EEG features of absence seizures in idiopathic generalized epilepsy: Impact of syndrome, age, and state

Abstract

PURPOSE: Factors influencing the electroencephalography (EEG) features of absence seizures in newly presenting children with idiopathic generalized epilepsy (IGE) have not been rigorously studied. We examined how specific factors such as state, provocation, age, and epilepsy syndrome affect the EEG features of absence seizures. METHODS: Children with untreated absence seizures were studied using video-EEG recording. The influence of state of arousal, provocation (hyperventilation, photic stimulation), age, and epilepsy syndrome on specific EEG features was analyzed. RESULTS: Five hundred nine seizures were evaluated in 70 children with the following syndromes: childhood absence epilepsy (CAE..