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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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Head Position versus Head Motion in the Inhibition of Horizontal Postrotary Nystagmus

Head Position versus Head Motion in the Inhibition of Horizontal Postrotary Nystagmus

Chapter:
(p.223) Chapter 34 Head Position versus Head Motion in the Inhibition of Horizontal Postrotary Nystagmus
Source:
The Head-Neck Sensory Motor System
Author(s):

Eberhard Koenig

Wilhelm Dengler

Michael Fetter

Asta Hann

Johannes Dichgans

Publisher:
Oxford University Press
DOI:10.1093/acprof:oso/9780195068207.003.0034

A tilt from the prior erect position to a horizontal head position stimulates not only the otoliths but also the vertical semicircular canals and neck afferents. To clarify further the inputs needed for inhibition, the authors compared static head tilts having only one dynamic component with head movements giving predominantly dynamic components. In addition, intermittent head tilts of different durations and at different times after the stop were used to study the dynamics of the “dumping” process. Head tilts after the presumed end of the peripheral input were used to study whether the effect of the inhibitory stimulus changes in the absence of peripheral input from the horizontal semicircular canals.

Keywords:   tilt, erect position, semicircular canals, neck afferents, head tilts, peripheral input

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