Evoked and oscillatory EEG activity differentiates language discrimination in young monolingual and bilingual infants

Abstract Language discrimination is one of the core differences between bilingual and monolingual language acquisition. Here, we investigate the earliest brain specialization induced by it. Following previous research, we hypothesize that bilingual native language discrimination is a complex process...

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Autores principales:	Loreto Nacar Garcia, Carlos Guerrero-Mosquera, Marc Colomer, Nuria Sebastian-Galles
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2018
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/1576d96f11a74bb68982f432ebb1e1da
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spelling	oai:doaj.org-article:1576d96f11a74bb68982f432ebb1e1da2021-12-02T15:08:25ZEvoked and oscillatory EEG activity differentiates language discrimination in young monolingual and bilingual infants10.1038/s41598-018-20824-02045-2322https://doaj.org/article/1576d96f11a74bb68982f432ebb1e1da2018-02-01T00:00:00Zhttps://doi.org/10.1038/s41598-018-20824-0https://doaj.org/toc/2045-2322Abstract Language discrimination is one of the core differences between bilingual and monolingual language acquisition. Here, we investigate the earliest brain specialization induced by it. Following previous research, we hypothesize that bilingual native language discrimination is a complex process involving specific processing of the prosodic properties of the speech signal. We recorded the brain activity of monolingual and bilingual 4.5-month-old infants using EEG, while listening to their native/dominant language and two foreign languages. We defined two different windows of analysis to separate discrimination and identification effects. In the early window of analysis (150–280 ms) we measured the P200 component, and in the later window of analysis we measured Theta (400–1800 ms) and Gamma (300–2800 ms) oscillations. The results point in the direction of different language discrimination strategies for bilingual and monolingual infants. While only monolingual infants show early discrimination of their native language based on familiarity, bilinguals perform a later processing which is compatible with an increase in attention to the speech signal. This is the earliest evidence found for brain specialization induced by bilingualism.Loreto Nacar GarciaCarlos Guerrero-MosqueraMarc ColomerNuria Sebastian-GallesNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 8, Iss 1, Pp 1-9 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Loreto Nacar Garcia Carlos Guerrero-Mosquera Marc Colomer Nuria Sebastian-Galles Evoked and oscillatory EEG activity differentiates language discrimination in young monolingual and bilingual infants
description	Abstract Language discrimination is one of the core differences between bilingual and monolingual language acquisition. Here, we investigate the earliest brain specialization induced by it. Following previous research, we hypothesize that bilingual native language discrimination is a complex process involving specific processing of the prosodic properties of the speech signal. We recorded the brain activity of monolingual and bilingual 4.5-month-old infants using EEG, while listening to their native/dominant language and two foreign languages. We defined two different windows of analysis to separate discrimination and identification effects. In the early window of analysis (150–280 ms) we measured the P200 component, and in the later window of analysis we measured Theta (400–1800 ms) and Gamma (300–2800 ms) oscillations. The results point in the direction of different language discrimination strategies for bilingual and monolingual infants. While only monolingual infants show early discrimination of their native language based on familiarity, bilinguals perform a later processing which is compatible with an increase in attention to the speech signal. This is the earliest evidence found for brain specialization induced by bilingualism.
format	article
author	Loreto Nacar Garcia Carlos Guerrero-Mosquera Marc Colomer Nuria Sebastian-Galles
author_facet	Loreto Nacar Garcia Carlos Guerrero-Mosquera Marc Colomer Nuria Sebastian-Galles
author_sort	Loreto Nacar Garcia
title	Evoked and oscillatory EEG activity differentiates language discrimination in young monolingual and bilingual infants
title_short	Evoked and oscillatory EEG activity differentiates language discrimination in young monolingual and bilingual infants
title_full	Evoked and oscillatory EEG activity differentiates language discrimination in young monolingual and bilingual infants
title_fullStr	Evoked and oscillatory EEG activity differentiates language discrimination in young monolingual and bilingual infants
title_full_unstemmed	Evoked and oscillatory EEG activity differentiates language discrimination in young monolingual and bilingual infants
title_sort	evoked and oscillatory eeg activity differentiates language discrimination in young monolingual and bilingual infants
publisher	Nature Portfolio
publishDate	2018
url	https://doaj.org/article/1576d96f11a74bb68982f432ebb1e1da
work_keys_str_mv	AT loretonacargarcia evokedandoscillatoryeegactivitydifferentiateslanguagediscriminationinyoungmonolingualandbilingualinfants AT carlosguerreromosquera evokedandoscillatoryeegactivitydifferentiateslanguagediscriminationinyoungmonolingualandbilingualinfants AT marccolomer evokedandoscillatoryeegactivitydifferentiateslanguagediscriminationinyoungmonolingualandbilingualinfants AT nuriasebastiangalles evokedandoscillatoryeegactivitydifferentiateslanguagediscriminationinyoungmonolingualandbilingualinfants
_version_	1718388106368909312

Evoked and oscillatory EEG activity differentiates language discrimination in young monolingual and bilingual infants

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