The spatial profile of mask-induced compression for perception and action

Vision Research
Sabine BornPatrick Cavanagh

Abstract

Stimuli briefly flashed just before a saccade are perceived closer to the saccade target, a phenomenon known as saccadic compression of space. We have recently demonstrated that similar mislocalizations of flashed stimuli can be observed in the absence of saccades: brief probes were attracted towards a visual reference when followed by a mask. To examine the spatial profile of this new phenomenon of masked-induced compression, here we used a pair of references that draw the probe into the gap between them. Strong compression was found when we masked the probe and presented it following a reference pair, whereas little or no compression occurred for the probe without the reference pair or without the mask. When the two references were arranged vertically, horizontal mislocalizations prevailed. That is, probes presented to the left or right of the vertically arranged references were "drawn in" to be seen aligned with the references. In contrast, when we arranged the two references horizontally, we found vertical compression for stimuli presented above or below the references. Finally, when participants were to indicate the perceived probe location by making an eye movement towards it, saccade landing positions were compressed in ...Continue Reading

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Citations

Mar 26, 2016·Frontiers in Systems Neuroscience·Sabine BornPatrick Cavanagh
Sep 4, 2016·Vision Research·Mehmet N AğaoğluSusana T L Chung
Jan 24, 2017·Current Biology : CB·Gerrit W MausPatrick Cavanagh
May 13, 2017·NeuroImage·Anna K BonkhoffGereon R Fink

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