Glossary of Sleep-related terms

Epileptic discharge

A neuronal discharge characterized by the simultaneous excessive activation of a large number of cells which may be recorded by electroencephalographic techniques as a paroxysmal wave form. It is usually in the form of a spike, sharp wave, spike and wave or other such complex. Such discharges may be without clinical accompaniment (interictal discharges) or become sufficiently extended in space and in time to produce an epileptic seizure (ictal discharges).4