Predicting visual consciousness electrophysiologically from intermittent binocular rivalry.

<h4>Purpose</h4>We sought brain activity that predicts visual consciousness.<h4>Methods</h4>We used electroencephalography (EEG) to measure brain activity to a 1000-ms display of sine-wave gratings, oriented vertically in one eye and horizontally in the other. This display yi...

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Autores principales:	Robert P O'Shea, Jürgen Kornmeier, Urte Roeber
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2013
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/d5790de0698b4235b560b079ea3cf3eb
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spelling	oai:doaj.org-article:d5790de0698b4235b560b079ea3cf3eb2021-11-18T08:52:26ZPredicting visual consciousness electrophysiologically from intermittent binocular rivalry.1932-620310.1371/journal.pone.0076134https://doaj.org/article/d5790de0698b4235b560b079ea3cf3eb2013-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/24124536/?tool=EBIhttps://doaj.org/toc/1932-6203<h4>Purpose</h4>We sought brain activity that predicts visual consciousness.<h4>Methods</h4>We used electroencephalography (EEG) to measure brain activity to a 1000-ms display of sine-wave gratings, oriented vertically in one eye and horizontally in the other. This display yields binocular rivalry: irregular alternations in visual consciousness between the images viewed by the eyes. We replaced both gratings with 200 ms of darkness, the gap, before showing a second display of the same rival gratings for another 1000 ms. We followed this by a 1000-ms mask then a 2000-ms inter-trial interval (ITI). Eleven participants pressed keys after the second display in numerous trials to say whether the orientation of the visible grating changed from before to after the gap or not. Each participant also responded to numerous non-rivalry trials in which the gratings had identical orientations for the two eyes and for which the orientation of both either changed physically after the gap or did not.<h4>Results</h4>We found that greater activity from lateral occipital-parietal-temporal areas about 180 ms after initial onset of rival stimuli predicted a change in visual consciousness more than 1000 ms later, on re-presentation of the rival stimuli. We also found that less activity from parietal, central, and frontal electrodes about 400 ms after initial onset of rival stimuli predicted a change in visual consciousness about 800 ms later, on re-presentation of the rival stimuli. There was no such predictive activity when the change in visual consciousness occurred because the stimuli changed physically.<h4>Conclusion</h4>We found early EEG activity that predicted later visual consciousness. Predictive activity 180 ms after onset of the first display may reflect adaption of the neurons mediating visual consciousness in our displays. Predictive activity 400 ms after onset of the first display may reflect a less-reliable brain state mediating visual consciousness.Robert P O'SheaJürgen KornmeierUrte RoeberPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 8, Iss 10, p e76134 (2013)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Robert P O'Shea Jürgen Kornmeier Urte Roeber Predicting visual consciousness electrophysiologically from intermittent binocular rivalry.
description	<h4>Purpose</h4>We sought brain activity that predicts visual consciousness.<h4>Methods</h4>We used electroencephalography (EEG) to measure brain activity to a 1000-ms display of sine-wave gratings, oriented vertically in one eye and horizontally in the other. This display yields binocular rivalry: irregular alternations in visual consciousness between the images viewed by the eyes. We replaced both gratings with 200 ms of darkness, the gap, before showing a second display of the same rival gratings for another 1000 ms. We followed this by a 1000-ms mask then a 2000-ms inter-trial interval (ITI). Eleven participants pressed keys after the second display in numerous trials to say whether the orientation of the visible grating changed from before to after the gap or not. Each participant also responded to numerous non-rivalry trials in which the gratings had identical orientations for the two eyes and for which the orientation of both either changed physically after the gap or did not.<h4>Results</h4>We found that greater activity from lateral occipital-parietal-temporal areas about 180 ms after initial onset of rival stimuli predicted a change in visual consciousness more than 1000 ms later, on re-presentation of the rival stimuli. We also found that less activity from parietal, central, and frontal electrodes about 400 ms after initial onset of rival stimuli predicted a change in visual consciousness about 800 ms later, on re-presentation of the rival stimuli. There was no such predictive activity when the change in visual consciousness occurred because the stimuli changed physically.<h4>Conclusion</h4>We found early EEG activity that predicted later visual consciousness. Predictive activity 180 ms after onset of the first display may reflect adaption of the neurons mediating visual consciousness in our displays. Predictive activity 400 ms after onset of the first display may reflect a less-reliable brain state mediating visual consciousness.
format	article
author	Robert P O'Shea Jürgen Kornmeier Urte Roeber
author_facet	Robert P O'Shea Jürgen Kornmeier Urte Roeber
author_sort	Robert P O'Shea
title	Predicting visual consciousness electrophysiologically from intermittent binocular rivalry.
title_short	Predicting visual consciousness electrophysiologically from intermittent binocular rivalry.
title_full	Predicting visual consciousness electrophysiologically from intermittent binocular rivalry.
title_fullStr	Predicting visual consciousness electrophysiologically from intermittent binocular rivalry.
title_full_unstemmed	Predicting visual consciousness electrophysiologically from intermittent binocular rivalry.
title_sort	predicting visual consciousness electrophysiologically from intermittent binocular rivalry.
publisher	Public Library of Science (PLoS)
publishDate	2013
url	https://doaj.org/article/d5790de0698b4235b560b079ea3cf3eb
work_keys_str_mv	AT robertposhea predictingvisualconsciousnesselectrophysiologicallyfromintermittentbinocularrivalry AT jurgenkornmeier predictingvisualconsciousnesselectrophysiologicallyfromintermittentbinocularrivalry AT urteroeber predictingvisualconsciousnesselectrophysiologicallyfromintermittentbinocularrivalry
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Predicting visual consciousness electrophysiologically from intermittent binocular rivalry.

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