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October 2021

P300 in family studies of schizophrenia: review and critique

Author(s): Gangadhar, B. N., Janakiramaiah, N.

Journal/Book: Int J Psychophysiol. 2000; 38: PO Box 211, 1000 AE Amsterdam, Netherlands. Elsevier Science Bv. 43-54.

Abstract: The published studies using P300 event-related potential (ERP) as a vulnerability marker in schizophrenia have been summarized and reviewed. Several factors across sibling, offspring, and familial studies appear to contribute to the variegated findings with respect to the utility of P300 as a vulnerability marker for schizophrenia. These include how subject samples are defined in terms of their genetic loading for schizophrenia, sample size, ERP methodology, and the relationship of P300 measures to neuropsychological test outcomes. It was concluded that the P300 holds promise as a vulnerability marker for schizophrenia, if used in conjunction with other neuroimaging and neuropsychological testing methods.

Note: Review Bharath S, Natl Inst Mental Hlth & Neurosci, NIMHANS, Bangalore 560029, Karnataka, INDIA

Keyword(s): P300; schizophrenia; vulnerability marker; high-risk population; EVENT-RELATED POTENTIALS; BRAIN POTENTIALS; STIMULUS MODALITY; DIZYGOTIC TWINS; RISK; CHILDREN; ABNORMALITIES; ALCOHOLISM; HERITABILITY; RELATIVES


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