Trial reportScientific reports2020
Comparison of two tDCS protocols on pain and EEG alpha-2 oscillations in women with fibromyalgia.
Trial report in Scientific reports, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers, 5 of them syntheses that pooled it.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
11 citing papers in PubMed, 5 syntheses or guidelines pooled it, 19 citations in OpenAlex.
- Effects of transcranial electrical stimulation on face identification and related perceptual processes: a systematic review.Psychological research · 2026Pooled it
- Combined Use of Electroencephalography and Transcranial Electrical Stimulation: A Systematic Review.Sensors (Basel, Switzerland) · 2025Pooled it
- Clinical, neurophysiological and neurochemical effects of non-invasive electrical brain stimulation in fibromyalgia syndrome-a systematic review and meta-analysis.Frontiers in pain research (Lausanne, Switzerland) · 2025Pooled it
- The effects of transcranial direct-current stimulation (tDCS) on pain intensity of patients with fibromyalgia: a systematic review and meta-analysis.BMC neurology · 2023Pooled it
- The Analgesic Effect of Transcranial Direct Current Stimulation in Fibromyalgia: A Systematic Review, Meta-Analysis, and Meta-Regression of Potential Influencers of Clinical Effect.Neuromodulation : journal of the International Neuromodulation Society · 2023Pooled it
- Comparative Efficacy of Non-invasive Brain Stimulation for Pain, Anxiety, and Depression: A Systematic Review and Network Meta-analysis.Pain and therapy · 2026Review
- Non-Invasive Brain Stimulation for Core Symptoms of Chronic Primary Pain: A Meta-Analysis of RCTs.Brain sciences · 2026Review
- Distinct resting state neural activity in chronic pain patients who respond to transcranial electric stimulation for pain relief.Frontiers in human neuroscience · 2025Article
- Review
- Non-Invasive Electric and Magnetic Brain Stimulation for the Treatment of Fibromyalgia.Biomedicines · 2023Review
- In search of a composite biomarker for chronic pain by way of EEG and machine learning: where do we currently stand?Frontiers in neuroscience · 2023Review
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
5 authors at 2 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Transcranial Direct Current Stimulation (tDCS) has been used as an alternative treatment for pain reduction in fibromyalgia. In this study, in addition to behavioral measures, we analyzed oscillations in alpha 2 frequency band in the frontal, occipital, and parietal regions, in response to the application of two neuromodulation protocols in fibromyalgia. The study was a randomized, double-blind, placebo-controlled clinical trial with 31 women diagnosed with fibromyalgia. The participants were allocated to three groups with the anodic stimulation applied on the left motor cortex: Group 1, for five consecutive days; Group 2, for 10 consecutive days; and Group 3, sham stimulation for five consecutive days. Statistical analysis showed a reduction in pain intensity after treatment for groups in general [F (1.28) = 8.02; p = 0.008; η
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What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.