FIG 4.

The correlations between neurotransmitters and clinical scales of Internet addiction and psychological tests. A, The gm-GABA/Cr is significantly correlated with the Internet Addiction Test (circle and dashed line) and the Smartphone Addiction Scale (x and dotted line) as well as the sum of both scales (square and solid line). B, The gm-GABA/Cr was significantly correlated with the depression scale (circle and dashed line), total anxiety score (x and dotted line), and state anxiety score (square and solid line). C, The gm-Glx/Cr was correlated with insomnia (circle and dashed line) and sleep quality scores (square and solid line). IAT indicates Internet Addiction Test; SAS, Smartphone Addiction Scale; HRSD, Hamilton Rating Scale for Depression; STAI-S, State-Trait Anxiety Inventory to measure state component of anxiety; PSQI, Pittsburgh Sleep Quality Assessment.