Beta oscillations in a large-scale sensorimotor cortical network: Directional influences revealed by Granger causality

DOI Web Site 被引用文献33件
  • Andrea Brovelli
    Center for Complex Systems and Brain Sciences, Florida Atlantic University, Boca Raton, FL 33431; and Laboratory of Neuropsychology, National Institute of Mental Health, Bethesda, MD 20892
  • Mingzhou Ding
    Center for Complex Systems and Brain Sciences, Florida Atlantic University, Boca Raton, FL 33431; and Laboratory of Neuropsychology, National Institute of Mental Health, Bethesda, MD 20892
  • Anders Ledberg
    Center for Complex Systems and Brain Sciences, Florida Atlantic University, Boca Raton, FL 33431; and Laboratory of Neuropsychology, National Institute of Mental Health, Bethesda, MD 20892
  • Yonghong Chen
    Center for Complex Systems and Brain Sciences, Florida Atlantic University, Boca Raton, FL 33431; and Laboratory of Neuropsychology, National Institute of Mental Health, Bethesda, MD 20892
  • Richard Nakamura
    Center for Complex Systems and Brain Sciences, Florida Atlantic University, Boca Raton, FL 33431; and Laboratory of Neuropsychology, National Institute of Mental Health, Bethesda, MD 20892
  • Steven L. Bressler
    Center for Complex Systems and Brain Sciences, Florida Atlantic University, Boca Raton, FL 33431; and Laboratory of Neuropsychology, National Institute of Mental Health, Bethesda, MD 20892

書誌事項

公開日
2004-06-21
DOI
  • 10.1073/pnas.0308538101
公開者
National Academy of Sciences

この論文をさがす

説明

<jats:p>Previous studies have shown that synchronized beta frequency (14-30 Hz) oscillations in the primary motor cortex are involved in maintaining steady contractions of contralateral arm and hand muscles. However, little is known about the role of postcentral cortical areas in motor maintenance and their patterns of interaction with motor cortex. We investigated the functional relations of beta-synchronized neuronal assemblies in pre- and postcentral areas of two monkeys as they pressed a hand lever during the wait period of a visual discrimination task. By using power and coherence spectral analysis, we identified a beta-synchronized large-scale network linking pre- and postcentral areas. We then used Granger causality spectra to measure directional influences among recording sites. In both monkeys, strong Granger causal influences were observed from primary somatosensory cortex to both motor cortex and inferior posterior parietal cortex, with the latter area also exerting Granger causal influences on motor cortex. Granger causal influences from motor cortex to postcentral sites, however, were weak in one monkey and not observed in the other. These results are the first, to our knowledge, to demonstrate in awake monkeys that synchronized beta oscillations bind multiple sensorimotor areas into a large-scale network during motor maintenance behavior and carry Granger causal influences from primary somatosensory and inferior posterior parietal cortices to motor cortex.</jats:p>

収録刊行物

被引用文献 (33)*注記

もっと見る

詳細情報 詳細情報について

問題の指摘

ページトップへ