[Relation of electrophysiological indices in various degrees of negative disorders in patients with schizophrenia].

Preliminary results of the investigation of "expectation wave" phenomenon in 25 schizophrenic patients aged 17 to 41 years (20 or less years since the onset of the disease) are presented. The control group consisted of 10 healthy persons. The characters of evoked responses in patients and normals were essentially different.