PMC5357742_01
A: Awake state. B: Sleep.
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EEG in the awake state showed an abnormal activity with diffuse, sometimes rhythmic, slow waves (0.5-3 Hz) predominates over the left hemisphere, contralateral to the abnormal movements Fig. 1A). During non-REM sleep, the EEG showed bursts of atypical fronto-central theta rhythms also predominating over the left hemisphere (Fig. 1B/Video-EEG).