Can bilingualism increase neuroplasticity of language networks in epilepsy?

Brain Mapping Epilepsy, Temporal Lobe / surgery Humans Language Multilingualism Neuronal Plasticity
Bilingualism Functional magnetic resonance imaging (fMRI) Language lateralization Laterality Neuroplasticity Temporal lobe epilepsy

Journal

Epilepsy research
ISSN: 1872-6844
Titre abrégé: Epilepsy Res
Pays: Netherlands
ID NLM: 8703089

Informations de publication

Date de publication:
05 2022
Historique:
received: 21 10 2021
revised: 17 01 2022
accepted: 22 02 2022
pubmed: 13 3 2022
medline: 29 4 2022
entrez: 12 3 2022
Statut: ppublish

Résumé

Individuals with left temporal lobe epilepsy (TLE) have a higher rate of atypical (i.e., bilateral or right hemisphere) language lateralization compared to healthy controls. In addition, bilinguals have been observed to have a less left-lateralized pattern of language representation. We examined the combined influence of bilingual language experience and side of seizure focus on language lateralization profiles in TLE to determine whether bilingualism promotes re-organization of language networks. Seventy-two monolingual speakers of English (21 left TLE; LTLE, 22 right TLE; RTLE, 29 age-matched healthy controls; HC) and 24 English-dominant bilinguals (6 LTLE, 7 RTLE, 11 HC) completed a lexical-semantic functional MRI task and standardized measures of language in English. Language lateralization was determined using laterality indices based on activations in left vs right homologous perisylvian regions-of-interest (ROIs). In a fronto-temporal ROI, LTLE showed the expected pattern of weaker left language lateralization relative to HC, and monolinguals showed a trend of weaker left language lateralization relative to bilinguals. Importantly, these effects were qualified by a significant group by language status interaction, revealing that bilinguals with LTLE had greater rightward language lateralization relative to monolingual LTLE, with a large effect size particularly in the lateral temporal region. Rightward language lateralization was associated with better language scores in bilingual LTLE. These preliminary findings suggest a combined effect of bilingual language experience and a left hemisphere neurologic insult, which may together increase the likelihood of language re-organization to the right hemisphere. Our data underscore the need to consider bilingualism as an important factor contributing to language laterality in patients with TLE. Bilingualism may be neuroprotective pre-surgically and may mitigate post-surgical language decline following left anterior temporal lobectomy, which will be important to test in larger samples.

Identifiants

DOI: 10.1016/j.eplepsyres.2022.106893 PMID: 35278806 PMC: PMC9050932
pubmed: 35278806
pii: S0920-1211(22)00044-4
doi: 10.1016/j.eplepsyres.2022.106893
pmc: PMC9050932
mid: NIHMS1790069
pii:
doi:

Types de publication

Journal Article Research Support, N.I.H., Extramural

Langues

eng

Sous-ensembles de citation

IM

Pagination

106893

Subventions

Organisme : NCATS NIH HHS
ID : UL1 TR001442
Pays : United States
Organisme : NINDS NIH HHS
ID : R01 NS065838
Pays : United States
Organisme : NINDS NIH HHS
ID : R01 NS124585
Pays : United States
Organisme : NINDS NIH HHS
ID : R56 NS065838
Pays : United States
Organisme : NINDS NIH HHS
ID : R01 NS120976
Pays : United States
Organisme : NINDS NIH HHS
ID : F32 NS119285
Pays : United States

Informations de copyright

Copyright © 2022. Published by Elsevier B.V.

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Auteurs

Alena Stasenko (A)

Center for Multimodal Imaging and Genetics, University of California, San Diego, CA, USA; Department of Psychiatry, University of California, San Diego, CA, USA. Electronic address: astasenko@ucsd.edu.

Adam Schadler (A)

Center for Multimodal Imaging and Genetics, University of California, San Diego, CA, USA; Department of Psychiatry, University of California, San Diego, CA, USA.

Erik Kaestner (E)

Center for Multimodal Imaging and Genetics, University of California, San Diego, CA, USA; Department of Psychiatry, University of California, San Diego, CA, USA.

Anny Reyes (A)

Center for Multimodal Imaging and Genetics, University of California, San Diego, CA, USA; Department of Psychiatry, University of California, San Diego, CA, USA; San Diego State University/University of California San Diego Joint Doctoral Program in Clinical Psychology, San Diego, CA, USA.

Mirella Díaz-Santos (M)

Department of Neurology, David Geffen School of Medicine at UCLA, University of California, Los Angeles, CA, USA; Mary S. Easton Center for Alzheimer's Disease Research, University of California, Los Angeles, CA, USA; Department of Psychiatry and Biobehavioral Sciences, David Geffen School of Medicine at UCLA, University of California, Los Angeles, CA, USA.

Monika Połczyńska (M)

Department of Psychiatry and Biobehavioral Sciences, David Geffen School of Medicine at UCLA, University of California, Los Angeles, CA, USA.

Carrie R McDonald (CR)

Center for Multimodal Imaging and Genetics, University of California, San Diego, CA, USA; Department of Psychiatry, University of California, San Diego, CA, USA; San Diego State University/University of California San Diego Joint Doctoral Program in Clinical Psychology, San Diego, CA, USA; Department of Radiation Medicine and Applied Sciences, University of California, San Diego, CA, USA.

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Classifications MeSH

questionsmedicales.fr › Techniques d'investigation › Neuroimagerie › Neuroimagerie fonctionnelle › Cartographie cérébrale › Can bilingualism increase neuroplasticity of...
questionsmedicales.fr › Maladies du système nerveux › Maladies du système nerveux central › Encéphalopathies › Épilepsie › Syndromes épileptiques › Épilepsie temporale › Can bilingualism increase neuroplasticity of...
questionsmedicales.fr › Eucaryotes › Animaux › Chordés › Vertébrés › Mammifères › Eutheria › Primates › Haplorhini › Catarrhini › Hominidae › Humains › Can bilingualism increase neuroplasticity of...
questionsmedicales.fr › Sciences de l'information › Langage › Can bilingualism increase neuroplasticity of...
questionsmedicales.fr › Sciences de l'information › Langage › Arts du langage › Multilinguisme › Can bilingualism increase neuroplasticity of...
questionsmedicales.fr › Phénomènes physiologiques de l'appareil locomoteur et du système nerveux › Phénomènes physiologiques du système nerveux › Plasticité neuronale › Can bilingualism increase neuroplasticity of...