FIG. 1.

Electrographic seizure discharges >30 min in duration fit the definition of status epilepticus (SE). Self-sustaining epileptic activity (SE) triggered by repeated stimulus trains in a hippocampal–entorhinal cortical slice prepared from a 30-day-old animal. Continuous SE was triggered after the eighth stimulus train, which persisted for >1 h. The increasing duration of the afterdischarges can be seen in the earlier stimulus trains. DG, dentate gyrus; EC, entorhinal cortex.