Evidence map›Paper›PMID 24645677›Full record

ArticleBMC neuroscience2014

Association of anxiety with intracortical inhibition and descending pain modulation in chronic myofascial pain syndrome.

Liliane Pinto Vidor, Iraci L S Torres, Liciane Fernandes Medeiros, Jairo Alberto Dussán-Sarria, Letizzia Dall'agnol, Alicia Deitos, Aline Brietzke, Gabriela Laste, Joanna R Rozisky, Felipe Fregni and 1 more

Open access · goldAbstract read
In one paragraph

Article in BMC neuroscience, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 38 papers.

0numbers the graph read from it
0cells of the map it votes in
38citing papers in PubMed
2.6field-weighted citation impact, top 11% of its field
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

38 citing papers in PubMed, 59 citations in OpenAlex.

  1. Trial
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  7. A review of descending pain modulation in humans.Frontiers in pain research (Lausanne, Switzerland) · 2026
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  20. Temporal Summation in Fibromyalgia Patients: Comparing Phasic and Tonic Paradigms.Frontiers in pain research (Lausanne, Switzerland) · 2022
    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

11 authors at 3 institutions in 2 countries.

Liliane Pinto Vidor
Iraci L S TorresPost-Graduate Program in Medical Sciences, School of Medicine, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil. iracitorres@gmail.com.
Liciane Fernandes Medeiros
Jairo Alberto Dussán-Sarria
Letizzia Dall'agnol
Alicia Deitos
Aline Brietzke
Gabriela Laste
Joanna R Rozisky
Felipe Fregni
Wolnei Caumo
Hospital de Clínicas de Porto Alegre · BRUniversidade Federal do Rio Grande do Sul · BRHarvard University · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThis study aimed to answer three questions related to chronic myofascial pain syndrome (MPS): 1) Is the motor cortex excitability, as assessed by transcranial magnetic stimulation parameters (TMS), related to state-trait anxiety? 2) Does anxiety modulate corticospinal excitability changes after evoked pain by Quantitative Sensory Testing (QST)? 3) Does the state-trait anxiety predict the response to pain evoked by QST if simultaneously receiving a heterotopic stimulus [Conditional Pain Modulation (CPM)]? We included females with chronic MPS (n = 47) and healthy controls (n = 11), aged 19 to 65 years. Motor cortex excitability was assessed by TMS, and anxiety was assessed based on the State-Trait Anxiety Inventory. The disability related to pain (DRP) was assessed by the Profile of Chronic Pain scale for the Brazilian population (B:PCP:S), and the psychophysical pain measurements were measured by the QST and CPM.

resultsIn patients, trait-anxiety was positively correlated to intracortical facilitation (ICF) at baseline and after QST evoked pain (β = 0.05 and β = 0.04, respectively) and negatively correlated to the cortical silent period (CSP) (β = -1.17 and β = -1.23, respectively) (P <0.05 for all comparisons). After QST evoked pain, the DRP was positively correlated to ICF (β = 0.02) (P < 0.05). Pain scores during CPM were positively correlated with trait-anxiety when it was concurrently with high DRP (β = 0.39; P = 0.02). Controls' cortical excitability remained unchanged after QST.

conclusionsThese findings suggest that, in chronic MPS, the imbalance between excitatory and inhibitory descending systems of the corticospinal tract is associated with higher trait-anxiety concurrent with higher DRP.

Indexed as

Neural InhibitionPain ThresholdAdultAgedCatastrophizationCerebral CortexChronic PainFemaleHumansMaleMiddle AgedMyofascial Pain SyndromesTranscranial Magnetic Stimulation

Identifiers

PMID24645677
PMCPMC3995110
OpenAlexW2150963104

What OpenQuestion holds

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LicenceCC BY
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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.