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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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Eye-Head Coordination During Active and Passive Head Rotations in the Dark

Eye-Head Coordination During Active and Passive Head Rotations in the Dark

(p.434) Chapter 67 Eye-Head Coordination During Active and Passive Head Rotations in the Dark
The Head-Neck Sensory Motor System

Roberto Schmid

Daniela Zambarbieri

Oxford University Press

Vestibular nystagmus is believed to be related to a strategy of eye-head coordination aimed to quickly orient the gaze toward a point of interest. This was suggested by Melvill Jones in 1964. Thus, in order to give further support for the interpretation of vestibular nystagmus, the authors compared eye-head coordination during active and passive head rotations in the dark by adopting similar profiles of head movement. The experiments involved subjects that were seated in the dark wearing lightweight helmets with lamps. The subjects were advised to slowly orient their heads to a position while the profiles of their head movements were recorded. The results in this study support the hypothesis that the orienting saccades observed during active head rotation is of the same nature with the fast phases of vestibular nystagmus evoked by passive rotation.

Keywords:   vestibular nystagmus, Melvill Jones, eye-head coordination, head movements, head rotations, rotation

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