Waves of consciousness: ongoing cortical patterns during binocular rivalry
We present here ongoing patterns of distributed brain synchronous activity that correlate with the spontaneous flow of perceptual dominance during binocular rivalry. Specific modulation of the magnetoencephalographic (MEG) response evoked during conscious perception of a frequency-tagged stimulus wa...
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| Veröffentlicht in: | NeuroImage (Orlando, Fla.) Fla.), 2004-09, Vol.23 (1), p.128-140 |
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| container_title | NeuroImage (Orlando, Fla.) |
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| creator | Cosmelli, Diego David, Olivier Lachaux, Jean-Philippe Martinerie, Jacques Garnero, Line Renault, Bernard Varela, Francisco |
| description | We present here ongoing patterns of distributed brain synchronous activity that correlate with the spontaneous flow of perceptual dominance during binocular rivalry. Specific modulation of the magnetoencephalographic (MEG) response evoked during conscious perception of a frequency-tagged stimulus was evidenced throughout rivalry. Estimation of the underlying cortical sources revealed, in addition to strong bilateral striate and extrastriate visual cortex activation, parietal, temporal pole and frontal contributions. Cortical activity was significantly modulated concomitantly to perceptual alternations in visual cortex, medial parietal and left frontal regions. Upon dominance, coactivation of occipital and frontal regions, including anterior cingulate and medial frontal areas, was established. This distributed cortical network, as measured by phase synchrony in the frequency tag band, was dynamically modulated in concert with the perceptual dominance of the tagged stimulus. While the anteroposterior pattern was recurrent through subjects, individual variations in the extension of the network were apparent. |
| doi_str_mv | 10.1016/j.neuroimage.2004.05.008 |
| format | Article |
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Specific modulation of the magnetoencephalographic (MEG) response evoked during conscious perception of a frequency-tagged stimulus was evidenced throughout rivalry. Estimation of the underlying cortical sources revealed, in addition to strong bilateral striate and extrastriate visual cortex activation, parietal, temporal pole and frontal contributions. Cortical activity was significantly modulated concomitantly to perceptual alternations in visual cortex, medial parietal and left frontal regions. Upon dominance, coactivation of occipital and frontal regions, including anterior cingulate and medial frontal areas, was established. This distributed cortical network, as measured by phase synchrony in the frequency tag band, was dynamically modulated in concert with the perceptual dominance of the tagged stimulus. 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Specific modulation of the magnetoencephalographic (MEG) response evoked during conscious perception of a frequency-tagged stimulus was evidenced throughout rivalry. Estimation of the underlying cortical sources revealed, in addition to strong bilateral striate and extrastriate visual cortex activation, parietal, temporal pole and frontal contributions. Cortical activity was significantly modulated concomitantly to perceptual alternations in visual cortex, medial parietal and left frontal regions. Upon dominance, coactivation of occipital and frontal regions, including anterior cingulate and medial frontal areas, was established. This distributed cortical network, as measured by phase synchrony in the frequency tag band, was dynamically modulated in concert with the perceptual dominance of the tagged stimulus. 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| source | MEDLINE; ScienceDirect Journals (5 years ago - present); ProQuest Central UK/Ireland |
| subjects | Adult Attention - physiology Binocular rivalry Brain Brain Mapping Cerebral Cortex - physiology Consciousness Consciousness - physiology Cortical activity Dominance, Cerebral - physiology Evoked Potentials, Visual - physiology Female Humans Image Processing, Computer-Assisted Imaging, Three-Dimensional Magnetoencephalography Male Nerve Net - physiology Pattern Recognition, Visual - physiology Perceptual dominance Reference Values Vision Disparity - physiology Visual Cortex - physiology Visual Pathways - physiology |
| title | Waves of consciousness: ongoing cortical patterns during binocular rivalry |
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