Frequency band of EMG in anaesthesia monitoring

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Frequency band of EMG in anaesthesia monitoring K. Kamata, A.J. Aho, S. Hagihira, A. Yli-Hankala, V. Jäntti British Journal of Anaesthesia Volume 107, Issue 5, Pages 822-823 (November 2011) DOI: 10.1093/bja/aer311 Copyright © 2011 The Author(s) Terms and Conditions

Fig 1 EEG, EMG signals at burst-suppression level under propofol anaesthesia. (a) Typical example of EEG (Fp1–M1) signal with overlying single motor unit potential (upper panel) and its EEG power spectrum (lower panel). This signal has peaks at 6.6 Hz and harmonic frequencies. (b) Submental muscle activity (upper panel) and its EMG power spectrum (lower panel). Power spectrum shows peaks at the firing frequencies of motor units and as a joint effect, the power spectrum reaches down to 0 Hz. British Journal of Anaesthesia 2011 107, 822-823DOI: (10.1093/bja/aer311) Copyright © 2011 The Author(s) Terms and Conditions