Features of Auditory P300 in Relatives of Schizophrenic Patients
2001
The subjects were parents, siblings, and children of schizophrenic patients. Auditory evoked potentials (EPs) (P300) were recorded in the standard oddball paradigm with a probability of the target stimuli presentation of 0.2 and sound (tone) intensity of 60 dB. A comparison of these data with the results of the examination of reference groups (normal subjects free of a family history of mental pathology) showed significantly longer latent periods of N1, N2, and P3 in EPs to target stimuli in siblings and children of schizophrenic patients, as well as significantly decreased amplitudes of N1 and P2 in EPs to nontarget (standard) stimuli and longer latent periods of N2 in EPs to target stimuli in the parents of schizophrenic patients.
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