Evidence map›Paper›PMID 31291247›Full record

ArticlePloS one2019

Relating excitatory and inhibitory neurochemicals to visual perception: A magnetic resonance study of occipital cortex between migraine events.

Yu Man Chan, Kabilan Pitchaimuthu, Qi-Zhu Wu, Olivia L Carter, Gary F Egan, David R Badcock, Allison M McKendrick

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed, 1 pooled it
2.6field-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

14 citing papers in PubMed, 1 synthesis or guideline pooled it, 23 citations in OpenAlex.

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  13. Magnetic resonance spectroscopy studies in migraine.Neurobiology of pain (Cambridge, Mass.)
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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

7 authors at 3 institutions in 1 country.

Yu Man ChanDepartment of Optometry & Vision Sciences, The University of Melbourne, Melbourne, Victoria, Australia.ORCID 0000-0002-1793-4673
Kabilan PitchaimuthuDepartment of Optometry & Vision Sciences, The University of Melbourne, Melbourne, Victoria, Australia.
Qi-Zhu WuMonash Biomedical Imaging, Monash University, Melbourne, Victoria, Australia.
Olivia L CarterMelbourne School of Psychological Sciences, University of Melbourne, Melbourne, Victoria, Australia.
Gary F EganMonash Biomedical Imaging, Monash University, Melbourne, Victoria, Australia.
David R BadcockSchool of Psychological Science, University of Western Australia, Perth, Western Australia, Australia.
Allison M McKendrickDepartment of Optometry & Vision Sciences, The University of Melbourne, Melbourne, Victoria, Australia.
The University of Melbourne · AUMonash University · AUThe University of Western Australia · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Certain perceptual measures have been proposed as indirect assays of brain neurochemical status in people with migraine. One such measure is binocular rivalry, however, previous studies have not measured rivalry characteristics and brain neurochemistry together in people with migraine. This study compared spectroscopy-measured levels of GABA and Glx (glutamine and glutamate complex) in visual cortex between 16 people with migraine and 16 non-headache controls, and assessed whether the concentration of these neurochemicals explains, at least partially, inter-individual variability in binocular rivalry perceptual measures. Mean Glx level was significantly reduced in migraineurs relative to controls, whereas mean occipital GABA levels were similar between groups. Neither GABA levels, nor Glx levels correlated with rivalry percept duration. Our results thus suggest that the previously suggested relationship between rivalry percept duration and GABAergic inhibitory neurotransmitter concentration in visual cortex is not strong enough to enable rivalry percept duration to be reliably assumed to be a surrogate for GABA concentration, at least in the context of healthy individuals and those that experience migraine.

Indexed as

AdultCase-Control StudiesFemalegamma-Aminobutyric AcidGlutamic AcidGlutamineHumansMagnetic Resonance ImagingMagnetic Resonance SpectroscopyMaleMiddle AgedMigraine DisordersMigraine with AuraMigraine without AuraNeurotransmitter AgentsVisual Cortexgamma-Aminobutyric AcidGlutamic AcidGlutamineNeurotransmitter Agents

Identifiers

PMID31291247
PMCPMC6619596
OpenAlexW2956848907

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.