The purpose of this study was to explore the sex-specific neuroimaging differences involved in IGD. Thirty IGDm, 23 IGDf, 30 HCm and 22 HCf underwent rs-fMRI. ALFF and seed-based FC maps were constructed. A two-factor ANCOVA model was specified using SPM8, with sex and diagnosis as the between-subject factors. When interaction effects occurred, post-hoc pair-wise comparisons were performed using two-sample t-tests within the interaction masks. IGDm and IGDf exhibited different regional and network-level functional changes. Lower ALFF values in the orbit part of SFG showed higher impulsivity in IGDm. The results may lead to improved sex-specific treatment and prevention strategies .
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