Cited by 30Schizophrenia research and treatmentNeural dynamics and brain functionHallucinations in medical conditions

Aberrant temporal behavior of mismatch negativity generators in schizophrenia patients and subjects at clinical high risk for psychosis

Kim, Minah, Cho, Kang Ik Kevin, Yoon, Youngwoo Bryan, Lee, Tae Young, Kwon, Jun Soo·2017·Clinical Neurophysiology

Abstract

Objective Although disconnection syndrome has been considered a core pathophysiologic mechanism of schizophrenia, little is known about the temporal behavior of mismatch negativity (MMN) generators in individuals with schizophrenia or clinical high risk (CHR) for psychosis.Methods MMN was assessed in 29 schizophrenia patients, 40 CHR subjects, and 47 healthy controls (HCs). Individual realistic head models and the minimum L2 norm algorithm were used to generate a current source density (CSD) model of MMN. The strength and time course of MMN CSD activity were calculated separately for the frontal and temporal cortices and were compared across brain regions and groups.Results Schizophrenia patients and CHR subjects displayed lower MMN CSD strength than HCs in both the temporal and frontal cortices. We found a significant time delay in MMN generator activity in the frontal cortex relative to that in the temporal cortex in HCs. However, the sequential temporo-frontal activities of MMN generators were disrupted in both the schizophrenia and CHR groups.Conclusions Impairments and altered temporal behavior of MMN multiple generators were observed even in individuals at risk for psychosis.Significance These findings suggest that aberrant MMN generator activity might be helpful in revealing the pathophysiology of schizophrenia.

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Crossref · 10.1016/j.clinph.2016.11.027

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Authors
Kim, M., Cho, K. I. K., Yoon, Y. B., Lee, T. Y., & Kwon, J. S.
Affiliations
Seoul National University (KR)
Corresponding author
Kwon, Jun Soo
Venue
Clinical Neurophysiology
Publisher
Elsevier BV
Published
2017-02
Volume
128
Issue
2
Pages
331-339
ISSN
1388-2457 (ISSN-L)
OpenAlex
W2565916550
Cited by
30
References
60
Citations by year
2026: 2 · 2025: 2 · 2024: 2 · 2023: 4 · 2022: 2 · 2021: 2 · 2020: 6 · 2019: 5 · 2018: 2 · 2017: 3
FWCI
2.97
Type
journal article
Language
en
Open access
closed
Locations
  • Clinical Neurophysiology (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Research Foundation of Korea
Topics
  • Health Sciences › Medicine › Psychiatry and Mental health › Schizophrenia research and treatment
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural dynamics and brain function
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Hallucinations in medical conditions
Keywords
mismatch negativity, schizophrenia, clinical high risk for psychosis, current source density, disconnection syndrome, frontal cortex, temporal cortex, auditory event-related potentials, schizophrenia pathophysiology
MeSH terms
Adolescent, Adult, Evoked Potentials, Female, Frontal Lobe, Humans, Male, Psychotic Disorders, Schizophrenia, Temporal Lobe, Case-Control Studies, Connectome

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