Transcranial Magnetic Stimulation of Medial Prefrontal and Cingulate Cortices Reduces copyright Self-Administration: A Pilot Study

Transcranial Magnetic Stimulation of Medial Prefrontal and Cingulate Cortices Reduces copyright Self-Administration: A Pilot Study

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BackgroundPrevious studies have shown that repetitive transcranial magnetic stimulation (rTMS) to the dorsolateral prefrontal cortex may serve as a potential treatment for copyright use disorder (CUD), which remains a public health problem that is refractory to treatment.The goal of this pilot study was to investigate the effect of rTMS on copyright self-administration in the laboratory.In the self-administration sessions, CUD participants chose between copyright and an alternative reinforcer (money) in order to directly measure copyright-seeking behavior.The rTMS was delivered with the H7 coil, which provides stimulation to the medial prefrontal cortex (mPFC) and 5 Pc. Sectional anterior cingulate cortex (ACC).These brain regions were targeted based on previous imaging studies demonstrating alterations in their activation and connectivity in CUD.

MethodsVolunteers with CUD were admitted to an inpatient unit for the entire study and assigned to one of three rTMS groups: high frequency (10 Hz), low frequency (1 Hz), and sham.Six participants were included in each group and the rTMS was delivered on weekdays for 3 weeks.The copyright self-administration sessions were performed at three time points: at baseline (pre-TMS, session 1), after 4 days of rTMS (session 2), and after 13 days of rTMS (session 3).During each self-administration session, the outcome measure was the number of choices for copyright.ResultsThe results showed a significant group by time effect (p = 0.

02), where the choices for copyright decreased between sessions 2 Cab Floor Products and 3 in the high frequency group.There was no effect of rTMS on copyright self-administration in the low frequency or sham groups.ConclusionTaken in the context of the existing literature, these results contribute to the data showing that high frequency rTMS to the prefrontal cortex may serve as a potential treatment for CUD.