Oscillatory Synchronization in Large-Scale Cortical Networks Predicts Perception
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Hipp-2011-Oscillatory Synchron.pdf
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Author(s)
Hipp, Joerg F.
Engel, Andreas K.
Siegel, Markus
Date Issued
January 2011
Journal
Neuron
Publisher
Elsevier
Citation
Hipp, Joerg F., Andreas K. Engel, and Markus Siegel. “Oscillatory Synchronization in Large-Scale Cortical Networks Predicts Perception.” Neuron 69, no. 2 (January 2011): 387–396. © 2011 Elsevier Inc.
Version
Final published version
Abstract
Normal brain function requires the dynamic interaction of functionally specialized but widely distributed cortical regions. Long-range synchronization of oscillatory signals has been suggested to mediate these interactions within large-scale cortical networks, but direct evidence is sparse. Here we show that oscillatory synchronization is organized in such large-scale networks. We implemented an analysis approach that allows for imaging synchronized cortical networks and applied this technique to EEG recordings in humans. We identified two networks: beta-band synchronization (∼20 Hz) in a fronto-parieto-occipital network and gamma-band synchronization (∼80 Hz) in a centro-temporal network. Strong perceptual correlates support their functional relevance: the strength of synchronization within these networks predicted the subjects' percept of an ambiguous audiovisual stimulus as well as the integration of auditory and visual information. Our results provide evidence that oscillatory neuronal synchronization mediates neuronal communication within frequency-specific, large-scale cortical networks.
MIT Department
Picower Institute for Learning and Memory
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1016/j.neuron.2010.12.027
