psychological data (scores on the BDI-II, BAI, and BIS-11) were controlled in analyses. The meaning of bar scales ranging from −0.5 (blue) to 0.5 (red). Fisher’s Z-transformed scores were used for the EEG data. IGD = Internet gaming disorder; AUD = alcohol use disorder; HC = healthy control; GEE = generalized estimating model; EEG = electroencephalography; IQ = intelligence quotient; BDI-II = Beck Depression Inventory-II; BAI = Beck Anxiety Inventory; and BIS-11 = Barratt Impulsivity Scale-11. Intrahemispheric coherence while controlling for the effects of the psychological characteristics GEE analyses of intrahemispheric coherence while controlling for the effects of the demographic and psychological variables revealed significant group effects in the beta (\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$${x}_{(2)}^{2}=10.165$$\end{document}x(2)2=10.165, P = 0.006) and gamma (\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$${x}_{(2)}^{2}=25.737$$\end{document}x(2)2=25.737, P < 0.001) bands (Table 2). More specifically, the IGD group (M [S.E.M.] = 0.230 [7.995]) showed greater coherence in the gamma band than both the AUD (M [S.E.M] = −0.077 [7.986]; P = 0.005) and HC (M [S.E.M.] = −0.088 [8.015]; P < 0.001) groups. Also, the IGD group (M [S.E.M.] = 0.135 [7.844]) exhibited marginal tendency of greater coherence in the beta band
