Beta oscillations in a large-scale sensorimotor cortical network: Directional influences revealed by Granger causality
National Institute of Mental Health · Florida Atlantic University
Abstract
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…
Citation impact
- FWCI
- 13.20
- Percentile
- 100%
- References
- 53
Authors
6- ABAndrea Brovelli
National Institute of Mental Health, Florida Atlantic University
- MDMingzhou Ding
National Institute of Mental Health, Florida Atlantic University
- ALAnders Ledberg
National Institute of Mental Health, Florida Atlantic University
- YCYonghong Chen
National Institute of Mental Health, Florida Atlantic University
- RNRichard Nakamura
National Institute of Mental Health, Florida Atlantic University
Topics & keywords
- Neuroscience
- Somatosensory system
- Motor cortex
- Primary motor cortex
- Posterior parietal cortex
- Granger causality
- Cortex (anatomy)
- BETA (programming language)
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