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Article: Neural networks for short-term memory for order differentiate high and low proficiency bilinguals

TitleNeural networks for short-term memory for order differentiate high and low proficiency bilinguals
Authors
KeywordsReferences (80) View In Table Layout
Issue Date2008
PublisherAcademic Press. The Journal's web site is located at http://www.elsevier.com/locate/ynimg
Citation
Neuroimage, 2008, v. 42 n. 4, p. 1698-1713 How to Cite?
AbstractShort-term memory (STM) for order information, as compared to STM for item information, has been shown to be a critical determinant of language learning capacity. The present fMRI study asked whether the neural substrates of order STM can serve as markers for bilingual language achievement. Two groups of German-French bilinguals differing in second language proficiency were presented STM tasks probing serial order or item information. During order STM but not item STM tasks, the high proficiency group showed increased activation in the lateral orbito-frontal and the superior frontal gyri associated with updating and grouped rehearsal of serial order information. Functional connectivity analyses for order encoding showed a functional network involving the left IPS, the right IPS and the right superior cerebellum in the high proficiency group while the low proficiency group showed enhanced connectivity between the left IPS and bilateral superior temporal and temporo-parietal areas involved in item processing. The present data suggest that low proficiency bilinguals activate STM networks for order in a less efficient and differentiated way, and this may explain their poorer storage and learning capacity for verbal sequences. © 2008 Elsevier Inc.
Persistent Identifierhttp://hdl.handle.net/10722/91970
ISSN
2015 Impact Factor: 5.463
2015 SCImago Journal Rankings: 4.464
ISI Accession Number ID
Funding AgencyGrant Number
Belgian Fund
Flemish Fund
IAP-Phase IVP6/29
Belgian Science Policy department
Ministry for higher education and scientific research of the French-speaking Community, BelgiumARC 06/11-340
Funding Information:

Steve Majerus is a Research Associate, Pierre Maquet is a Research Director and Anne-Lise Leclercq is a Research Fellow, all funded by the Belgian Fund for Scientific Research (F.R.S. FNRS, Belgium). Bert De Smedt is a Postdoctoral researcher funded by the Flemish Fund for Scientific Research (FWO). This study was also supported by an IAP-Phase IV research grant No P6/29 from the Belgian Science Policy department, and a Concerted Research Action ARC 06/11-340 by the Ministry for higher education and scientific research of the French-speaking Community, Belgium.

References

 

DC FieldValueLanguage
dc.contributor.authorMajerus, Sen_HK
dc.contributor.authorBelayachi, Sen_HK
dc.contributor.authorDe Smedt, Ben_HK
dc.contributor.authorLeclercq, ALen_HK
dc.contributor.authorMartinez, Ten_HK
dc.contributor.authorSchmidt, Cen_HK
dc.contributor.authorWeekes, Ben_HK
dc.contributor.authorMaquet, Pen_HK
dc.date.accessioned2010-09-17T10:32:11Z-
dc.date.available2010-09-17T10:32:11Z-
dc.date.issued2008en_HK
dc.identifier.citationNeuroimage, 2008, v. 42 n. 4, p. 1698-1713en_HK
dc.identifier.issn1053-8119en_HK
dc.identifier.urihttp://hdl.handle.net/10722/91970-
dc.description.abstractShort-term memory (STM) for order information, as compared to STM for item information, has been shown to be a critical determinant of language learning capacity. The present fMRI study asked whether the neural substrates of order STM can serve as markers for bilingual language achievement. Two groups of German-French bilinguals differing in second language proficiency were presented STM tasks probing serial order or item information. During order STM but not item STM tasks, the high proficiency group showed increased activation in the lateral orbito-frontal and the superior frontal gyri associated with updating and grouped rehearsal of serial order information. Functional connectivity analyses for order encoding showed a functional network involving the left IPS, the right IPS and the right superior cerebellum in the high proficiency group while the low proficiency group showed enhanced connectivity between the left IPS and bilateral superior temporal and temporo-parietal areas involved in item processing. The present data suggest that low proficiency bilinguals activate STM networks for order in a less efficient and differentiated way, and this may explain their poorer storage and learning capacity for verbal sequences. © 2008 Elsevier Inc.en_HK
dc.languageengen_HK
dc.publisherAcademic Press. The Journal's web site is located at http://www.elsevier.com/locate/ynimgen_HK
dc.relation.ispartofNeuroImageen_HK
dc.subjectReferences (80) View In Table Layouten_HK
dc.titleNeural networks for short-term memory for order differentiate high and low proficiency bilingualsen_HK
dc.typeArticleen_HK
dc.identifier.emailWeekes, B: weekes@hku.hken_HK
dc.identifier.authorityWeekes, B=rp01390en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.neuroimage.2008.06.003en_HK
dc.identifier.pmid18602483-
dc.identifier.scopuseid_2-s2.0-55349144130en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-55349144130&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume42en_HK
dc.identifier.issue4en_HK
dc.identifier.spage1698en_HK
dc.identifier.epage1713en_HK
dc.identifier.eissn1095-9572-
dc.identifier.isiWOS:000259401000042-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridMajerus, S=6603769194en_HK
dc.identifier.scopusauthoridBelayachi, S=24464268100en_HK
dc.identifier.scopusauthoridDe Smedt, B=8359813000en_HK
dc.identifier.scopusauthoridLeclercq, AL=36928449900en_HK
dc.identifier.scopusauthoridMartinez, T=36788973500en_HK
dc.identifier.scopusauthoridSchmidt, C=24473520700en_HK
dc.identifier.scopusauthoridWeekes, B=6701924212en_HK
dc.identifier.scopusauthoridMaquet, P=7006476205en_HK
dc.identifier.citeulike3197368-

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