Evidence map›Paper›PMID 24627432›Full record

ArticleCephalalgia : an international journal of headache2014

Enhanced pain-induced activity of pain-processing regions in a case-control study of episodic migraine.

Todd J Schwedt, Catherine D Chong, Chia-Chun Chiang, Leslie Baxter, Bradley L Schlaggar, David W Dodick

Abstract read
In one paragraph

Article in Cephalalgia : an international journal of headache, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 96 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
96citing papers in PubMed, 3 pooled it
–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

96 citing papers in PubMed, 3 syntheses or guidelines pooled it.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Trial
  5. Trial
  6. Trial
  7. Article
  8. Article
  9. Article
  10. Article
  11. Review
  12. Article
  13. Article
  14. Article
  15. Hallmarks of primary headache: part 1 - migraine.The journal of headache and pain · 2024
    Review
  16. Article
  17. Article
  18. Article
  19. Article
  20. Article

36 more citing papers are in PubMed but not listed here.

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

6 authors.

Todd J SchwedtMayo Clinic, Phoenix, AZ, USA schwedt.todd@mayo.edu.
Catherine D ChongMayo Clinic, Phoenix, AZ, USA.
Chia-Chun ChiangMayo Clinic, Phoenix, AZ, USA.
Leslie BaxterBarrow Neurological Institute, Phoenix, AZ, USA.
Bradley L SchlaggarWashington University School of Medicine, St. Louis, MO, USA.
David W DodickMayo Clinic, Phoenix, AZ, USA.

Funding

Functional Networks in MigraineK23NS070891 · NINDS · WASHINGTON UNIVERSITY · PI SCHWEDT, TODD · 2010 to 2014
$868k
NINDS NIH HHS K23 NS070891NINDS NIH HHS K23NS070891
6 · The paper itself

Abstract

objectiveThe objective of this study was to identify brain regions having aberrant pain-induced activation in migraineurs, thereby gaining insight into particular aspects of pain processing that are atypical in migraineurs.

methodsFunctional magnetic resonance imaging assessed whole brain responses to painful heat in 24 adult episodic migraineurs who were at least 48 hours pain free and 27 healthy controls. Regions differentially activated in migraineurs compared to controls were identified. Activation intensities in these regions were correlated with headache frequency, number of migraine years, and time to next migraine attack.

resultsMigraineurs had greater pain-induced activation of lentiform nucleus, fusiform gyrus, subthalamic nucleus, hippocampus, middle cingulate cortex, premotor cortex, somatosensory cortex, and dorsolateral prefrontal cortex, and less activation in precentral gyrus and superior temporal gyrus. There were significant correlations between activation strength and headache frequency for middle cingulate (r = 0.627, p = 0.001), right dorsolateral prefrontal cortex (r = 0.568, p = 0.004), left fusiform gyrus (r = 0.487, p = 0.016), left precentral gyrus (r = 0.415, p = 0.044), and left hippocampus (r = 0.404, p = 0.050) and with number of migraine years for left fusiform gyrus (r = 0.425, p = 0.038). There were no significant correlations between activation strength and time to next migraine attack.

conclusionsThe majority of regions with enhanced pain-induced activation in headache-free migraineurs participate in cognitive aspects of pain perception such as attending to pain and pain memory. Enhanced cognitive pain processing by migraineurs might reflect cerebral hypersensitivity related to high expectations and hypervigilance for pain.

Indexed as

Brain MappingAdultBrainCase-Control StudiesFemaleHumansImage Processing, Computer-AssistedMagnetic Resonance ImagingMaleMigraine DisordersPaincognitive pain processingfunctional magnetic resonance imagingheadacheMigrainepain

Identifiers

PMID24627432
PMCPMC4163130

What OpenQuestion holds

Textmetadata
LicenceTDM
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.