Neural and behavioral signatures of language control in highly proficient bilinguals: Evidence from healthy individuals and brain tumor patients

111 p.

Detalles Bibliográficos
Autor: Timofeeva, Polina
Tipo de recurso: tesis doctoral
Fecha de publicación:2023
País:España
Institución:Universidad del País Vasco
Repositorio:Addi. Archivo Digital para la Docencia y la Investigación
OAI Identifier:oai:addi.ehu.eus:10810/66148
Acceso en línea:http://hdl.handle.net/10810/66148
Access Level:acceso abierto
Palabra clave:human neuro-anatomy
bilinguism
brain function
neuroanatomía humana
bilingüismo
función cerebral
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spelling Neural and behavioral signatures of language control in highly proficient bilinguals: Evidence from healthy individuals and brain tumor patientsTimofeeva, Polinahuman neuro-anatomybilinguismbrain functionneuroanatomía humanabilingüismofunción cerebral111 p.The bilingual population can provide a unique insight into bilingual language processing. One area debated in the literature is how a bilingual brain manages the known languages and what happens when damage occurs. The general aim of this thesis was to further our understanding of bilingual language processing and the functional reorganization that may occur due to external circumstances. This thesis extends previously reported findings on time-frequency MEG components that play an essential role in underpinning neural mechanisms during bilingual switching task. It also compares these findings to patients with brain tumors to better understand the impact of the growing tumor and the neural plasticity mechanisms following tumor resection. In this thesis, I also explore the possibility of a non-invasive ¿virtual lesion¿ approach to replicate some of the cognitive deficits when a tumor is located in one of the known semantic hubs trying to differentiate two networks: one including AG, IFG, and preSMA, and another one - MTG and ATL.Overall, the results suggest that highly proficient bilinguals implement a language-independent mechanism involved in cue-based language selection that enables controlled access to the intended lexico-semantic representation in the ATL, possibly through inhibition of the non-target lexical item and/or disinhibition of the target one.In the brain tumor population, the results suggest that when a tumor compromises areas critical for language processing, 1) it affects different languages differently and 2) to compensate for the processing deficits, bilateral AG and DLPFC take over as the main areas for processing.In the TMS experiment the findings suggest that the left AG is involved in processing bilingual language control, whereas the MTG might not be involved to such degree despite previous findings where both AG and MTG are involved. However, in line with previous evidence, this experiment supports the idea that AG and MTG are not constituting the same network and are functionally dissociable.Carreiras Valiña, Manuel FranciscoAmoruso, Lucía2024202420232023info:eu-repo/semantics/doctoralThesisapplication/pdfhttp://hdl.handle.net/10810/66148reponame:Addi. Archivo Digital para la Docencia y la Investigacióninstname:Universidad del País VascoInglésinfo:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/3.0/es/Atribución 3.0 España(cc)2023 POLINA TIMOFEEVA (cc by 4.0)oai:addi.ehu.eus:10810/661482026-06-18T09:23:17Z
dc.title.none.fl_str_mv Neural and behavioral signatures of language control in highly proficient bilinguals: Evidence from healthy individuals and brain tumor patients
title Neural and behavioral signatures of language control in highly proficient bilinguals: Evidence from healthy individuals and brain tumor patients
spellingShingle Neural and behavioral signatures of language control in highly proficient bilinguals: Evidence from healthy individuals and brain tumor patients
Timofeeva, Polina
human neuro-anatomy
bilinguism
brain function
neuroanatomía humana
bilingüismo
función cerebral
title_short Neural and behavioral signatures of language control in highly proficient bilinguals: Evidence from healthy individuals and brain tumor patients
title_full Neural and behavioral signatures of language control in highly proficient bilinguals: Evidence from healthy individuals and brain tumor patients
title_fullStr Neural and behavioral signatures of language control in highly proficient bilinguals: Evidence from healthy individuals and brain tumor patients
title_full_unstemmed Neural and behavioral signatures of language control in highly proficient bilinguals: Evidence from healthy individuals and brain tumor patients
title_sort Neural and behavioral signatures of language control in highly proficient bilinguals: Evidence from healthy individuals and brain tumor patients
dc.creator.none.fl_str_mv Timofeeva, Polina
author Timofeeva, Polina
author_facet Timofeeva, Polina
author_role author
dc.contributor.none.fl_str_mv Carreiras Valiña, Manuel Francisco
Amoruso, Lucía
dc.subject.none.fl_str_mv human neuro-anatomy
bilinguism
brain function
neuroanatomía humana
bilingüismo
función cerebral
topic human neuro-anatomy
bilinguism
brain function
neuroanatomía humana
bilingüismo
función cerebral
description 111 p.
publishDate 2023
dc.date.none.fl_str_mv 2023
2023
2024
2024
dc.type.none.fl_str_mv info:eu-repo/semantics/doctoralThesis
format doctoralThesis
dc.identifier.none.fl_str_mv http://hdl.handle.net/10810/66148
url http://hdl.handle.net/10810/66148
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/3.0/es/
Atribución 3.0 España
(cc)2023 POLINA TIMOFEEVA (cc by 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by/3.0/es/
Atribución 3.0 España
(cc)2023 POLINA TIMOFEEVA (cc by 4.0)
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:Addi. Archivo Digital para la Docencia y la Investigación
instname:Universidad del País Vasco
instname_str Universidad del País Vasco
reponame_str Addi. Archivo Digital para la Docencia y la Investigación
collection Addi. Archivo Digital para la Docencia y la Investigación
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,300724

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