Abstract
The routine EEG of 301 schizophrenics during psychopharmacotherapy (156 females and 145 males and 129 (56 females and 73 males) untreated patients were analysed. The number of EEG abnormalities in treated vs untreated patients, females vs males, treated females vs males as well as untreated females vs males were compared using chi2-test. We found more EEG abnormalities in treated and untreated females as well as greater increase of EEG abnormalities in males during psychopharmacotherapy.