Significant differences in axial kurtosis (K
) between IGA and HC subjects. Compared with the control group, the IGA group exhibited lower K// in the right middle occipital gyrus, right anterior lobe of the cerebellum, right precuneus, right insula, bilateral thalamus, right postcentral gyrus, right posterior cingulate cortex, right supplementary motor area, left median cingulate gyrus, and bilateral precentral gyrus (P <0.05, AlphaSim-corrected). T-values are color-coded on the right. Blue indicates IGA group < HC. *The left section of the figure represents the patient’s right side. *HC, healthy control. IGA, internet gaming addiction.