86 What about the So-Called Neck Reflexes in Humans?
The Head-Neck Sensory Motor System

Victor S. Gurfinkel

Michael A. Lebedev

Yuri S. Levick

Oxford University Press

This chapter aims to investigate the extent to which the human neck influences represent “reflexes”, and the degree to which they are determined by the internal representation of the body. Postural factors in man induce changes in the tone of limb muscles that resemble neck reflexes in animals. The results presented here include the influence of static head rotation on tonic activity of knee extensors. The modification of leg muscle tonic activity during illusory head “return” produced by sustained static rotation of the head is also discussed in detail here. It is concluded that head rotations induce changes in distribution of tonic activity of limb muscles in man.

Keywords:   neck reflexes, static rotation, human neck, neck reflexes, limb muscles, postural factors

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