How bilingualism protects the brain from aging: Insights from bimodal bilinguals

Human Brain Mapping
Le LiGuosheng Ding

Abstract

Bilingual experience can delay cognitive decline during aging. A general hypothesis is that the executive control system of bilinguals faces an increased load due to controlling two languages, and this increased load results in a more "tuned brain" that eventually creates a neural reserve. Here we explored whether such a neuroprotective effect is independent of language modality, i.e., not limited to bilinguals who speak two languages but also occurs for bilinguals who use a spoken and a signed language. We addressed this issue by comparing bimodal bilinguals to monolinguals in order to detect age-induced structural brain changes and to determine whether we can detect the same beneficial effects on brain structure, in terms of preservation of gray matter volume (GMV), for bimodal bilinguals as has been reported for unimodal bilinguals. Our GMV analyses revealed a significant interaction effect of age × group in the bilateral anterior temporal lobes, left hippocampus/amygdala, and left insula where bimodal bilinguals showed slight GMV increases while monolinguals showed significant age-induced GMV decreases. We further found through cortical surface-based measurements that this effect was present for surface area and not for cor...Continue Reading

References

Sep 20, 1991·Science·L R Squire, S Zola-Morgan
Jul 8, 1988·Science·P Rakic
Jan 1, 1985·Journal of Gerontology·N L Bowles, L W Poon
Jun 9, 1998·IEEE Transactions on Medical Imaging·J G SledA C Evans
Jul 14, 1998·Hippocampus·L R Squire, S M Zola
Jun 22, 2000·NeuroImage·J Ashburner, K J Friston
Feb 24, 2001·BJOG : an International Journal of Obstetrics and Gynaecology·S M Kinsella
Dec 18, 2001·Human Brain Mapping·Thomas E Nichols, Andrew P Holmes
Jun 20, 2002·The Journal of Rural Health : Official Journal of the American Rural Health Association and the National Rural Health Care Association·K Kinsella
Feb 15, 2003·IEEE Transactions on Medical Imaging·Alex P ZijdenbosAlan C Evans
Feb 27, 2003·Scandinavian Journal of Psychology·Reza Kormi-NouriLars-Göran Nilsson
Dec 5, 2003·Cerebral Cortex·Bruce FischlAnders M Dale
Apr 1, 2004·Cerebral Cortex·David H SalatBruce Fischl
Apr 8, 2004·Brain and Language·Hermann Ackermann, Axel Riecker
Sep 24, 2004·The Journal of Neuroscience : the Official Journal of the Society for Neuroscience·Elizabeth R SowellArthur W Toga
Oct 16, 2004·Nature·Andrea MechelliCathy J Price
Jun 18, 2005·Neurobiology of Aging·An-Tao DuMichael W Weiner
Mar 15, 2006·Memory & Cognition·Tamar H GollanShaunna K Morris
Jun 10, 2006·Science·J CrinionC J Price
Aug 22, 2006·Neuroscience and Biobehavioral Reviews·Naftali Raz, Karen M Rodrigue
Aug 30, 2006·Journal of Experimental Psychology. Learning, Memory, and Cognition·Albert CostaIva Ivanova
Nov 28, 2006·Neuropsychologia·Ellen BialystokMorris Freedman
Feb 6, 2007·Cognition·Albert CostaNúria Sebastián-Gallés
Sep 1, 2007·NeuroImage·John Ashburner
Sep 28, 2007·IEEE Transactions on Medical Imaging·Hua Li, Anthony Yezzi
Nov 21, 2007·Nature Reviews. Neuroscience·Karalyn PattersonTimothy T Rogers
Dec 7, 2007·Proceedings of the National Academy of Sciences of the United States of America·Gorana PobricMatthew A Lambon Ralph
Jan 22, 2008·Nature·Wolfgang LutzSergei Scherbov

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Citations

Jun 20, 2018·Annals of the New York Academy of Sciences·Marco CalabriaJubin Abutalebi
Jul 22, 2020·Brain Structure & Function·Christos PliatsikasMichael T Ullman
Feb 26, 2021·Neuroscience and Biobehavioral Reviews·Lily TaoQing Cai
Jan 24, 2018·Neuropsychologia·Virgina M BorsaJubin Abutalebi
Jan 6, 2022·Brain Structure & Function·Toms VoitsChristos Pliatsikas

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