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Our meta-analysis reveals that extraversion was linked with resting-state brain activity differences widely distributed across cortical and subcortical regions involved in emotion and behavioral regulation. The meta-regression results suggest an effect of gender on the association between extraversion and neural activity in the right inferior frontal gyrus. Our findings support that extraversion could lead to neural activity changes, which may be correlated with behavioral differences between extraverts and introverts.
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Li et al. (2024) studied this question.
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