Document Detail

Optimizing gaze control in three dimensions.
MedLine Citation:
PMID:  9721104     Owner:  NLM     Status:  MEDLINE    
Horizontal and vertical movements of the human eye bring new objects to the center of the visual field, but torsional movements rotate the visual world about its center. Ocular torsion stays near zero during head-fixed gaze shifts, and eye movements to visual targets are thought to be driven by purely horizontal and vertical commands. Here, analysis of eye-head gaze shifts revealed that gaze commands were three-dimensional, with a separate neural control system for torsion. Active torsion optimized gaze control as no two-dimensional system could have, stabilizing the retinal image as quickly as possible when it would otherwise have spun around the fixation point.
D Tweed; T Haslwanter; M Fetter
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Science (New York, N.Y.)     Volume:  281     ISSN:  0036-8075     ISO Abbreviation:  Science     Publication Date:  1998 Aug 
Date Detail:
Created Date:  1998-09-09     Completed Date:  1998-09-09     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  0404511     Medline TA:  Science     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  1363-6     Citation Subset:  IM; S    
Department of Physiology, University of Western Ontario, London, Canada.
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MeSH Terms
Computer Simulation
Eye Movements / physiology*
Fixation, Ocular / physiology*
Head Movements / physiology*
Models, Biological
Oculomotor Muscles / physiology
Vision, Ocular / physiology*

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