Evidence map›Paper›PMID 34152089›Full record

ArticleBrain and behavior2021

Atypical resting state functional connectivity in mild traumatic brain injury.

Joelle Amir, Jay Kumar Raghavan Nair, Raquel Del Carpio-O'Donovan, Alain Ptito, Jen-Kai Chen, Jeffrey Chankowsky, Simon Tinawi, Ekaterina Lunkova, Rajeet Singh Saluja

Open access · goldAbstract read
In one paragraph

Article in Brain and behavior, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed, 1 pooled it
2.3field-weighted citation impact, top 12% 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

19 citing papers in PubMed, 1 synthesis or guideline pooled it, 27 citations in OpenAlex.

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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

9 authors at 3 institutions in 2 countries.

Joelle AmirDepartment of Neurology and Neurosurgery, McGill University, Montreal, Quebec, Canada.ORCID 0000-0002-1783-1586
Jay Kumar Raghavan NairDepartment of Radiology, McGill University Health Centre, Montreal, Quebec, Canada.
Raquel Del Carpio-O'DonovanDepartment of Radiology, McGill University Health Centre, Montreal, Quebec, Canada.
Alain PtitoDepartment of Neurology and Neurosurgery, McGill University, Montreal, Quebec, Canada.
Jen-Kai ChenDepartment of Neurology and Neurosurgery, McGill University, Montreal, Quebec, Canada.
Jeffrey ChankowskyDepartment of Radiology, McGill University Health Centre, Montreal, Quebec, Canada.
Simon TinawiDepartment of Rehabilitation Medicine, McGill University Health Centre, Montreal, Quebec, Canada.
Ekaterina LunkovaDepartment of Neurology and Neurosurgery, McGill University, Montreal, Quebec, Canada.
Rajeet Singh SalujaDepartment of Radiology, McGill University Health Centre, Montreal, Quebec, Canada.
McGill University Health Centre · CAMcGill University · CAZero to Three · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesThis study aimed to investigate changes in three intrinsic functional connectivity networks (IFCNs; default mode network [DMN], salience network [SN], and task-positive network [TPN]) in individuals who had sustained a mild traumatic brain injury (mTBI).

methodsResting-state functional magnetic resonance imaging (rs-fMRI) data were acquired from 27 mTBI patients with persistent postconcussive symptoms, along with 26 age- and sex-matched controls. These individuals were recruited from a Level-1 trauma center, at least 3 months after a traumatic episode. IFCNs were established based on seed-to-voxel, region-of-interest (ROI) to ROI, and independent component analyses (ICA). Subsequently, we analyzed the relationship between functional connectivity and postconcussive symptoms.

resultsSeed-to-voxel analysis of rs-fMRI demonstrated decreased functional connectivity in the right lateral parietal lobe, part of the DMN, and increased functional connectivity in the supramarginal gyrus, part of the SN. Our TPN showed both hypo- and hyperconnectivity dependent on seed location. Within network hypoconnectivity was observed in the visual network also using group comparison. Using an ICA, we identified altered network functional connectivity in regions within four IFCNs (sensorimotor, visual, DMN, and dorsal attentional). A significant negative correlation between dorsal attentional network connectivity and behavioral symptoms score was also found.

conclusionsOur findings indicate that rs-fMRI may be of use clinically in order to assess disrupted functional connectivity among IFCNs in mTBI patients. Improved mTBI diagnostic and prognostic information could be especially relevant for athletes looking to safely return to play, as well for individuals from the general population with persistent postconcussive symptoms months after injury, who hope to resume activity.

Indexed as

Brain ConcussionBrainBrain MappingHumansMagnetic Resonance ImagingNerve NetParietal Lobefunctional magnetic resonance imagingintrinsic functional connectivity networksmild traumatic brain injurypostconcussive symptomsresting state

Identifiers

PMID34152089
PMCPMC8413771
OpenAlexW3176557890

What OpenQuestion holds

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LicenceCC BY
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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.