Small foveal stimuli render smooth pursuit less smooth
نویسندگان
چکیده
منابع مشابه
Smooth pursuit of small-amplitude sinusoidal motion.
Subjects used smooth eye movements to track small-amplitude sinusoidal target motions. Target frequencies (0.05 to 5 Hz) and amplitudes (1.9 to 30 min of arc) were in the range of those found in the retinal image during fixation of a stationary target while the head is not artificially supported. Smooth pursuit was poor at high target frequencies in several ways: Large uncompensated drifts were...
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We evaluated the hypothesis that smooth pursuit eye movements affect speed discrimination thresholds of distal stimuli because they alter the retinal image speed. Subjects judged speed differences of sine-wave gratings while they simultaneously pursued a superimposed moving bar. Speed discrimination thresholds were measured, under conditions of controlled eye movements, for grating speeds of 0....
متن کاملSmooth Pursuit Eye Movements
6 7 Gunnar Blohm, Philippe Lefèvre 8 9 Centre for Neuroscience Studies, Department of Physiology and Faculty of Arts & 10 Science, Queen’s University, Kingston, Ontario, Canada 11 Centre for Systems Engineering and Applied Mechanics (CESAME) and Institute of 12 Neuroscience (IoNS), Université catholique de Louvain, Louvain-la-Neuve, 13 Belgium 14 15 16 17 Corresponding author: Dr. Gunnar Blohm ...
متن کامل“Express” smooth pursuit
For the majority of human smooth pursuit eye movements made to a horizontal ramp target of unpredictable direction, the reciprocal of the latency appears to have a Gaussian distribution of the same general form as for saccades to step targets, but with smaller median. There are more latencies shorter than some 100 msec than would be expected from such a distribution: they form a distinct popula...
متن کاملSmooth pursuit of nonvisual motion.
Unlike saccades, smooth pursuit eye movements (SPEMs) are not under voluntary control and their initiation generally requires a moving visual target. However, there are various reports of limited smooth pursuit of the motion of a subject's own finger in total darkness (pursuit based on proprioceptive feedback) and to the combination of proprioception and tactile motion as an unseen finger was m...
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ژورنال
عنوان ژورنال: Journal of Vision
سال: 2014
ISSN: 1534-7362
DOI: 10.1167/14.10.494