A quantitative statistical analysis of the submentalis muscle EMG amplitude during sleep in normal controls and patients with REM sleep behavior disorder

  title={A quantitative statistical analysis of the submentalis muscle EMG amplitude during sleep in normal controls and patients with REM sleep behavior disorder},
  author={Raffaele Ferri and Mauro Manconi and Giuseppe Plazzi and Oliviero Bruni and Stefano Vandi and Pasquale Montagna and Luigi Ferini-Strambi and Marco Zucconi},
  journal={Journal of Sleep Research},
The aim of this study was to evaluate quantitatively the amplitude of the submentalis muscle EMG activity during sleep in controls and in patients with idiopathic REM sleep behavior disorder (RBD) or with RBD and multiple system atrophy (MSA). We recruited 21 patients with idiopathic RBD, 10 with MSA, 10 age‐matched and 24 young normal controls. The average amplitude of the rectified submentalis muscle EMG signal was used for the assessment of atonia and a Sleep Atonia Index was developed… 
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Identifying periods of tonic and phasic activities of the submentalis muscle during REM sleep is useful to discriminate patients with idiopathic RBD from controls.
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