Waves of consciousness: ongoing cortical patterns during binocular rivalry

被引：87

作者：

Cosmelli, D ^{[1
]}

David, O ^{[1
]}

Lachaux, JP ^{[1
]}

Martinerie, J ^{[1
]}

Garnero, L ^{[1
]}

Renault, B ^{[1
]}

Varela, F ^{[1
]}

机构：

[1] Hop La Pitie Salpetriere, CNRS, UPR 640, Cognit Neurosci & Brain Imaging Lab, F-75651 Paris 13, France

来源：

NEUROIMAGE | 2004年 / 23卷 / 01期

基金：

英国惠康基金;

关键词：

binocular rivalry; cortical activity; perceptual dominance;

D O I：

10.1016/j.neuroimage.2004.05.008

中图分类号：

Q189 [神经科学];

学科分类号：

071006 ;

摘要：

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. (C) 2004 Elsevier Inc. All rights reserved.

引用

页码：128 / 140

页数：13

共 67 条

[1] Minimizing rivalry in San Miniato [J].