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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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Gaze Movements: Patterns Linking Latency and Vestibulo-ocular Reflex Gain

Gaze Movements: Patterns Linking Latency and Vestibulo-ocular Reflex Gain

Chapter:
(p.461) Chapter 72 Gaze Movements: Patterns Linking Latency and Vestibulo-ocular Reflex Gain
Source:
The Head-Neck Sensory Motor System
Author(s):

Wolfgang H. Zangemeister

Lawrence Stark

Publisher:
Oxford University Press
DOI:10.1093/acprof:oso/9780195068207.003.0072

Gaze is defined as the coordinated sum of eye and head movements and gaze position is the position of the eye in space, while eye position is the position of the eye in the orbit. In this chapter, the authors discuss how several causal factors (protocol conditions including desired gaze amplitude and pathologic situations including reduced inclination to move the head in hemianopia) influence the selection of a gaze mode despite statistical selection. The results of the methods employed in this study show that there is a strong connection between the gaze type as defined by relative latency of eye and head movement and the VOR gain and gaze amplitude. It is also evident that some motor brain mechanism organizes a relative latency between head and eye movement.

Keywords:   gaze, hemianopia, vestibulo-ocular reflex, statistical selection, eye position, head movement, gaze amplitude

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