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Neuropsychological correlates of N400 anomalies in patients with schizophrenia: A preliminary report

Cited 7 time in Web of Science Cited 9 time in Scopus
Authors
Shin, Kyung Soon; Kang, Do-Hyung; Choi, Jung-Seok; Kim, Young Youn; Kwon, Jun Soo
Issue Date
2008-10-28
Publisher
Elsevier
Citation
Neurosci Lett. 2008 26;448(2):226-30.
Keywords
AdultAnalysis of VarianceBrain/*physiopathologyCognition Disorders/*physiopathologyElectroencephalographyEvoked PotentialsFemaleHumansMaleNeuropsychological TestsPsychomotor PerformanceReaction TimeSchizophrenia/*physiopathologySchizophrenic PsychologySemanticsSeverity of Illness IndexYoung Adult
Abstract
We investigated N400 anomalies and their relationship with neuropsychological disturbance of schizophrenia. Twelve patients with schizophrenia and 12 normal controls, matched for age, sex, education and handedness underwent both the neuropsychological test and the electrophysiological recordings employing semantic violation sentence paradigm. The patients with schizophrenia showed a reduced N400 amplitude and worse performance in the frontal lobe function test compared to healthy participants. Furthermore, statistically significant positive correlations were found between N400 amplitude and neuropsychological performances on the Stroop Task and Wisconsin Card Sorting Test in patients with schizophrenia. Our results suggest the possibility that N400 anomalies reflect the disturbed integrity of the fronto-temporal network in schizophrenia evidenced by neuropsychological deficits. In addition, we concluded that the N400 amplitude is a candidate for an endophenotype marker of schizophrenia by revealing its relationship to neuropsychological deficits.
ISSN
0304-3940 (Print)
Language
English
URI
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&dopt=Citation&list_uids=18952145

http://hdl.handle.net/10371/63337
DOI
https://doi.org/10.1016/j.neulet.2008.10.053
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College of Medicine/School of Medicine (의과대학/대학원)Psychiatry (정신과학전공)Journal Papers (저널논문_정신과학전공)
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