Evidence map›Paper›PMID 32055981›Full record

ArticleBrain structure & function2020

A positive influence of basal ganglia iron concentration on implicit sequence learning.

Jonas Persson, Benjamín Garzón, Rouslan Sitnikov, Lars Bäckman, Grégoria Kalpouzos

Open access · hybridAbstract read
In one paragraph

Article in Brain structure & function, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed
0.8field-weighted citation impact, top 31% 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

6 citing papers in PubMed, 11 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

5 authors at 2 institutions in 1 country.

Jonas PerssonAging Research Center (ARC), Karolinska Institutet and Stockholm University, Tomtebodavägen 18A, 17165, Solna, Sweden. jonas.persson.1@ki.se.ORCID http://orcid.org/0000-0001-9143-3730
Benjamín GarzónAging Research Center (ARC), Karolinska Institutet and Stockholm University, Tomtebodavägen 18A, 17165, Solna, Sweden.
Rouslan SitnikovMRI Research Center, Karolinska University Hospital, Stockholm, Sweden.
Lars BäckmanAging Research Center (ARC), Karolinska Institutet and Stockholm University, Tomtebodavägen 18A, 17165, Solna, Sweden.
Grégoria KalpouzosAging Research Center (ARC), Karolinska Institutet and Stockholm University, Tomtebodavägen 18A, 17165, Solna, Sweden.
Stockholm University · SEKarolinska University Hospital · SE

Funding

Vetenskapsrådet 2014-00940
6 · The paper itself

Abstract

Iron homeostasis is important for maintaining normal physiological brain functioning. In two independent samples, we investigate the link between iron concentration in the basal ganglia (BG) and implicit sequence learning (ISL). In Study 1, we used quantitative susceptibility mapping and task-related fMRI to examine associations among regional iron concentration measurements, brain activation, and ISL in younger and older adults. In Study 2, we examined the link between brain iron and ISL using a metric derived from fMRI in an age-homogenous sample of older adults. Three main findings were obtained. First, BG iron concentration was positively related to ISL in both studies. Second, ISL was robust for both younger and older adults, and performance-related activation was found in fronto-striatal regions across both age groups. Third, BG iron was positively linked to task-related BOLD signal in fronto-striatal regions. This is the first study investigating the relationship among brain iron accumulation, functional brain activation, and ISL, and the results suggest that higher brain iron concentration may be linked to better neurocognitive functioning in this particular task.

Indexed as

AdultAgedBasal GangliaBrain MappingFemaleHumansIronLearningMagnetic Resonance ImagingMalePsychomotor PerformanceIronAgingBasal gangliaBrain ironCaudatefMRIImplicitSequence learning

Identifiers

PMID32055981
PMCPMC7046582
OpenAlexW3006150944

What OpenQuestion holds

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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.