Evidence map›Paper›PMID 34985602›Full record

ArticleBrain structure & function2022

The effects of bilingualism on hippocampal volume in ageing bilinguals.

Toms Voits, Holly Robson, Jason Rothman, Christos Pliatsikas

Abstract read
In one paragraph

Article in Brain structure & function, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
–field-weighted citation impact
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

12 citing papers in PubMed.

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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.

Toms VoitsDepartment of Language and Culture, UiT the Arctic University of Norway, Hansine Hansens veg 18, 9019, Tromsø, Norway. toms.voits@uit.no.ORCID http://orcid.org/0000-0001-7223-8446
Holly RobsonDepartment of Psychology and Language Sciences, University College London, Chandler House, 2 Wakefield Street, London, WC1N 1PF, UK.ORCID http://orcid.org/0000-0002-5391-0046
Jason RothmanDepartment of Language and Culture, UiT the Arctic University of Norway, Hansine Hansens veg 18, 9019, Tromsø, Norway.
Christos PliatsikasCentro de Investigación Nebrija en Cognición, Universidad Nebrija, Calle de Sta. Cruz de Marcenado, 27, 28015, Madrid, Spain.ORCID http://orcid.org/0000-0001-7093-1773

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Long-term management of more than one language has been argued to contribute to changes in brain and cognition. This has been particularly well documented in older age, where bilingualism has been linked to protective effects against neurocognitive decline. Since memory difficulties are key aspects of this decline, herein we examine potential effects of bilingualism on the hippocampus, a brain structure related to memory that is particularly vulnerable to cognitive ageing. Hippocampal volume has been shown to increase as a result of second language learning and use in younger adults. However, it is unknown if this is maintained throughout the lifespan. We examine hippocampal volume and episodic memory performance in a participant sample consisting of healthy older individuals with a wide range of experiences in exposure and using a second language. Results reveal greater hippocampal volume calibrated to degree of quantified dual language use. Our results mirror those of immersive active bilingualism in younger populations, suggesting that long-term active bilingualism leads to neuroprotective effects in the hippocampus. We discuss this in the context of literature proposing bilingualism-induced brain reserve in the older age.

Indexed as

Cognitive ReserveMultilingualismAdultAgingCognitionHippocampusHumansAgeingBilingualismExperience-based neuroplasticityHippocampusMemoryStructural MRI

Identifiers

PMID34985602
PMCPMC8930894

What OpenQuestion holds

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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.