title: Intermittently occurring right-posterior slow waves (IRP) in psychiatric patients. An electroencephalographic indicator of cerebral dysfunction.
abstract: Intermittent right-posterior accentuated slow waves (irregular theta and/or delta waves: IRP phenomenon) in the EEG showed an incidence of about 5% in the total in-patients of a psychiatric university hospital. The IRP phenomenon was found in 7.5% of patients with schizophrenic psychoses, 2% of patients with affective psychoses and in 2.4% of patients with neurotic and personality disorders. The IRP groups differed from control groups in a number of sociobiographical and clinical characteristics. Having repeatedly confirmed these relationships with different samples, we regard IRP patients, irrespective of the diagnosis given, as having a maturational deficit of brain function.
authors.affiliation: Freie Universität Berlin, Department of Clinical Psychiatry, West Germany.
authors.forename: G
authors.initials: G
authors.lastname: Ulrich
authors.forename: D
authors.initials: D
authors.lastname: Bohn
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D003700:Delta Rhythm; D004569:Electroencephalography; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D019965:Neurocognitive Disorders / Q000503:physiopathology*; D009778:Occipital Lobe / Q000503:physiopathology*; D010296:Parietal Lobe / Q000503:physiopathology*; D019966:Substance-Related Disorders / Q000503:physiopathology; D013826:Theta Rhythm