Postsaccadic target blanking prevents saccadic suppression of image displacement
نویسندگان
چکیده
منابع مشابه
Postsaccadic target blanking prevents saccadic suppression of image displacement
Displacement of a visual target during a saccadic eye movement is normally detected only at a high threshold, implying that high-quality information about target position is not stored in the nervous system across the saccade. We show that blanking the target for 50-300 msec after a saccade restores sensitivity to the displacement. With blanking, subjects reliably detect displacements as small ...
متن کاملSaccadic suppression of image displacement.
HeImholtz (1867) suggested that the retinal image displacement vector, the afferent signal, is compared with the expected saccadic displacement vector, the efferent copy (Holst and Mittelstaedt, 1950) carried by the corollary discharge (Sperry, 1950) and this process may be called the " vectorial Helmholtzian com-parator for the frame of reference ". The results presented in this report show th...
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Displacements of visual stimuli during saccadic eye movements are often not noticed. We have demonstrated that saccadic suppression of image displacement can be eliminated by blanking the stimulus for a short period during and after the saccade (Deubel, Schneider, & Bridgeman, 1996). Here we report an experiment in which target visibility was interrupted after the saccade, either by distal targ...
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The threshold for detection of displacements of visual objects is higher during voluntary saccades than it is during steady gaze ("saccadic suppression of displacement"; SSD). Relative contributions to SSD of extraretinal and retinal factors were investigated by measuring displacement thresholds in four experiments in which three observers judged whether a test flash, presented after a saccade ...
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ژورنال
عنوان ژورنال: Vision Research
سال: 1996
ISSN: 0042-6989
DOI: 10.1016/0042-6989(95)00203-0