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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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Subjective Visual Vertical and Eye-Head Coordination (Roll) with Brain Stem Lesions

Subjective Visual Vertical and Eye-Head Coordination (Roll) with Brain Stem Lesions

(p.640) Chapter 106 Subjective Visual Vertical and Eye-Head Coordination (Roll) with Brain Stem Lesions
The Head-Neck Sensory Motor System

Dieterich Marianne

Thomas Brandt

Oxford University Press

The ocular tilt reaction (OTR) models a fundamental pattern of coordinated eye-head roll motion based on utricular/saccular as well as vertical canal input, made by the gaviceptive pathways from the labyrinths via pontomedullary vestibular nuclei to the rostral midbrain tegmentum. The direction of eye-head tilt in roll with brain stem lesions and the skew deviation and cyclorotation is discussed in this chapter. It is concluded that all patients with the OTR showed significant deviations of the subjective visual vertical (SVV) in the direction of the head tilt. The single features of the OTR, perceptual and oculomotor, can be induced separately depending on the site of the lesion.

Keywords:   ocular tilt reaction, gaviceptive pathways, pontomedullary vestibular nuclei, rostral midbrain tegmentum, cyclorotation

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