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Protocol for Transcranial Direct Current Stimulation for Obsessive-Compulsive Disorder.

Peta E Green1, Andrea Loftus1, Rebecca A Anderson1

  • 1School of Psychology in Faculty of Health Sciences, Curtin University, Kent Street, Bentley, WA 6102, Australia.

Brain Sciences
|December 23, 2020
PubMed
Summary

This study protocol outlines a trial investigating transcranial direct current stimulation (tDCS) for treatment-resistant obsessive-compulsive disorder (OCD). It aims to assess tDCS efficacy using a rigorous double-blind, randomized controlled trial design.

Keywords:
OCDcompulsiveneuromodulationnon-invasive brain stimulationobsessiveprotocolrandomised controlled trialtranscranial direct current stimulation (tDCS)

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Area of Science:

  • Neuroscience
  • Psychiatry
  • Clinical Trials

Background:

  • Obsessive-compulsive disorder (OCD) affects 1-3% of the population.
  • Some OCD cases are resistant to standard treatments like medication and therapy.
  • Non-invasive brain stimulation shows potential but requires more rigorous research.

Purpose of the Study:

  • To present a research protocol for evaluating transcranial direct current stimulation (tDCS) in treatment-resistant OCD.
  • To establish a methodologically sound approach for future tDCS research in OCD.

Main Methods:

  • A double-blind, randomized controlled trial (RCT) comparing active tDCS to sham tDCS.
  • 40 participants with general OCD will receive 10 sessions (20 min each) over 4 weeks.
  • Active tDCS involves 2 mA anodal stimulation over the pre-supplementary motor area (pre-SMA) with cathodal stimulation over the orbitofrontal cortex (OFC).

Main Results:

  • This section details the study protocol and does not contain results.
  • The protocol is designed to rigorously assess treatment efficacy.
  • Outcome measures include OCD severity, depression, anxiety, quality of life, and neurocognitive functions.

Conclusions:

  • The protocol provides a framework for a high-quality RCT on tDCS for treatment-resistant OCD.
  • This research aims to clarify the efficacy of tDCS as a therapeutic option.
  • Findings could inform future clinical practice for managing difficult-to-treat OCD.