Major Depressive Disorder Clinical Trial
Official title:
The Study of Effectiveness of Unilateral and Bilateral Repetitive Transcranial Magnetic Stimulation (rTMS) on Rumination and Anhedonia in Patients With Major Depressive Disorder
Rumination is significantly frequent in major depressive disorder. However, not a lot of studies have investigated the effects of repetitive transcranial magnetic stimulation on rumination and its electrophysiological correlates. This study recruited 61 participants who were randomly assigned to sham, bilateral, or unilateral stimulation groups to investigate the potential differences between these stimulation protocols and changes in the behavioral and electrophysiological outcomes after treatment.
This study aims to compare the effect of unilateral and bilateral rTMS on the reduction of rumination and anhedonia and their associated neural networks. In a randomized double-blind trial, 65 patients with depressive disorder in Atieh Clinical Neuroscience Center are assigned to three groups. The first group receives bilateral rTMS for 20 sessions on right and left DLPFC; the second group receives unilateral rTMS for 20 sessions on LDLPFC; third group receives sham rTMS for 10 sessions. In this group, the stimulation parameters are similar to that in the actual rTMS group, except that the coil angel is 90° and perpendicular to the head. Rumination and anhedonia symptoms will be measured by the Ruminative Responses Scale (RRS) and Snaith-Hamilton Pleasure Scale (SHAPS) in the baseline and after the 20th session. In order to investigate the neural networks associated with rumination and anhedonia, EEG of patients will be recorded at the first session and at the end of the treatment. ;
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