John Libbey Eurotext

Discrimination between ictal EEG and EMG activity based on digital EEG Volume 22, numéro 5, October 2020

Illustrations

  • Figure 1
Auteurs
National Epilepsy Center, Shizuoka Institute of Epilepsy and Neurological Disorders, NHO, Urushiyama 886, Aoi-ku, Shizuoka, Japan
* Correspondence: Norihiko Kawaguchi National Epilepsy Center, Shizuoka Epilepsy and Neurological Disorders, NHO, Urushiyama 886, Aoi-ku, Shizuoka, 420-8688, Japan

Time-frequency analysis is used to detect high-frequency components on intracranial and scalp EEG (Kobayashi et al, 2010; Zijlmans et al, 2017). However, analysis programs are not always available in clinical situations. We introduce a method to detect high-frequency components without special analysis programs. EEG activity shows sinusoidal waveform with stable / evolving frequency and stable / evolving amplitude. On the other hand, electromyogram (EMG) is sharply contoured with variable frequency [...]