Fig. 2

 A case of atypical absence seizures in LGS (No. 1 in Table 1). a-d Intracranial hemorrhage caused by trauma at 12 days after birth, with subsequent encephalomalacia. e Interictal asymmetric slow-spike and wave discharges (SWDs) are obvious on the right. f EEG showed a paroxysmal fast activity (PFA) pattern during sleep. g Scalp EEG showed 1.5–2.5 Hz asymmetric SWDs during atypical absence seizures