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Published on: June 17, 2013
Spaced Transcranial Direct Current Stimulation for Major Depression
Maxime Couture1, Véronique Desbeaumes Jodoin1, Emma Bousseau1
1Centre Hospitalier de l'Université de Montréal (CHUM) and Centre de Recherche du CHUM (CRCHUM), University of Montreal, Montreal (Couture, Desbeaumes Jodoin, Bousseau, Sarshoghi, Miron, Lespérance); IfADo Leibniz Research Center for Working Environment and Human Factors at TU Dortmund, Germany, and Bielefeld University, University Hospital OWL, Protestant Hospital of Bethel Foundation, University Clinic of Psychiatry and Psychotherapy, and German Center for Mental Health (Nitsche); Temerty Centre for Therapeutic Brain Intervention and Campbell Family Research Institute, Centre for Addiction and Mental Health (CAMH) and Department of Psychiatry, University of Toronto, Toronto (Blumberger); Department of Medicine (Bolduc) and Department of Psychiatry and Addictology (Lespérance, Miron), Faculty of Medicine, University of Montreal, Montreal; Interventional Psychiatry Program, Department of Psychiatry, UC San Diego School of Medicine, San Diego (Weissman, Appelbaum, Daskalakis, Poorganji, Miron).
Spaced transcranial direct current stimulation (tDCS) is a feasible and safe treatment for major depressive disorder, significantly reducing symptoms. Further validation in randomized trials is recommended to confirm these promising findings.
Area of Science:
- Neuroscience
- Psychiatry
- Medical Devices
Background:
- Major depressive disorder (MDD) is a prevalent and debilitating mental health condition.
- Current treatments for MDD have limitations, necessitating the exploration of novel therapeutic approaches.
- Neuromodulation techniques, such as transcranial direct current stimulation (tDCS), offer potential alternative treatment strategies.
Purpose of the Study:
- To investigate the feasibility, safety, and preliminary therapeutic effects of a spaced transcranial direct current stimulation (tDCS) protocol for major depressive disorder (MDD).
- To assess the tolerability and potential efficacy of a 50-session tDCS treatment administered over two weeks in MDD patients.
Main Methods:
- A prospective open-label study enrolled 30 participants diagnosed with major depressive disorder.
- Participants received 50 sessions of tDCS over a 2-week period.
- Feasibility, safety, and tolerability were assessed, alongside depressive symptom severity using the Hamilton Depression Rating Scale (HAM-D-17, HAM-D-6) and Montgomery-Åsberg Depression Rating Scale (MADRS) at baseline and follow-ups.
Main Results:
- The tDCS protocol demonstrated high feasibility, with a 93.3% retention rate and 99.7% adherence.
- No serious adverse events were reported; common side effects included mild tingling, itching, and temporary skin redness.
- Significant reductions in depressive symptoms were observed, with HAM-D-17 scores decreasing from baseline to 1-week and 4-week follow-ups, and similar trends on the MADRS.
Conclusions:
- The investigated spaced tDCS protocol is feasible, safe, and well-tolerated for major depressive disorder.
- The protocol led to significant reductions in depressive symptom severity.
- Future research should include sham-controlled randomized trials and neurophysiological measures to validate findings and explore underlying mechanisms.
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