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[Event-related potentials in schizophrenic patients in the acute phase and in remission].

In 15 schizophrenic patients event-related potentials were recorded during an auditory two-tone-discrimination task in the acute phase and after remission. The control group consisted of ten healthy subjects of the same age. The schizophrenic patients showed reduced amplitudes of N1, P2 and P3 and prolonged latencies of N2 and P3 independent of neuroleptic medication and clinical state. We found no differences in the topographical distribution of P3 between schizophrenic patients and controls. The changes of the event-related potentials in the schizophrenic patients may be interpreted as electrophysiological correlates of basic disturbances in information processing in schizophrenia.