Neural language networks at birth
Identifieur interne : 000535 ( Main/Merge ); précédent : 000534; suivant : 000536Neural language networks at birth
Auteurs : Daniela Perani [Italie] ; Maria C. Saccuman [Italie] ; Paola Scifo ; Alfred Anwander ; Danilo Spada [Italie] ; Cristina Baldoli ; Antonella Poloniato [Italie] ; Gabriele Lohmann ; Angela D. Friederici [Allemagne]Source :
- Proceedings of the National Academy of Sciences of the United States of America [ 0027-8424 ] ; 2011.
Abstract
The ability to learn language is a human trait. In adults and children, brain imaging studies have shown that auditory language activates a bilateral frontotemporal network with a left hemispheric dominance. It is an open question whether these activations represent the complete neural basis for language present at birth. Here we demonstrate that in 2-d-old infants, the language-related neural substrate is fully active in both hemispheres with a preponderance in the right auditory cortex. Functional and structural connectivities within this neural network, however, are immature, with strong connectivities only between the two hemispheres, contrasting with the adult pattern of prevalent intrahemispheric connectivities. Thus, although the brain responds to spoken language already at birth, thereby providing a strong biological basis to acquire language, progressive maturation of intrahemispheric functional connectivity is yet to be established with language exposure as the brain develops.
Url:
DOI: 10.1073/pnas.1102991108
PubMed: 21896765
PubMed Central: 3179044
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Saccuman</name><affiliation wicri:level="1"><nlm:aff id="aff1">Faculty of Psychology,<institution> Vita-Salute San Raffaele University</institution>, 20132 Milan,<country>Italy</country>;</nlm:aff><country xml:lang="fr">Italie</country><wicri:regionArea># see nlm:aff country strict</wicri:regionArea></affiliation></author><author><name sortKey="Scifo, Paola" sort="Scifo, Paola" uniqKey="Scifo P" first="Paola" last="Scifo">Paola Scifo</name><affiliation><nlm:aff id="aff2">Center of Excellence for High-Field Magnetic Resonance Imaging (CERMAC),</nlm:aff></affiliation><affiliation><nlm:aff id="aff3">Department of Nuclear Medicine, Division of Neuroscience, and Departments of</nlm:aff><wicri:noCountry code="subfield">and Departments of</wicri:noCountry></affiliation></author><author><name sortKey="Anwander, Alfred" sort="Anwander, Alfred" uniqKey="Anwander A" first="Alfred" last="Anwander">Alfred Anwander</name><affiliation><nlm:aff id="aff5">Cortical Network and Cognitive Function Group and Departments of</nlm:aff></affiliation></author><author><name sortKey="Spada, Danilo" sort="Spada, Danilo" uniqKey="Spada D" first="Danilo" last="Spada">Danilo Spada</name><affiliation wicri:level="1"><nlm:aff id="aff1">Faculty of Psychology,<institution> Vita-Salute San Raffaele University</institution>, 20132 Milan,<country>Italy</country>;</nlm:aff><country xml:lang="fr">Italie</country><wicri:regionArea># see nlm:aff country strict</wicri:regionArea></affiliation></author><author><name sortKey="Baldoli, Cristina" sort="Baldoli, Cristina" uniqKey="Baldoli C" first="Cristina" last="Baldoli">Cristina Baldoli</name><affiliation><nlm:aff id="aff2">Center of Excellence for High-Field Magnetic Resonance Imaging (CERMAC),</nlm:aff></affiliation><affiliation><nlm:aff wicri:cut=" and" id="aff7">Neuroradiology</nlm:aff></affiliation></author><author><name sortKey="Poloniato, Antonella" sort="Poloniato, Antonella" uniqKey="Poloniato A" first="Antonella" last="Poloniato">Antonella Poloniato</name><affiliation wicri:level="1"><nlm:aff wicri:cut="; and" id="aff4">Neonatology,<institution>San Raffaele Scientific Institute</institution>, 20132 Milan,<country>Italy</country></nlm:aff><country xml:lang="fr">Italie</country><wicri:regionArea># see nlm:aff country strict</wicri:regionArea></affiliation></author><author><name sortKey="Lohmann, Gabriele" sort="Lohmann, Gabriele" uniqKey="Lohmann G" first="Gabriele" last="Lohmann">Gabriele Lohmann</name><affiliation><nlm:aff wicri:cut=" and" id="aff8">Neurophysics</nlm:aff></affiliation></author><author><name sortKey="Friederici, Angela D" sort="Friederici, Angela D" uniqKey="Friederici A" first="Angela D." last="Friederici">Angela D. Friederici</name><affiliation wicri:level="1"><nlm:aff id="aff6">Neuropsychology,<institution>Max Planck Institute for Human Cognitive and Brain Sciences</institution>, 04103 Leipzig,<country>Germany</country></nlm:aff><country xml:lang="fr">Allemagne</country><wicri:regionArea># see nlm:aff country strict</wicri:regionArea></affiliation></author></analytic><series><title level="j">Proceedings of the National Academy of Sciences of the United States of America</title><idno type="ISSN">0027-8424</idno><idno type="e-ISSN">1091-6490</idno><imprint><date when="2011">2011</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en"><p>The ability to learn language is a human trait. In adults and children, brain imaging studies have shown that auditory language activates a bilateral frontotemporal network with a left hemispheric dominance. It is an open question whether these activations represent the complete neural basis for language present at birth. Here we demonstrate that in 2-d-old infants, the language-related neural substrate is fully active in both hemispheres with a preponderance in the right auditory cortex. Functional and structural connectivities within this neural network, however, are immature, with strong connectivities only between the two hemispheres, contrasting with the adult pattern of prevalent intrahemispheric connectivities. Thus, although the brain responds to spoken language already at birth, thereby providing a strong biological basis to acquire language, progressive maturation of intrahemispheric functional connectivity is yet to be established with language exposure as the brain develops.</p></div></front></TEI></record>Pour manipuler ce document sous Unix (Dilib)
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