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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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Effect of Freeing the Head on Eye Movement Characteristics during Three-Dimensional Shifts of Gaze and Tracking

Effect of Freeing the Head on Eye Movement Characteristics during Three-Dimensional Shifts of Gaze and Tracking

Chapter:
(p.412) Chapter 64 Effect of Freeing the Head on Eye Movement Characteristics during Three-Dimensional Shifts of Gaze and Tracking
Source:
The Head-Neck Sensory Motor System
Author(s):

Han Collewijn

Robert M. Steinman

Casper J. Erkelens

Zygmunt Pizlo

Johannes Van Der Steen

Publisher:
Oxford University Press
DOI:10.1093/acprof:oso/9780195068207.003.0064

This chapter considers the primary method used in studying the binocular control of gaze while an unrestrained subject viewed close target objects. Also presented here is the first comparative analysis of two types of oculomotor performance: performance in a head-free condition versus performance in a “bite board” (head fixed condition). The subjects made saccades between two stationary targets and tracked a target that moved both in a lateral direction and in depth. This chapter also shows that head-free saccades are faster than saccades made using the head on a bite board, and head-free three-dimensional pursuit does not differ significantly from the pursuit with the head on a bite board. This work has concluded that it is feasible to record binocular gazed behaviors in unrestrained subjects. Another conclusion is that the performance of oculomotor control is excellent in generally natural conditions.

Keywords:   oculomotor control, head-free condition, natural conditions, oculomotor performance, bite board, binocular control

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