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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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Do Head Position and Active Head Movements Influence Postural Stability?

Do Head Position and Active Head Movements Influence Postural Stability?

(p.548) Chapter 87 Do Head Position and Active Head Movements Influence Postural Stability?
The Head-Neck Sensory Motor System

Andreas Straube

Walter Paulus

Thomas Brandt

Oxford University Press

The differential effects of voluntary head movements (horizontal oscillations about the z axis) and varying head positions on postural sway are investigated in this chapter. The methods of the experiments are presented here. Ten subjects took part in the experiments, where their head movements were recorded using a head-fixed angular accelerometer. The main finding of the experiment is that the differential effects of varying head positions were surprisingly small. Moreover, the body sway does not significantly increase with head rotation and that indicated the precise reevaluation of head sway with respect to the head position relative to the trunk.

Keywords:   head movement, body sway, accelerometer, head position, head rotation, postural sway

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