High-Frequency Repetitive Transcranial Magnetic Stimulation of The Left Dorsolateral Prefrontal Cortex Reduces Drug Craving and Improves Decision-Making Ability in Methamphetamine Use Disorder

SOURCE: Psychiatry Research. 317:114904, 2022 Nov.

AUTHORS: Wang W; Zhu Y; Wang L; Mu L; Zhu L; Ding D; Ren Z; Yang D; Tang H; Zhang L; Song P; Wei H; Chang L; Wang Z; Ling Q; Gao H; Liu L; Jiao D; Xu H

ABSTRACT: Methamphetamine abuse is escalating worldwide. Its strong and irreversible neurotoxicity generally causes structural and functional changes in the brain. Repetitive transcranial magnetic stimulation (rTMS) as a non-invasive tool can be used to modulate neuronal activity, cortical excitability, and dopaminergic neurotransmission. This study aims to explore the efficacy of high-frequency rTMS in reducing drug craving and increasing decision-making ability for methamphetamine use disorder patients. Sixty-four methamphetamine use disorder patients were randomized to sham rTMS group and 10-Hz rTMS group. Visual analog scale (VAS) and Iowa game test (IGT) were used to evaluate drug craving and cognitive decision-making ability before and after treatment. Before the treatment, the two groups had no differences in the scores of VAS and IGT. After the intervention, VAS scores of 10-Hz rTMS group were significantly lower than that of sham rTMS group. In addition, the two groups had significant differences in the net score of IGT on block 4 and block 5, which favoured the 10-Hz rTMS group. Taken together, the present results suggest that High-frequency rTMS can be used to reduce drug craving and improve decision-making function for methamphetamine use disorder