Visual stability and the motion aftereffect: a psychophysical study revealing spatial updating.

Eye movements create an ever-changing image of the world on the retina. In particular, frequent saccades call for a compensatory mechanism to transform the changing visual information into a stable percept. To this end, the brain presumably uses internal copies of motor commands. Electrophysiologica...

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Autores principales:	Ulrich Biber, Uwe J Ilg
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2011
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/ab0d216e14414962b34d8ebc40a032de
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spelling	oai:doaj.org-article:ab0d216e14414962b34d8ebc40a032de2021-11-18T06:59:49ZVisual stability and the motion aftereffect: a psychophysical study revealing spatial updating.1932-620310.1371/journal.pone.0016265https://doaj.org/article/ab0d216e14414962b34d8ebc40a032de2011-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/21298104/pdf/?tool=EBIhttps://doaj.org/toc/1932-6203Eye movements create an ever-changing image of the world on the retina. In particular, frequent saccades call for a compensatory mechanism to transform the changing visual information into a stable percept. To this end, the brain presumably uses internal copies of motor commands. Electrophysiological recordings of visual neurons in the primate lateral intraparietal cortex, the frontal eye fields, and the superior colliculus suggest that the receptive fields (RFs) of special neurons shift towards their post-saccadic positions before the onset of a saccade. However, the perceptual consequences of these shifts remain controversial. We wanted to test in humans whether a remapping of motion adaptation occurs in visual perception.The motion aftereffect (MAE) occurs after viewing of a moving stimulus as an apparent movement to the opposite direction. We designed a saccade paradigm suitable for revealing pre-saccadic remapping of the MAE. Indeed, a transfer of motion adaptation from pre-saccadic to post-saccadic position could be observed when subjects prepared saccades. In the remapping condition, the strength of the MAE was comparable to the effect measured in a control condition (33±7% vs. 27±4%). Contrary, after a saccade or without saccade planning, the MAE was weak or absent when adaptation and test stimulus were located at different retinal locations, i.e. the effect was clearly retinotopic. Regarding visual cognition, our study reveals for the first time predictive remapping of the MAE but no spatiotopic transfer across saccades. Since the cortical sites involved in motion adaptation in primates are most likely the primary visual cortex and the middle temporal area (MT/V5) corresponding to human MT, our results suggest that pre-saccadic remapping extends to these areas, which have been associated with strict retinotopy and therefore with classical RF organization. The pre-saccadic transfer of visual features demonstrated here may be a crucial determinant for a stable percept despite saccades.Ulrich BiberUwe J IlgPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 6, Iss 1, p e16265 (2011)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Ulrich Biber Uwe J Ilg Visual stability and the motion aftereffect: a psychophysical study revealing spatial updating.
description	Eye movements create an ever-changing image of the world on the retina. In particular, frequent saccades call for a compensatory mechanism to transform the changing visual information into a stable percept. To this end, the brain presumably uses internal copies of motor commands. Electrophysiological recordings of visual neurons in the primate lateral intraparietal cortex, the frontal eye fields, and the superior colliculus suggest that the receptive fields (RFs) of special neurons shift towards their post-saccadic positions before the onset of a saccade. However, the perceptual consequences of these shifts remain controversial. We wanted to test in humans whether a remapping of motion adaptation occurs in visual perception.The motion aftereffect (MAE) occurs after viewing of a moving stimulus as an apparent movement to the opposite direction. We designed a saccade paradigm suitable for revealing pre-saccadic remapping of the MAE. Indeed, a transfer of motion adaptation from pre-saccadic to post-saccadic position could be observed when subjects prepared saccades. In the remapping condition, the strength of the MAE was comparable to the effect measured in a control condition (33±7% vs. 27±4%). Contrary, after a saccade or without saccade planning, the MAE was weak or absent when adaptation and test stimulus were located at different retinal locations, i.e. the effect was clearly retinotopic. Regarding visual cognition, our study reveals for the first time predictive remapping of the MAE but no spatiotopic transfer across saccades. Since the cortical sites involved in motion adaptation in primates are most likely the primary visual cortex and the middle temporal area (MT/V5) corresponding to human MT, our results suggest that pre-saccadic remapping extends to these areas, which have been associated with strict retinotopy and therefore with classical RF organization. The pre-saccadic transfer of visual features demonstrated here may be a crucial determinant for a stable percept despite saccades.
format	article
author	Ulrich Biber Uwe J Ilg
author_facet	Ulrich Biber Uwe J Ilg
author_sort	Ulrich Biber
title	Visual stability and the motion aftereffect: a psychophysical study revealing spatial updating.
title_short	Visual stability and the motion aftereffect: a psychophysical study revealing spatial updating.
title_full	Visual stability and the motion aftereffect: a psychophysical study revealing spatial updating.
title_fullStr	Visual stability and the motion aftereffect: a psychophysical study revealing spatial updating.
title_full_unstemmed	Visual stability and the motion aftereffect: a psychophysical study revealing spatial updating.
title_sort	visual stability and the motion aftereffect: a psychophysical study revealing spatial updating.
publisher	Public Library of Science (PLoS)
publishDate	2011
url	https://doaj.org/article/ab0d216e14414962b34d8ebc40a032de
work_keys_str_mv	AT ulrichbiber visualstabilityandthemotionaftereffectapsychophysicalstudyrevealingspatialupdating AT uwejilg visualstabilityandthemotionaftereffectapsychophysicalstudyrevealingspatialupdating
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Visual stability and the motion aftereffect: a psychophysical study revealing spatial updating.

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