期刊
CURRENT OPINION IN NEUROBIOLOGY
卷 25, 期 -, 页码 7-14出版社
CURRENT BIOLOGY LTD
DOI: 10.1016/j.conb.2013.10.007
关键词
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资金
- NIH-NICHD [HD51912]
- James S. McDonnell Foundation
Brain injury profoundly affects global brain dynamics, and these changes are manifest in the electroencephalogram (EEG). Despite the heterogeneity of injury mechanisms and the modularity of brain function, there is a commonality of dynamical features that characterize the EEG along the gamut from coma to recovery. After severest injury, EEG activity is concentrated below 1 Hz. In minimally conscious state during wakefulness, there is a peak of activity in the 3-7 Hz range, often coherent across the brain, and often also activity in the beta (15-30 Hz) range. These spectral changes likely result from varying degrees of functional deafferentation at thalamic and cortical levels. EEG-based indices of brain dynamics that go beyond these simple spectral measures may provide further diagnostic information and physiologic insights.
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