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(Investigative Ophthalmology and Visual Science. 2008;49:604-612.)
© 2008 by The Association for Research in Vision and Ophthalmology, Inc.
DOI:  10.1167/iovs.07-0753
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Saccade Dynamics before, during, and after Saccadic Adaptation in Humans

Thérèse Collins, Arslan Semroud, Eric Orriols, and Karine Doré-Mazars

From the Laboratoire de Psychologie et Neurosciences Cognitives, Paris Descartes University and CNRS (Centre National de la Recherche Scientifique), Boulogne-Billancourt, France.

PURPOSE. When saccade amplitude is systematically inadequate relative to the desired target position, the saccadic system adaptively modifies the amplitude of subsequent saccades so as to recover precise targeting capabilities. The effect of saccadic adaptation on saccade metrics (amplitude, direction) is well documented, but the effect on dynamics (velocity, duration, acceleration, deceleration) remains to be fully elucidated.

METHODS. The dynamics of adapted saccades were compared with that of baseline saccades of similar amplitudes.

RESULTS. The peak deceleration and skewness (duration of the acceleration period/duration of the deceleration period) were modified by adaptation.

CONCLUSIONS. The results point toward involvement of the cerebellum rather than the brain stem saccade generator in human saccadic adaptation.




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 J. Neurophysiol.Home page
T. Collins, D. Vergilino-Perez, L. Delisle, and K. Dore-Mazars
Visual Versus Motor Vector Inversions in the Antisaccade Task: A Behavioral Investigation With Saccadic Adaptation
J Neurophysiol, May 1, 2008; 99(5): 2708 - 2718.
[Abstract] [Full Text] [PDF]


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