Effectiveness of Transcranial Direct Current Stimulation (tDCS) during a Virtual Reality Task in Women with...

Area of Science:

• Neuroscience
• Rehabilitation Medicine
• Human Motor Control

Background:

• Fibromyalgia (FM) is a chronic disorder causing widespread pain, fatigue, and impaired motor function.
• Current treatments for FM often yield limited success in restoring motor performance.
• Investigating novel therapeutic interventions is crucial for managing FM symptoms.

Purpose of the Study:

• To evaluate the efficacy of transcranial direct current stimulation (tDCS) administered during virtual reality (VR) tasks.
• To assess the impact of tDCS-enhanced VR on the motor performance of women diagnosed with fibromyalgia.
• To explore the potential of tDCS to induce neuroplastic changes for sustained motor improvement in FM.

Main Methods:

• A randomized controlled trial involving 21 women with FM (aged 30-50).
• Participants underwent 20 days of VR tasks with either active or sham tDCS, with sequences reversed between groups.
• Motor performance was quantified by the number of hits and absolute/variable errors during VR tasks.

Main Results:

• Active tDCS, particularly when administered first, led to significant improvements in motor performance metrics.
• Enhanced motor function included increased successful hits and reduced absolute and variable errors.
• Observed benefits persisted even after transitioning to sham tDCS, indicating lasting neuroplastic effects.

Conclusions:

• tDCS integrated with VR tasks is an effective method for improving motor performance in women with fibromyalgia.
• The intervention shows particular promise for enhancing complex and extensive movements.
• This approach represents a potentially valuable therapeutic tool for FM rehabilitation due to its neuroplastic effects.