Effects of saccadic adaptation on visual localization before and during saccades.

Experimental Brain Research
K Georg, Markus Lappe

Abstract

Short-term saccadic adaptation is a mechanism that adjusts saccade amplitude to accurately reach an intended saccade target. Short-term saccadic adaptation induces a shift of perceived localization of objects flashed before the saccade. This shift, being detectable only before an adapted saccade, disappears at some time around saccade onset. Up to now, the exact time course of this effect has remained unknown. In previous experiments, the mislocalization caused by this adaptation-induced shift was overlapping with the mislocalization caused by a different, saccade-related localization error, the peri-saccadic compression. Due to peri-saccadic compression, objects flashed immediately at saccade onset appear compressed towards the saccade target. First, we tested whether the adaptation-induced shift and the peri-saccadic compression were either independent or related processes. We performed experiments with two different luminance-contrast conditions to separate the adaptation-induced shift and the peri-saccadic compression. Human participants had to indicate the perceived location of briefly presented stimuli before, during or after an adapted saccade. Adaptation-induced shift occurred similarly in either contrast condition, wit...Continue Reading

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Citations

Jan 19, 2011·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Fred H HamkerMarkus Lappe
Aug 7, 2010·Advances in Cognitive Psychology·Sonja StorkA H C van der Heijden
Dec 23, 2009·Neuroscience and Biobehavioral Reviews·D PélissonC Tilikete
Aug 2, 2011·Current Biology : CB·Eckart ZimmermannMaria Concetta Morrone
Mar 30, 2010·Current Biology : CB·Nicola De PisapiaDavid Melcher
Jun 1, 2016·Frontiers in Human Neuroscience·Eckart Zimmermann, Markus Lappe
May 20, 2020·Journal of Vision·Anna Kosovicheva, Peter J Bex
Feb 6, 2015·Journal of Neurophysiology·E ZimmermannM Lappe
Mar 10, 2021·ELife·Jana Masselink, Markus Lappe

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