期刊
JOURNAL OF NEUROPHYSIOLOGY
卷 100, 期 3, 页码 1562-1575出版社
AMER PHYSIOLOGICAL SOC
DOI: 10.1152/jn.90613.2008
关键词
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资金
- National Institutes of Health
- Canadian Institutes of Health Research
- Natural Science and Engineering Research Council of Canada
Cortical gamma oscillations in the 20- to 80-Hz range are associated with attentiveness and sensory perception and have strong connections to both cognitive processing and temporal binding of sensory stimuli. These gamma oscillations become synchronized within a few milliseconds over distances spanning a few millimeters in spite of synaptic delays. In this study using in vivo recordings and large-scale cortical network models, we reveal a critical role played by the network geometry in achieving precise long-range synchronization in the gamma frequency band. Our results indicate that the presence of many independent synaptic pathways in a two-dimensional network facilitate precise phase synchronization of fast gamma band oscillations with nearly zero phase delays between remote network sites. These findings predict a common mechanism of precise oscillatory synchronization in neuronal networks.
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