Fig. 4

Significant between-group differences in functional connectivity of different brain regions with DLPFC between IGD and SND groups. The t-score bars are shown on the left. Red indicates IGD > SND, and blue indicates IGD < SND. Note: The left part of figure represents the participant’s right side, and right represents the participant’s left side. DLPFC dorsolateral prefrontal cortex, IGD internet gaming disorder, SND smokers with nicotine dependence