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• W2553557322 abstract "Schizophrenia (SZ) is a severe mental illness with high heritability and complex etiology. Mounting evidence from neuroimaging has implicated disrupted brain network connectivity in the pathophysiology. However, previous findings are inconsistent, likely due to a combination of methodological and clinical variability and relatively small sample sizes. Few studies have used a data-driven approach for characterizing pathological interactions between regions in the whole brain and evaluated the generalizability across independent samples. To overcome this issue, we collected resting-state functional magnetic resonance imaging data from 3 independent samples (1 from Norway and 2 from Sweden) consisting of 182 persons with a SZ spectrum diagnosis and 348 healthy controls. We used a whole-brain data-driven definition of network nodes and regularized partial correlations to evaluate and compare putatively direct brain network node interactions between groups. The clinical utility of the functional connectivity features and the generalizability of effects across samples were evaluated by training and testing multivariate classifiers in the independent samples using machine learning. Univariate analyses revealed 14 network edges with consistent reductions in functional connectivity encompassing frontal, somatomotor, visual, auditory, and subcortical brain nodes in patients with SZ. We found a high overall accuracy in classifying patients and controls (up to 80%) using independent training and test samples, strongly supporting the generalizability of connectivity alterations across different scanners and heterogeneous samples. Overall, our findings demonstrate robust reductions in functional connectivity in SZ spectrum disorders, indicating disrupted information flow in sensory, subcortical, and frontal brain regions." @default.
• W2553557322 created "2016-11-30" @default.
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• W2553557322 date "2016-11-21" @default.
• W2553557322 modified "2023-10-15" @default.
• W2553557322 title "Consistent Functional Connectivity Alterations in Schizophrenia Spectrum Disorder: A Multisite Study" @default.
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• W2553557322 doi "https://doi.org/10.1093/schbul/sbw145" @default.
• W2553557322 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/5515107" @default.
• W2553557322 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/27872268" @default.
• W2553557322 hasPublicationYear "2016" @default.
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