Types of spontaneous electrographic NCS (A) and behavioral CS episodes (B-F) observed during the first 4 weeks.

<p>(A) The stage-2 type of spontaneous electrographic NCS ending with the HFT spikes had no behavioral correlates. Five types of spontaneous behavioral CS were identified. (B) the stage-3 type ending with the HFT spikes (C) the stage-3 to -4 type episode ending with the HFT spikes, (D-F) the stage-5 episodes preceded by the stage-3 and -4 type spikes with wild running (D) or without wild running and/or ending with lateral recumbence/rigidity (F), which is characterized by low amplitude spikes on the EEG compared to the baseline. (E) The stage-5 episode was preceded by the stage-3 and -4 types followed by several jumps and may end with lateral recumbence/rigidity. In all the spontaneous CS types, the stage-3 component increases the gamma power while, the increase in the activity counts corresponds to the movements due to seizures during this period. The gamma power decreases in the stage-5 except during jumping and wild running, which also coincides with the increased activity counts.