Evidence map›Paper›PMID 29684224›Full record

ArticleSchizophrenia bulletin2019

Mismatch Negativity and Cortical Thickness in Patients With Schizophrenia and Bipolar Disorder.

Sungkean Kim, Hyeonjin Jeon, Kuk-In Jang, Yong-Wook Kim, Chang-Hwan Im, Seung-Hwan Lee

Abstract read
In one paragraph

Article in Schizophrenia bulletin, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed, 1 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

17 citing papers in PubMed, 1 synthesis or guideline pooled it.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors.

Sungkean KimClinical Emotion and Cognition Research Laboratory, Inje University, Goyang, Republic of Korea.
Hyeonjin JeonClinical Emotion and Cognition Research Laboratory, Inje University, Goyang, Republic of Korea.
Kuk-In JangClinical Emotion and Cognition Research Laboratory, Inje University, Goyang, Republic of Korea.
Yong-Wook KimClinical Emotion and Cognition Research Laboratory, Inje University, Goyang, Republic of Korea.
Chang-Hwan ImDepartment of Biomedical Engineering, Hanyang University, Seoul, Republic of Korea.
Seung-Hwan LeeClinical Emotion and Cognition Research Laboratory, Inje University, Goyang, Republic of Korea.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionMismatch negativity (MMN) is a measure of automatic neurophysiological brain processes for detecting unexpected sensory stimuli. This study investigated MMN reduction in patients with schizophrenia and bipolar disorder and examined whether cortical thickness is associated with MMN, for exploratory purposes.

methodsElectroencephalograms were recorded in 38 patients with schizophrenia, 37 patients with bipolar disorder, and 32 healthy controls (HCs) performing a passive auditory oddball paradigm. All participants underwent T1 structural magnetic resonance imaging scanning to investigate the cortical thickness of MMN-generating regions. Average MMN amplitudes from the frontocentral electrodes were analyzed.

resultsPatients with schizophrenia and bipolar disorder exhibited significantly reduced MMN amplitude compared with HCs. In bipolar disorder, we found intermediate MMN amplitude among the groups. Average MMN and cortical thickness of the right superior temporal gyrus (STG) were significantly negatively correlated in patients with schizophrenia. In patients with bipolar disorder, average MMN was significantly correlated with cortical thickness of the left anterior cingulate cortex and the right STG. MMN showed negative correlations with social and occupational functioning in schizophrenia, and with the Korean auditory verbal learning test for delayed recall in bipolar disorder.

conclusionsMMN reduction was associated with cortical thinning in frontal and temporal areas in patients, particularly with an auditory verbal hallucination-related region in schizophrenia and emotion-related regions in bipolar disorder. MMN was associated with functional outcomes in schizophrenia, whereas it was associated with neurocognition in bipolar disorder.

Indexed as

AdultAuditory PerceptionBipolar DisorderElectroencephalographyEvoked Potentials, AuditoryFemaleFrontal LobeHumansMagnetic Resonance ImagingMaleMiddle AgedSchizophreniaTemporal LobeYoung Adultbipolar disordercortical thicknessmismatch negativityschizophrenia

Identifiers

PMID29684224
PMCPMC6403065

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