Figure 2 EEG changes in the patients with paroxysmal hypnogenic dyskinesia with PRRT2 mutations EEG changes in the patients with paroxysmal hypnogenic.

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Figure 2 EEG changes in the patients with paroxysmal hypnogenic dyskinesia with PRRT2 mutations EEG changes in the patients with paroxysmal hypnogenic dyskinesia with PRRT2 mutations (A) Interictal EEG of patient 1 obtained at the age of 20 years showed irregular delta activities in the bifrontal lobe, more dominant in the right frontal lobe. (B) Ictal EEG of patient 1. The attack started with rhythmic convulsions during non-REM sleep (NREM) stage II accompanied by muscle artifacts on EEG recording. It lasted 12 seconds, followed by slow waves in the bifrontal lobe, and returned to the sleeping background (NREM-IV) 1 minute later. (C) Interictal EEG of patient 2 obtained at the age of 10 years showed irregular generalized spikes and slow waves and (D) focal spike and waves in the right posterior temporal lobe. (E) Ictal recording of patient 2 showed that the patient awakened suddenly from NREM-II and presented irregular bilateral arm and leg choreoathetoid movements, accompanied by movement artifacts and generalized low- and medium-voltage theta slowing. The movements lasted 26 seconds, and the slowing continued for 1 minute. Xiao-Rong Liu et al. Neurol Genet 2016;2:e66 © 2016 American Academy of Neurology