Brain slow potentials (CNV), prolactin, and schizophrenia.

This is a study of possible CNV correlations to schizophrenia. Three groups of schizophrenic patients were examined: 14 patients with an initial acute psychotic illness, before and after neuroleptic therapy; 9 subjects with chronic schizophrenia, who did not require continuous neuroleptic therapy; 18 patients with chronic schizophrenia under almost continuous neuroleptic therapy for many years. The results were compared with CNV parameters of a control group. On the basis of the results obtained, the authors advance the view that the different modes of manifestation of cerebral bioelectric reactivity (CNV) are independent of treatment and are related to the different stages of the evolution of the disorder.