Pre- and post-saccadic stimulus timing in saccadic suppression of displacement – A computational model

When the target of a saccadic eye movement is displaced while the eyes move this displacement is often not noticed (saccadic suppression of displacement, SSD). We present a neurobiologically motivated, computational model of SSD and compare its simulation results to experimental data. The model offe...

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Bibliographic Details
Published inVision research (Oxford) Vol. 138; pp. 1 - 11
Main Authors Ziesche, Arnold, Bergelt, Julia, Deubel, Heiner, Hamker, Fred H.
Format Journal Article
LanguageEnglish
Published England Elsevier Ltd 01.09.2017
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Summary:When the target of a saccadic eye movement is displaced while the eyes move this displacement is often not noticed (saccadic suppression of displacement, SSD). We present a neurobiologically motivated, computational model of SSD and compare its simulation results to experimental data. The model offers a simple explanation of the effects of pre- and post-saccadic stimulus blanking on SSD in terms of peri-saccadic network dynamics. Under normal peri-saccadic conditions pre-and post-saccadic stimulus traces are recurrently integrated with reference to present and future eye position, whereas blanking diminishes the pre-saccadic stimulus trace and thus leads to an uninfluenced integration of the post-saccadic stimulus trace. We show that part of the intersubject variability in SSD can be explained by differences in decision thresholds of this integration process.
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ISSN:0042-6989
1878-5646
DOI:10.1016/j.visres.2017.06.007