Figure 1: Ictal electroencephalography showed diffuse high-amplitude, slow-wave activity in the frontotemporal and frontocentral regions with occasional rhythmicity and spike waves (a). Interictal electroencephalography showed left frontal and bilateral frontal spikes and polyspikes wave discharges during sleep (b). LFF: 1 Hz, HFF: 70 Hz. Sensitivity 200 microvolt