fig1

Figure 1. EEG demonstrating focal slowing, focal spikes, and a focal onset seizure in a patient with an intronic splice site missense variant (patient #18 in [Table 1]). EEG was performed at age 3 years. A: Right temporal delta slowing with right temporal spikes in common average reference montage; B: Right temporal onset seizure in longitudinal bipolar montage, shown in 15 mm/s time scale. EEG: electroencephalogram.