Scalp electrical recording during paralysis: Quantitative evidence that EEG frequencies above 20Hz are contaminated by EMG

  title={Scalp electrical recording during paralysis: Quantitative evidence that EEG frequencies above 20Hz are contaminated by EMG},
  author={E. Whitham and K. Pope and S. Fitzgibbon and T. Lewis and J. Willoughby},
  journal={Clinical Neurophysiology},
OBJECTIVE To identify the possible contribution of electromyogram (EMG) to scalp electroencephalogram (EEG) rhythms at rest and induced or evoked by cognitive tasks. METHODS Scalp EEG recordings were made on two subjects in presence and absence of complete neuromuscular blockade, sparing the dominant arm. The subjects undertook cognitive tasks in both states to allow direct comparison of electrical recordings. RESULTS EEG rhythms in the paralysed state differed significantly compared with… Expand
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