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Distinct Cerebral Pathways for Object Identity and Number in Human Infants

All humans, regardless of their culture and education, possess an intuitive understanding of number. Behavioural evidence suggests that numerical competence may be present early on in infancy. Here, we present brain-imaging evidence for distinct cerebral coding of number and object identity in 3-mo-...

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Detalles Bibliográficos
Autores principales: Izard, Véronique, Dehaene-Lambertz, Ghislaine, Dehaene, Stanislas
Formato: Texto
Lenguaje:English
Publicado: Public Library of Science 2008
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2225438/
https://www.ncbi.nlm.nih.gov/pubmed/18254657
http://dx.doi.org/10.1371/journal.pbio.0060011
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author Izard, Véronique
Dehaene-Lambertz, Ghislaine
Dehaene, Stanislas
author_facet Izard, Véronique
Dehaene-Lambertz, Ghislaine
Dehaene, Stanislas
author_sort Izard, Véronique
collection PubMed
description All humans, regardless of their culture and education, possess an intuitive understanding of number. Behavioural evidence suggests that numerical competence may be present early on in infancy. Here, we present brain-imaging evidence for distinct cerebral coding of number and object identity in 3-mo-old infants. We compared the visual event-related potentials evoked by unforeseen changes either in the identity of objects forming a set, or in the cardinal of this set. In adults and 4-y-old children, number sense relies on a dorsal system of bilateral intraparietal areas, different from the ventral occipitotemporal system sensitive to object identity. Scalp voltage topographies and cortical source modelling revealed a similar distinction in 3-mo-olds, with changes in object identity activating ventral temporal areas, whereas changes in number involved an additional right parietoprefrontal network. These results underscore the developmental continuity of number sense by pointing to early functional biases in brain organization that may channel subsequent learning to restricted brain areas.
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spelling pubmed-22254382008-02-05 Distinct Cerebral Pathways for Object Identity and Number in Human Infants Izard, Véronique Dehaene-Lambertz, Ghislaine Dehaene, Stanislas PLoS Biol Research Article All humans, regardless of their culture and education, possess an intuitive understanding of number. Behavioural evidence suggests that numerical competence may be present early on in infancy. Here, we present brain-imaging evidence for distinct cerebral coding of number and object identity in 3-mo-old infants. We compared the visual event-related potentials evoked by unforeseen changes either in the identity of objects forming a set, or in the cardinal of this set. In adults and 4-y-old children, number sense relies on a dorsal system of bilateral intraparietal areas, different from the ventral occipitotemporal system sensitive to object identity. Scalp voltage topographies and cortical source modelling revealed a similar distinction in 3-mo-olds, with changes in object identity activating ventral temporal areas, whereas changes in number involved an additional right parietoprefrontal network. These results underscore the developmental continuity of number sense by pointing to early functional biases in brain organization that may channel subsequent learning to restricted brain areas. Public Library of Science 2008-02 2008-02-05 /pmc/articles/PMC2225438/ /pubmed/18254657 http://dx.doi.org/10.1371/journal.pbio.0060011 Text en © 2008 Izard et al. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.
spellingShingle Research Article
Izard, Véronique
Dehaene-Lambertz, Ghislaine
Dehaene, Stanislas
Distinct Cerebral Pathways for Object Identity and Number in Human Infants
title Distinct Cerebral Pathways for Object Identity and Number in Human Infants
title_full Distinct Cerebral Pathways for Object Identity and Number in Human Infants
title_fullStr Distinct Cerebral Pathways for Object Identity and Number in Human Infants
title_full_unstemmed Distinct Cerebral Pathways for Object Identity and Number in Human Infants
title_short Distinct Cerebral Pathways for Object Identity and Number in Human Infants
title_sort distinct cerebral pathways for object identity and number in human infants
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2225438/
https://www.ncbi.nlm.nih.gov/pubmed/18254657
http://dx.doi.org/10.1371/journal.pbio.0060011
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