Difference of neural activity change in 16 Hz during the Cyberball game comparing exclusion versus inclusion conditions in the rifaximin group. Regions of the bilateral inferior, superior, and middle frontal cortex; the bilateral anterior, middle, and posterior cingulate gyrus; and the bilateral parietal and postcentral cortex showed a reduced neural activity change in beta-1 band (16 Hz) comparing exclusion versus inclusion conditions, p < 0.002