Evidence map›Paper›PMID 27984542›Full record

Trial reportNeuroreport2017

Transcranial direct current stimulation over the opercular somatosensory region does not influence experimentally induced pain: a triple blind, sham-controlled study.

Soichiro Koyama, Kei Nakagawa, Satoshi Tanaka

Abstract readRandomized Controlled Trial
In one paragraph

Trial report in Neuroreport, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from 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.

2 · The registry

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.

3 · Its place in the literature

Who cites it

4 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
  4. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

3 authors.

Soichiro KoyamaaFaculty of Rehabilitation, School of Health Sciences, Fujita Health University, Toyoake bDepartment of Cerebral Research, Division of Cerebral Integration, National Institute for Physiological Sciences, Okazaki cDivision of Bio-Environmental Adaptation Sciences, Institute of Biomedical and Health Sciences, Hiroshima University, Hiroshima dLaboratory of Psychology, Hamamatsu University School of Medicine, Hamamatsu, Japan.
Kei Nakagawa
Satoshi Tanaka

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Transcranial magnetic stimulation (TMS) over the opercular somatosensory region (OP), which includes the secondary somatosensory cortex and the insular cortex, suppresses pain sensation. However, whether transcranial direct current stimulation (tDCS) over the OP has a similar effect on pain sensation remains unknown. We examined whether pain sensation would be suppressed by tDCS over the OP. Our experiment with a triple-blind, sham-controlled, crossover design involved 12 healthy participants. Participants were asked to rate their subjective pain intensity during and after three types of bihemispheric tDCS: right anodal/left cathodal OP tDCS, left anodal/right cathodal OP tDCS (2 mA, 12 min), and sham tDCS (15 s). Pain stimuli were alternately applied to the dorsum of each index finger using intraepidermal electrical stimulation. We observed no significant effect of tDCS over the OP on the perception of experimentally induced pain. Subjective pain intensity did not differ significantly between the three tDCS conditions. The present null results have crucial implications for the selection of optimal stimulation regions and parameters for clinical pain treatment.

Indexed as

Pain ManagementAdultAnalysis of VarianceCross-Over StudiesDouble-Blind MethodFemaleHumansMalePainPain MeasurementPain ThresholdSomatosensory CortexSurveys and QuestionnairesTranscranial Direct Current StimulationYoung Adult

Identifiers

PMID27984542
PMCPMC5287425

What OpenQuestion holds

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LicenceCC BY-NC-ND
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Registered trials

None linked

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.