Polyspike complexes
Pronunciation: POL-ee-spike
EEG pattern characterized by multiple sharp waves followed by slow waves, often associated with myoclonic seizures.
Full Definition
Polyspike complexes are distinctive EEG patterns consisting of multiple consecutive spike discharges (typically 2-6 spikes) followed by slow wave activity, creating a polyspike-and-wave pattern. These complexes are frequently associated with generalized epilepsy syndromes, particularly juvenile myoclonic epilepsy, and often correlate with myoclonic jerks. The pattern may be spontaneous or provoked by photic stimulation, and its recognition is crucial for accurate syndrome classification and treatment selection.
Usage
Usage note: Hyphenate when part of compound terms like 'polyspike-and-wave'; distinguish from single spike patterns.
In Context
- "The EEG demonstrated generalized polyspike complexes coinciding with myoclonic jerks." — EEG interpretation report
- "Polyspike complexes on photic stimulation confirmed photosensitive epilepsy." — Neurophysiology consultation