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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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Differential Influence of Vertical Head Posture during Walking

Differential Influence of Vertical Head Posture during Walking

Chapter:
(p.560) Chapter 90 Differential Influence of Vertical Head Posture during Walking
Source:
The Head-Neck Sensory Motor System
Author(s):

Wolfgang H. Zangemeister

Maria V. Bulgheroni

Antonio Pedotti

Publisher:
Oxford University Press
DOI:10.1093/acprof:oso/9780195068207.003.0090

This study involves a kinematic analysis based on the examination of trajectories, velocities, and accelerations of all markers. The two questions pursued in this study are: (1) would it be possible to distinguish responses from subjects when normal humans walked under three different conditions of vertical head posture? (2) how could results fit into recent observations on the linkage between gaze position, otolith influences, and neck muscles as the uppermost part of the truncal/skeletal muscles? The results showed that the otolith input appears to dominate particularly neck prioceptive and gaze motor influences during normal gait. Thus, postural control depends on the integration of vestibular, somatosensory, and visual orientation signals.

Keywords:   otolith input, vestibular signals, somatosensory signals, visual orientation, postural control

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