Fig. 3

Comparison of ReHo and fALFF values between MADIs at Stage I and Stage II. MA: methamphetamine; MADIs: MA-dependent individuals; MADIs at Stage I: MADIs when they were abstinent from MA; MADIs at Stage II: MADIs when they relapsed to MA; ReHo: regional homogeneity; fALFF: fractional amplitude of low-frequency fluctuation. The significant differences were set at P < 0.005 (a minimum cluster size of 13 voxels, corrected by the AlphaSim program in REST software).