A foveal target increases catch - up saccade frequency during smooth pursuit 1 2
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چکیده
A foveal target increases catch-up saccade frequency during smooth pursuit 1 2 Stephen J. Heinen, Elena Potapchuk, Scott N. J. Watamaniuk 3 4 Smith-Kettlewell Eye Research Institute, San Francisco, CA, 94115, USA 5 Department of Psychology, Wright State University, Dayton, OH, 05435, USA 6 7 Running head: Foveal pursuit targets increase catch-up saccade frequency 8 9 Corresponding author: Stephen J. Heinen, 2318 Fillmore St., San Francisco, CA, 94115 10 e-mail: 11 12
منابع مشابه
A foveal target increases catch-up saccade frequency during smooth pursuit.
Images that move rapidly across the retina of the human eye blur because the retina has sluggish temporal dynamics. Voluntary smooth pursuit eye movements are modeled as matching object velocity to minimize retinal motion and prevent retinal blurring. However, "catch-up" saccades that are ubiquitous during pursuit interrupt it and disrupt clear vision. But catch-up saccades may not be a common ...
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PURPOSE Several behavioral studies have shown that the reaction times of visually guided movements are slower in people with amblyopia, particularly during amblyopic eye viewing. Here, we tested the hypothesis that the initiation of smooth pursuit eye movements, which are responsible for accurately keeping moving objects on the fovea, is delayed in people with anisometropic amblyopia. METHODS...
متن کاملFacilitation of smooth pursuit initiation by electrical stimulation in the supplementary eye fields.
The role of the supplementary eye fields (SEF) during smooth pursuit was investigated with electrical microstimulation. We found that stimulation in the SEF increased the acceleration and velocity of the eyes in the direction of target motion during smooth pursuit initiation but not during sustained pursuit. The increase in eye velocity during initiation will be referred to as pursuit facilitat...
متن کاملQuantitative analysis of catch-up saccades during sustained pursuit.
During visual tracking of a moving stimulus, primates orient their visual axis by combining two very different types of eye movements, smooth pursuit and saccades. The purpose of this paper was to investigate quantitatively the catch-up saccades occurring during sustained pursuit. We used a ramp-step-ramp paradigm to evoke catch-up saccades during sustained pursuit. In general, catch-up saccade...
متن کاملSaccade detection using a particle filter.
BACKGROUND When healthy subjects track a moving target, "catch-up" saccades are triggered to compensate for the non-perfect tracking gain. The evaluation of the pursuit and/or saccade kinematics requires that saccade and pursuit components be separated from the eye movement trace. A similar situation occurs when analyzes eye movements of patients that could contain eye drifts between saccades. ...
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تاریخ انتشار 2015