Evidence map›Paper›PMID 33602339›Full record

ArticleAdvances in rheumatology (London, England)2021

Correlating cognition and cortical excitability with pain in fibromyalgia: a case control study.

Vikas Kumar Tiwari, Srishti Nanda, Suvercha Arya, Uma Kumar, Ratna Sharma, Senthil S Kumaran, Renu Bhatia

Open access · diamondAbstract read
PubMed Publisher
In one paragraph

Article in Advances in rheumatology (London, England), 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed
1.4field-weighted citation impact, top 21% 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

6 citing papers in PubMed, 10 citations in OpenAlex.

  1. Effect of neuronavigated repetitive Transcranial Magnetic Stimulation on pain, cognition and cortical excitability in fibromyalgia syndrome.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2024
    Trial
  2. Review
  3. Article
  4. Review
  5. Understanding the Experience and Impacts of Brain Fog in Chronic Pain: A Scoping Review.Canadian journal of pain = Revue canadienne de la douleur · 2023
    Article
  6. 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

7 authors at 1 institution in 1 country.

Vikas Kumar TiwariPain Research and TMS Laboratory, Department of Physiology, All India Institute of Medical Sciences, New Delhi, India.ORCID 0000-0001-5835-3333
Srishti NandaPain Research and TMS Laboratory, Department of Physiology, All India Institute of Medical Sciences, New Delhi, India.ORCID 0000-0003-3901-5181
Suvercha AryaPain Research and TMS Laboratory, Department of Physiology, All India Institute of Medical Sciences, New Delhi, India.
Uma KumarDepartment of Rheumatology, All India Institute of Medical Sciences, New Delhi, India.
Ratna SharmaStress and Cognition Electroimaging Laboratory, Department of Physiology, All India Institute of Medical Sciences, New Delhi, India.
Senthil S KumaranDepartment of Nuclear Magnetic Resonance and MRI Facility, All India Institute of Medical Sciences, New Delhi, India.
Renu BhatiaPain Research and TMS Laboratory, Department of Physiology, All India Institute of Medical Sciences, New Delhi, India. renuaiims28@gmail.com.ORCID 0000-0002-3022-5281
All India Institute of Medical Sciences · IN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundFibromyalgia is a chronic pain disorder characterized by widespread musculoskeletal symptoms, primarily attributed to sensitization of somatosensory system carrying pain. Few reports have investigated the impact of fibromyalgia symptoms on cognition, corticomotor excitability, sleepiness, and the sleep quality - all of which can deteriorate the quality of life in fibromyalgia. However, the existing reports are underpowered and have conflicting directions of findings, limiting their generalizability. Therefore, the present study was designed to compare measures of cognition, corticomotor excitability, sleepiness, and sleep quality using standardized instruments in the recruited patients of fibromyalgia with pain-free controls.

methodsDiagnosed cases of fibromyalgia were recruited from the Rheumatology department for the cross-sectional, case-control study. Cognition (Mini-Mental State Examination, Stroop color-word task), corticomotor excitability (Resting motor threshold, Motor evoked potential amplitude), daytime sleepiness (Epworth sleepiness scale), and sleep quality (Pittsburgh sleep quality index) were studied according to the standard procedure.

resultsThirty-four patients of fibromyalgia and 30 pain-free controls were recruited for the study. Patients of fibromyalgia showed decreased cognitive scores (p = 0.05), lowered accuracy in Stroop color-word task (for color: 0.02, for word: 0.01), and prolonged reaction time (< 0.01, < 0.01). Excessive daytime sleepiness in patients were found (< 0.01) and worsened sleep quality (< 0.01) were found. Parameters of corticomotor excitability were comparable between patients of fibromyalgia and pain-free controls.

conclusionsPatients of fibromyalgia made more errors, had significantly increased reaction time for cognitive tasks, marked daytime sleepiness, and impaired quality of sleep. Future treatment strategies may include cognitive deficits and sleep disturbances as an integral part of fibromyalgia management.

Indexed as

Reaction TimeSleepinessAdultAgedCase-Control StudiesChronic PainCognitionCortical ExcitabilityCross-Sectional StudiesEvoked Potentials, MotorFemaleFibromyalgiaHumansMiddle AgedQuality of LifeSleepCase-Control StudiesChronic PainCognitionCortical ExcitabilityCross-Sectional StudiesEvoked PotentialFibromyalgiaPain MeasurementReaction TimeSleepSleepinessStroop Test

Identifiers

PMID33602339
OpenAlexW3132101281

What OpenQuestion holds

Textmetadata
Read underepoch 390

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.