[Neurophysiological Features of Perception of Emotional Stimuli in Health and in Patients with Paranoid Schizophrenia].
Cognitive and emotional disorders, as far as is known, are the main syndromes of schizophrenia. Disorders of these functions are mainly determined by the clinical picture, as well as by psychophysiological correlates. The purpose of our study was to identify some psychophysiological factors which cause perceptual and emotional disturbances in patients with schizophrenia. These disorders of mental functions form the first rank (top) syndrome in patients with schizophrenia [1]. The studied patients had acute psychosis with a predominance of paranoid hallucinatory syndrome and did not receive antipsychotic therapy; i.e., the disturbances of sensory perception were most pronounced. The analysis of early component P100 and intermediate one N170 of event related potentials (ERPs) in the control group showed an increased level of excitation in response to emotionally threatening stimuli; the amplitude increased and the latency decreased in all leads. In contrast the analysis of components P100 and N170 in the group of patients with schizophrenia showed the increased latency and decreased amplitude. The obtained data provide evidence of pathological inhibition in the passive perception of emotionally significant stimuli.
A Yu
AY
Arkhipov
V B
VB
Strelets
D000293:Adolescent; D000328:Adult; D001921:Brain / Q000502:physiology*; D016022:Case-Control Studies; D004569:Electroencephalography; D004644:Emotions / Q000502:physiology*; D005074:Evoked Potentials, Visual / Q000502:physiology*; D005260:Female; D006801:Humans; D008297:Male; D009482:Neurophysiology; D010364:Pattern Recognition, Visual / Q000502:physiology*; D010775:Photic Stimulation; D011930:Reaction Time / Q000502:physiology*; D012563:Schizophrenia, Paranoid / Q000503:physiopathology / Q000523:psychology*; D055815:Young Adult