Evidence map›Paper›PMID 29580963›Full record

ArticleNeuroscience2019

Neurovascular Coupling During Visual Stimulation in Multiple Sclerosis: A MEG-fMRI Study.

Rachael Stickland, Marek Allen, Lorenzo Magazzini, Krish D Singh, Richard G Wise, Valentina Tomassini

Open access · hybridAbstract read
In one paragraph

Article in Neuroscience, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed, 1 pooled it
2.5field-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

20 citing papers in PubMed, 1 synthesis or guideline pooled it, 42 citations in OpenAlex.

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  14. Separating vascular and neuronal effects of age on fMRI BOLD signals.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2021
    Review
  15. Neurovascular Coupling in Development and Disease: Focus on Astrocytes.Frontiers in cell and developmental biology · 2021
    Review
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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

6 authors at 1 institution in 1 country.

Rachael SticklandCardiff University Brain Research Imaging Centre (CUBRIC), Cardiff University School of Psychology, Maindy Road, Cardiff CF24 4HQ, UK.
Marek AllenCardiff University Brain Research Imaging Centre (CUBRIC), Cardiff University School of Psychology, Maindy Road, Cardiff CF24 4HQ, UK.
Lorenzo MagazziniCardiff University Brain Research Imaging Centre (CUBRIC), Cardiff University School of Psychology, Maindy Road, Cardiff CF24 4HQ, UK.
Krish D SinghCardiff University Brain Research Imaging Centre (CUBRIC), Cardiff University School of Psychology, Maindy Road, Cardiff CF24 4HQ, UK.
Richard G WiseCardiff University Brain Research Imaging Centre (CUBRIC), Cardiff University School of Psychology, Maindy Road, Cardiff CF24 4HQ, UK.
Valentina TomassiniCardiff University Brain Research Imaging Centre (CUBRIC), Cardiff University School of Psychology, Maindy Road, Cardiff CF24 4HQ, UK; Institute of Psychological Medicine and Clinical Neurosciences, Cardiff University School of Medicine, University Hospital Wales, Heath Park, CF14 4XN, UK. Electronic address: tomassiniv@cardiff.ac.uk.
Cardiff University · GB

Funding

Medical Research Council MR/L010305/1Wellcome Trust
6 · The paper itself

Abstract

The process of neurovascular coupling ensures that increases in neuronal activity are fed by increases in cerebral blood flow. Evidence suggests that neurovascular coupling may be impaired in Multiple Sclerosis (MS) due to a combination of brain hypoperfusion, altered cerebrovascular reactivity and oxygen metabolism, and altered levels of vasoactive compounds. Here, we tested the hypothesis that neurovascular coupling is impaired in MS. We characterized neurovascular coupling as the relationship between changes in neuronal oscillatory power within the gamma frequency band (30-80 Hz), as measured by magnetoencephalography (MEG), and associated hemodynamic changes (blood oxygenation level dependent, BOLD, and cerebral blood flow, CBF) as measured by functional MRI. We characterized these responses in the visual cortex in 13 MS patients and in 10 matched healthy controls using a reversing checkerboard stimulus at five visual contrasts. There were no significant group differences in visual acuity, P100 latencies, occipital gray matter (GM) volumes and baseline CBF. However, in the MS patients we found a significant reduction in peak gamma power, BOLD and CBF responses. There were no significant differences in neurovascular coupling between groups, in the visual cortex. Our results suggest that neuronal and vascular responses are altered in MS. Gamma power reduction could be an indicator of GM dysfunction, possibly mediated by GABAergic changes. Altered hemodynamic responses confirm previous reports of a vascular dysfunction in MS. Despite altered neuronal and vascular responses, neurovascular coupling appears to be preserved in MS, at least within the range of damage and disability studied here.

Indexed as

AdultBrainEvoked PotentialsFemaleGamma RhythmGray MatterHemodynamicsHumansMagnetic Resonance ImagingMagnetoencephalographyMaleMultimodal ImagingMultiple SclerosisNeurovascular CouplingOrgan SizeOxygenOxygencerebral blood flowfunctional MRImagnetoencephalographyMultiple Sclerosisneurovascular couplingvisual function

Identifiers

PMID29580963
PMCPMC6458991
OpenAlexW2793480470

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.