Movie S1.

Seizure onset recorded from the MEA in patient 2, with the multiunit activity showing the ictal wavefront (Left) and 2- to 50-Hz LFP amplitude (Right); 5 s of the recording are shown beginning 0.5 s before onset. The trace at the top shows 2- to 50-Hz activity from a representative microelectrode. This trace resembles the nearby ECoG recording. Reprinted with permission from ref. 2.