May 2003
Volume 44, Issue 13
Free
ARVO Annual Meeting Abstract  |   May 2003
Effect of After Image on Saccadic Eye Movements
T.L. Alvarez; K.D. Beck; A. Daftari; F.B. Chua; R. DeMarco; M.T. Bergen; R.J. Servatius
Author Affiliations & Notes
  • T.L. Alvarez
    Biomedical Engineering, New Jersey Institute of Technology, Newark, NJ, United States
  • K.D. Beck
    Neurobehavioral Research Laboratory, VA New Jersey Health Care System, East Orange, NJ, United States
  • A. Daftari
    Neurobehavioral Research Laboratory, VA New Jersey Health Care System, East Orange, NJ, United States
  • F.B. Chua
    Neurobehavioral Research Laboratory, VA New Jersey Health Care System, East Orange, NJ, United States
  • R. DeMarco
    Neurobehavioral Research Laboratory, VA New Jersey Health Care System, East Orange, NJ, United States
  • M.T. Bergen
    Neurobehavioral Research Laboratory, VA New Jersey Health Care System, East Orange, NJ, United States
  • R.J. Servatius
    Neurobehavioral Research Laboratory, VA New Jersey Health Care System and Department of Neuroscience New Jersey Medical School, East Orange, NJ, United States
  • Footnotes
    Commercial Relationships  T.L. Alvarez, None; K.D. Beck, None; A. Daftari, None; F.B. Chua, None; R. DeMarco, None; M.T. Bergen, None; R.J. Servatius, None.
Investigative Ophthalmology & Visual Science May 2003, Vol.44, 1969. doi:
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      T.L. Alvarez, K.D. Beck, A. Daftari, F.B. Chua, R. DeMarco, M.T. Bergen, R.J. Servatius; Effect of After Image on Saccadic Eye Movements . Invest. Ophthalmol. Vis. Sci. 2003;44(13):1969.

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Abstract

Abstract: : Purpose: Saccadic oculomotor control is a sophisticated system responsible for locating objects in two-dimensional space. We investigated how a single burst of light affects the neural strategy of locating an object through saccadic movement. Methods: Horizontal eye movements were recorded using the Skalar infrared limbus tracking system model 6500. Experiments took place in the dark where a subject would initiate an experiment with a trigger button followed by a random delay to avoid subject anticipation. A flash of light was produced by a Grass photic stimulator model PS33 plus when the subject pressed a trigger button. A new target position was illuminated after a random delay. Results: The control responses, a 15 deg saccadic movement, were compared to a 15 deg saccadic movement with a flash presented in the left, center, and right visual fields. The latency, time from stimulus onset to peak velocity increased when a flash was present in the experiment. Conclusions: Preliminary data suggest temporal changes occur as a result of flash presentation.

Keywords: eye movements: conjugate • visual search • eye movements: saccades and pursuits 
© 2003, The Association for Research in Vision and Ophthalmology, Inc., all rights reserved. Permission to republish any abstract or part of an abstract in any form must be obtained in writing from the ARVO Office prior to publication.
Copyright © 2015 Association for Research in Vision and Ophthalmology.
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