Figure 2.

Electroencephalogram of patient 14 in Table 1: before treatment (A–C), after treatment (D), and after seizure recurrence (E,F). (A) Background diffuse slow waves. (B) Spike waves were primarily present in the bilateral occipital and posterior temporal regions. (C) Eye opening in a patient, poor response to external stimuli, and absence of convulsions. Synchronized electroencephalography showed diffuse high-extremely high wave amplitude in various brain regions and the absence of intermittent discharge at the 1–1.5 Hz δ area, indicating NCSE. (D) Normal electroencephalography after treatment. (E,F) After epileptic seizures recurred, electroencephalograms showed right frontal pole, frontal, and anterior temporal spike waves, and several discharges of spike-slow waves were observed during sleep.