Evidence map›Paper›PMID 34493235›Full record

ArticleBMC neurology2021

Altered trigeminothalamic spontaneous low-frequency oscillations in migraine without aura: a resting-state fMRI study.

Ye Eun Kim, Min Kyung Kim, Sang-Il Suh, Ji Hyun Kim

Open access · goldAbstract read
In one paragraph

Article in BMC neurology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed, 3 pooled it
3.5field-weighted citation impact, top 6% 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

15 citing papers in PubMed, 3 syntheses or guidelines pooled it, 24 citations in OpenAlex.

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  3. Aberrant Spontaneous Low-Frequency Brain Activity in Migraine: A Meta-Analysis of Resting-State fMRI Studies.Journal of neuroimaging : official journal of the American Society of Neuroimaging
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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.

Ye Eun KimDepartment of Neurology, Korea University Guro Hospital, Korea University College of Medicine, 152-703, Guro-dong gil 97, Guro-dong, Guro-gu, Seoul, Republic of Korea.
Min Kyung KimDepartment of Neurology, Korea University Guro Hospital, Korea University College of Medicine, 152-703, Guro-dong gil 97, Guro-dong, Guro-gu, Seoul, Republic of Korea.
Sang-Il SuhDepartment of Radiology, Korea University Guro Hospital, Korea University College of Medicine, Seoul, South Korea.
Ji Hyun KimDepartment of Neurology, Korea University Guro Hospital, Korea University College of Medicine, 152-703, Guro-dong gil 97, Guro-dong, Guro-gu, Seoul, Republic of Korea. jhkim.merrf@gmail.com.
Korea University Medical Center · KR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundRecent resting-state fMRI studies demonstrated functional dysconnectivity within the central pain matrix in migraineurs. This study aimed to investigate the spatial distribution and amplitude of low-frequency oscillations (LFOs) using fractional amplitude of low-frequency fluctuation (fALFF) analysis in migraine patients without aura, and to examine relationships between regional LFOs and clinical variables.

methodsResting-state fMRI data were obtained and preprocessed in 44 migraine patients without aura and 31 matched controls. fALFF was computed according to the original method, z-transformed for standardization, and compared between migraineurs and controls. Correlation analysis between regional fALFF and clinical variables was performed in migraineurs as well.

resultsCompared with controls, migraineurs had significant fALFF increases in bilateral ventral posteromedial (VPM) thalamus and brainstem encompassing rostral ventromedial medulla (RVM) and trigeminocervical complex (TCC). Regional fALFF values of bilateral VPM thalamus and brainstem positively correlated with disease duration, but not with migraine attack frequency or Migraine Disability Assessment Scale score.

conclusionsWe have provided evidence for abnormal LFOs in the brainstem including RVM/TCC and thalamic VPM nucleus in migraine without aura, implicating trigeminothalamic network oscillations in migraine pathophysiology. Our results suggest that enhanced LFO activity may underpin the interictal trigeminothalamic dysrhythmia that could contribute to the impairments of pain transmission and modulation in migraine. Given our finding of increasing fALFF in relation to increasing disease duration, the observed trigeminothalamic dysrhythmia may indicate either an inherent pathology leading to migraine headaches or a consequence of repeated attacks on the brain.

Indexed as

EpilepsyMigraine without AuraBrainBrain MappingHumansMagnetic Resonance ImagingThalamusBrainstemFractional amplitude of low-frequency fluctuationLow-frequency oscillationMigraine without auraThalamus

Identifiers

PMID34493235
PMCPMC8422747
OpenAlexW3198860931

What OpenQuestion holds

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LicenceCC BY
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Registered trials

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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.