articleProceedings of the National Academy of SciencesOct 8, 2008GREEN OA

Electrophysiological correlates of the brain's intrinsic large-scale functional architecture

BJBiyu J. HeAZAbraham Z. SnyderJZJohn ZempelMDMatthew D. SmythMEMarcus E. Raichle

Neurology, Inc · Washington University in St. Louis · +1 more institution

PubMed
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Abstract

Spontaneous fluctuations in the blood-oxygen-level-dependent (BOLD) signals demonstrate consistent temporal correlations within large-scale brain networks associated with different functions. The neurophysiological correlates of this phenomenon remain elusive. Here, we show in humans that the slow cortical potentials recorded by electrocorticography demonstrate a correlation structure similar to that of spontaneous BOLD fluctuations across wakefulness, slow-wave sleep, and rapid-eye-movement sleep. Gamma frequency power also showed a similar correlation structure but only during wakefulness and rapid-eye-movement sleep. Our results provide an important bridge between the large-scale brain networks readily…

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698
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5

Topics & keywords

Topics
Keywords
  • Wakefulness
  • Neurophysiology
  • Electrocorticography
  • Neuroscience
  • Electrophysiology
  • Electroencephalography
  • Sleep (system call)
  • Eye movement
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