[Evoked potentials and the prediction of the efficacy of psychopharmaceutical agents].

The authors have studied early brain stem auditory evoked potentials (EPs) registered after a single intramuscular administration of 2.5 mg of haloperidol in 32 healthy volunteers and 14 schizophrenic patients. Haloperidol led to a significant decrease in the latency of wave V of brain stem auditory EPs in patients with schizophrenia and to its increase in normal subjects.