Why the study?
People with fibromyalgia show alterations in brain electrical activity and autonomic modulation compared to healthy individuals, but the effects of different tDCS intensities on these parameters were unclear.
Does transcranial direct current stimulation (tDCS) at 1 mA or 2 mA alter brain electrocortical activity and heart rate variability compared to sham in healthy women and women with fibromyalgia?
Population
Healthy women and women with fibromyalgia
Comparison
1 mA tDCS vs 2 mA tDCS vs sham
Design
Randomized crossover trial
Authors
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Alerts clinicians to sympathetic HRV shifts with 1 mA tDCS in FM; extends RCT evidence on intensity- and group-dependent autonomic effects.
Does transcranial direct current stimulation (tDCS) at 1 mA or 2 mA alter brain electrocortical activity and heart rate variability compared to sham in healthy women and women with fibromyalgia?
tDCS over the dorsolateral prefrontal cortex induces intensity- and group-dependent changes in heart rate variability, with more pronounced sympathetic shifts in fibromyalgia patients at 1 mA.
Gómez-Álvaro et al. (2024) studied this question.
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