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Brain structural covariance network differences in adults with alcohol by Jonatan Ottino-González, Hugh Garavan et al

Background and aims: Graph theoretic analysis of structural covariance networks (SCN) provides an assessment of brain organization that has not yet been applied to alcohol dependence (AD). We estimated whether SCN differences are present in adults with AD and heavy-drinking adolescents at age 19 and age 14, prior to substantial exposure to alcohol. Design: Cross-sectional sample of adults and a cohort of adolescents. Correlation matrices for cortical thicknesses across 68 regions were summarized with graph theoretic metrics. Setting and participants: A total of 745 adults with AD and 979 non-dependent controls from 24 sites curated by the Enhancing NeuroImaging Genetics through Meta Analysis (ENIGMA)–Addiction consortium, and 297 hazardous drinking adolescents and 594 controls at ages 19 and 14 from the IMAGEN study, all from Europe. Measurements: Metrics of network segregation (modularity, clustering coefficient and local efficiency) and integration (average shortest path length and

Clarkson professor wins prestigious grant to study polarization in social media

Clarkson professor wins prestigious grant to study polarization in social media

Clarkson professor wins prestigious grant to study polarization in social media
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