Abstract：
:The effects of visual contextual illusions on motor behaviour vary largely between experimental conditions. Whereas it has often been reported that the effects of illusions on pointing and grasping are largest when the movement is performed some time after the stimulus has disappeared, the effect of a delay has hardly been studied for saccadic eye movements. In this experiment, participants viewed a briefly presented Müller-Lyer illusion with a target at its endpoint and made a saccade to the remembered position of this target after a delay of 0, 0.6, 1.2 or 1.8 s. We found that horizontal saccade amplitudes were shorter for the perceptually shorter than for the perceptually longer configuration of the illusion. Most importantly, although the delay clearly affected saccade amplitude, resulting in shorter saccades for longer delays, the illusion effect did not depend on the duration of the delay. We argue that visually guided and memory-guided saccades are likely based on a common visual representation.
journal_name
Exp Brain Resjournal_title
Experimental brain researchauthors
de Brouwer AJ,Brenner E,Smeets JBdoi
10.1007/s00221-015-4520-5subject
Has Abstractpub_date
2016-04-01 00:00:00pages
977-83issue
4eissn
0014-4819issn
1432-1106pii
10.1007/s00221-015-4520-5journal_volume
234pub_type
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