Group1: Ictal EEG in a 6-year-old boy (Pt5, Lys601Gln). (A) Left hyperkinetic seizure: Ictal discharge characterized by rapid spikes, starting on the left middle and posterior areas and spreading to the same right regions, followed by diffuse slow waves. After 10 s, a discharge of rapid SW started on the left occipital regions, lasting 20 s. (B) Right focal seizure characterized by sustained right deviation of the eyes and head, followed by eye clonic movements. Ictal discharge, starting in the right posterior regions, characterized by rapid spikes, then by SW and then again by rapid spikes. (C) Muscle artifacts associated with a startle response without paroxysmal abnormalities.