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The article you requested is

A Randomized Controlled Study of Sequentially Applied Repetitive Transcranial Magnetic Stimulation in Obsessive-Compulsive Disorder

J Clin Psychiatry 2009;70(12):1645-1651
10.4088/JCP.08m04500
Copyright 2009 Physicians Postgraduate Press, Inc.

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Objective: The present study investigated possible therapeutic effects and safety of sequentially combined low-frequency repetitive transcranial magnetic stimulation (rTMS) to the right dorsolateral prefrontal cortex and supplementary motor area in patients with treatment-resistant obsessive-compulsive disorder.

Method: Between February 2007 and January 2008, we carried out a study with a rater-blinded, sham-controlled design in which 20 patients with treatment-resistant obsessive-compulsive disorder, confirmed by a psychiatrist after use of the Structured Clinical Interview for DSM-IV Axis I Disorders-Clinician Version, were randomly assigned to either active rTMS (n=10) or sham treatment (n=10). Over 10 days, rTMS of 1 Hz was given at 110% of the motor threshold for 20 minutes over the right dorsolateral prefrontal cortex and sequentially at 1 Hz at 100% of the motor threshold for 20 minutes over the supplementary motor area. The primary outcome measure was the Yale-Brown Obsessive Compulsive Scale (YBOCS) score.

Results: For the between-group analyses, there were no significant differences over 4 weeks between the active and sham groups on the YBOCS (F=0.01, P=.92) and the Montgomery-Asberg Depression Rating Scale (MADRS; F=0.39, P=.54). In repeated-measures analyses on all subjects, there was a significant effect of time on the YBOCS (F=5.48, P=.009) and the MADRS (F=6.55, P=.004). There were no significant group-by-time interactions for the YBOCS (F=0.03, P=.94) or the MADRS (F=0.09, P=.67).

Conclusions: These findings suggest that 10 sessions of sequential rTMS of the right dorsolateral prefrontal cortex and the supplementary motor area at low frequency had no therapeutic effect on obsessive-compulsive symptoms. However, rTMS was a safe method of treatment, and there was no significant change in cognitive function after rTMS. Further controlled studies using a more sophisticated sham system in larger samples are required to confirm the effect of rTMS in obsessive-compulsive disorder.

Trial Registration: clinicaltrials.gov Identifier: NCT00932204


Submitted: June 28, 2008; accepted November 3, 2008.

Online ahead of print: August 25, 2009.

Corresponding author: Se Joo Kim, MD, Department of Psychiatry and Institute of Behavioral Science in Medicine, Yonsei University College of Medicine, 134 Sinchon-dong, Seodaemun-gu, Seoul 120-752, Republic of Korea (kimsejoo@yuhs.ac).