Cited by 65Functional Brain Connectivity StudiesSchizophrenia research and treatmentNeural dynamics and brain function

Abnormal intrinsic and extrinsic connectivity within the magnetic mismatch negativity brain network in schizophrenia: a preliminary study

Dima, D., Frangou, S., Burge, L., Braeutigam, S., James, A.C.·2012·Schizophrenia Research

Abstract

Altered neuroplasticity is increasingly invoked as a mechanism underpinning dysconnectivity in schizophrenia. We used Dynamic Causal Modelling to compare connectivity during the magnetic auditory Mismatch Negativity (MMN), an index of error prediction, between schizophrenia patients and controls. Patients showed reduced intrinsic connectivity within the primary auditory cortex suggestive of impaired local neuronal adaptation and disrupted forward and backward extrinsic connectivity throughout the MMN network indicative of reduced higher order input in disambiguating activity in lower network nodes. Our study provides the first empirical description of the dysplastic changes underpinning dysconnectivity between primary sensory and higher order cortical areas in schizophrenia.

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  • Dima et al. found significant differences in the intrinsic connection of the right primary auditory cortex (A1) and backward connection from the right inferior frontal gyrus (IFG) to the right superior temporal gyrus (STG) between schizophrenia and healthy controls.

    “They found significant differences in the intrinsic connection of the right primary auditory cortex (A1) and backward connection from the right inferior frontal gyrus (IFG) to the right superior temporal gyrus (STG) between schizophrenia and healthy controls.”

    From A Predictive Coding Perspective on Mismatch Negativity Impairment in Schizophrenia (2020) · cites this paper as [43]

    Section 4.1 (p. 10) reports the largest patient–control effect size for intrinsic A1 connectivity, particularly on the right. Section 4.2 (p. 11) reports increased, reversed-polarity backward IFG-to-STG coupling in patients; the model specification identifies the IFG as right-sided (Figure Legends, p. 16). The cited passages do not establish that either connection difference was statistically significant: Section 3.3 (p. 9) describes connection estimates and effect sizes, while the reported significant group differences concern the MMN response (Section 3.1, p. 9). (LLM, conf=0.84)

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Authors
Dima, D., Frangou, S., Burge, L., Braeutigam, S., & James, A. C.
Affiliations
  • King's College London (GB)
  • Warneford Hospital (GB)
Venue
Schizophrenia Research
Publisher
Elsevier BV
Published
2012-03
Volume
135
Issue
1-3
Pages
23-27
ISSN
0920-9964 (ISSN-L)
OpenAlex
W1995978544
Cited by
65
References
23
Citations by year
2026: 2 · 2025: 2 · 2024: 6 · 2023: 3 · 2022: 3 · 2021: 5 · 2020: 11 · 2019: 7 · 2018: 2 · 2017: 6 · 2016: 3 · 2015: 6 · 2014: 4 · 2013: 4
FWCI
2.29
Type
journal article
Language
en
Open access
closed
Locations
  • Schizophrenia Research (publishedVersion)
  • PubMed (publishedVersion)
  • City Research Online (City University London) (acceptedVersion)
  • Research Portal (King's College London) (submittedVersion)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Functional Brain Connectivity Studies
  • Health Sciences › Medicine › Psychiatry and Mental health › Schizophrenia research and treatment
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural dynamics and brain function
Keywords
schizophrenia, mismatch negativity
MeSH terms
Acoustic Stimulation, Adolescent, Auditory Pathways, Brain, Brain Mapping, Contingent Negative Variation, Electroencephalography, Evoked Potentials, Auditory, Female, Humans, Male, Models, Biological, Neuropsychological Tests, Schizophrenia, Time Factors

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