alexa A Neural Control Model for Horizontal Visual, Auditory and Auditory-Visual Bisensory Stimuli Elicited Saccades
ISSN: 2155-9538

Journal of Bioengineering & Biomedical Science
Open Access

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Research Article

A Neural Control Model for Horizontal Visual, Auditory and Auditory-Visual Bisensory Stimuli Elicited Saccades

Xiu Zhai, Chengqian Che, Benjamin D Mazzarese, Allison V Colberg and John D Enderle*

Department of Biomedical Engineering, University of Connecticut, Storrs, Connecticut 06269-3247, USA

*Corresponding Author:
John D Enderle
Department of Biomedical Engineering
University of Connecticut, 260 Glenbrook Road
Storrs, Connecticut 06269-3247, USA
Tel: +1 860-486-5521
E-mail: [email protected]

Received Date: January 17, 2015 Accepted Date: December 22, 2015 Published Date: January 28, 2016

Citation: Zhai X, Che C, Mazzarese BD, Colberg AV, Enderle JD (2016) A Neural Control Model for Horizontal Visual, Auditory and Auditory-Visual Bisensory Stimuli Elicited Saccades. J Bioengineer & Biomedical Sci S3:004. doi:10.4172/2155-9538.S3-004

Copyright: © 2016 Zhai X, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.



To provide a comprehensive investigation of goal-oriented saccades, experiments are designed to trigger fast eye movements by different types of targets, including visual, auditory, and auditory-visual bisensory stimuli. Human saccades are recorded using a high speed eye tracking system. Data is analyzed to produce parameter estimates using system identification technique for a 3rd-order linear horizontal saccadic eye movement model. Saccade characteristics are explored and compared. The auditory-visual stimuli provide the greatest saccade accuracy. Auditory saccades show lower peak velocity and longer duration. Saccade latent period is relatively independent of saccade amplitude, but there is a significant reduction in the bisensory saccades. Neural inputs of saccades are estimated and analyzed as well. Auditory saccades exhibit lower agonist pulse magnitude and longer agonist pulse duration. Antagonist onset delay is longer in auditory saccades. Post saccade phenomena are caused by the post-inhibitory rebound burst of the antagonist motoneurons. There is a higher incidence of dynamic overshoot in auditory saccades than visual saccades, with more in the abducting direction than the adducting direction.


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