Vestibular Contributions to Gaze Stability During Transient Forward and Backward Motion

Department of Neurology, University Hospital Zurich, CH-8091 Zurich, Switzerland; and Department of Neurobiology, Washington University School of Medicine, St. Louis, Missouri 63130 Submitted 28 March 2003; accepted in final form 13 May 2003 The accuracy with which the vestibular system anticipates...

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Bibliographic Details
Published in:Journal of neurophysiology 2003-09, Vol.90 (3), p.1996-2004
Main Authors: Hess, Bernhard J. M, Angelaki, Dora E
Format: Article
Language:English
Subjects:
Animals
Eye Movements - physiology
Head Movements - physiology
Macaca mulatta
Motion Perception - physiology
Photic Stimulation - methods
Vestibule, Labyrinth - physiology
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Summary:Department of Neurology, University Hospital Zurich, CH-8091 Zurich, Switzerland; and Department of Neurobiology, Washington University School of Medicine, St. Louis, Missouri 63130 Submitted 28 March 2003; accepted in final form 13 May 2003 The accuracy with which the vestibular system anticipates and compensates for the visual consequences of translation during forward and backward movements was investigated with transient motion profiles in rhesus monkeys trained to fixate targets on an isovergence screen. Early during motion when visuomotor reflexes remain relatively ineffective and vestibular-driven mechanisms have an important role for controlling the movement of the eyes, a large asymmetry was observed for forward and backward heading directions. During forward motion, ocular velocity gains increased steeply and reached near unity gains as early as 40–50 ms after motion onset. In addition, instantaneous directional errors also remained
ISSN:0022-3077
1522-1598
DOI:10.1152/jn.00302.2003