Evidence map›Paper›PMID 34290582›Full record

SynthesisFrontiers in neuroscience2021

Effects of Chronic Pain Treatment on Altered Functional and Metabolic Activities in the Brain: A Systematic Review and Meta-Analysis of Functional Neuroimaging Studies.

Dongwon Kim, Younbyoung Chae, Hi-Joon Park, In-Seon Lee

Registry-linked trialOpen access · goldAbstract readSystematic Review
In one paragraph

Synthesis in Frontiers in neuroscience, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT05863494 (Toward Personalized Treatment of Chronic Pain Using Transcranial Direct Current Stimulation Paired With Deep Learning), which is not on this map. Cited by 17 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed, 1 pooled it
2.4field-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.

NCT05863494 naunknown statusnot on this mapstarted 2023, after this paper: background citation

Toward Personalized Treatment of Chronic Pain Using Transcranial Direct Current Stimulation Paired With Deep Learning

TypeinterventionalSponsorUniversity of ArizonaRan2023 to 2023Enrolled40ConditionsChronic PainArmsTranscranial Direct Current Stimulation (tDCS), Transcranial Direct Current Stimulation (tDCS) sham
3 · Its place in the literature

Who cites it

17 citing papers in PubMed, 1 synthesis or guideline pooled it, 29 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Article
  4. Article
  5. Review
  6. Review
  7. Targeting Prefrontal Cortex Dysfunction in Pain.The Journal of pharmacology and experimental therapeutics · 2024
    Review
  8. Review
  9. Review
  10. Article
  11. Article
  12. Review
  13. Review
  14. Article
  15. Article
  16. Article
  17. Review
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

4 authors at 1 institution in 1 country.

Dongwon KimCollege of Korean Medicine, Kyung Hee University, Seoul, South Korea.
Younbyoung ChaeCollege of Korean Medicine, Kyung Hee University, Seoul, South Korea.
Hi-Joon ParkCollege of Korean Medicine, Kyung Hee University, Seoul, South Korea.
In-Seon LeeCollege of Korean Medicine, Kyung Hee University, Seoul, South Korea.
Kyung Hee University · KR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Previous studies have identified altered brain changes in chronic pain patients, however, it remains unclear whether these changes are reversible. We summarized the neural and molecular changes in patients with chronic pain and employed a meta-analysis approach to quantify the changes. We included 75 studies and 11 of these 75 studies were included in the activation likelihood estimation (ALE) analysis. In the 62 functional magnetic resonance imaging (fMRI) studies, the primary somatosensory and motor cortex (SI and MI), thalamus, insula, and anterior cingulate cortex (ACC) showed significantly decreased activity after the treatments compared to baseline. In the 13 positron emission tomography (PET) studies, the SI, MI, thalamus, and insula showed significantly increased glucose uptake, blood flow, and opioid-receptor binding potentials after the treatments compared to baseline. A meta-analysis of fMRI studies in patients with chronic pain, during pain-related tasks, showed a significant deactivation likelihood cluster in the left medial posterior thalamus. Further studies are warranted to understand brain reorganization in patients with chronic pain compared to the normal state, in terms of its relationship with symptom reduction and baseline conditions.

Indexed as

activation likelihood estimationchronic painfunctional neuroimagingmeta-analysissystematic review

Identifiers

PMID34290582
PMCPMC8287208
OpenAlexW3186285311

What OpenQuestion holds

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LicenceCC BY
Read underepoch 390

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.