Although few studies have used EEG to investigate brain connectivity in IGD patients, a recent study found that adolescents with an Internet addiction exhibit increased gamma coherence compared to healthy control (HC) subjects29. Furthermore, resting-state fMRI studies have consistently identified dysfunctional connectivity in IGD patients30. For example, Wang et al. observed altered interhemispheric resting-state functional connectivity in the bilateral prefrontal lobe in individuals with IGD31. A comparison of intrinsic local connectivity among IGD patients, AUD patients, and HCs using fMRI revealed significant increases in regional homogeneity (ReHo) in the posterior cingulate cortex (PCC) of the IGD and AUD groups as well as decreases in ReHo in the right superior temporal gyrus (STG) of IGD patients compared to AUD patients and HCs32.
