Distinct Cerebral Pathways for Object Identity and Number in Human Infants

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Distinct Cerebral Pathways for Object Identity and Number in Human Infants

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Title: Distinct Cerebral Pathways for Object Identity and Number in Human Infants
Author: Izard, Veronique; Dehaene, Stanislas; Dehaene-Lambertz, Ghislaine

Note: Order does not necessarily reflect citation order of authors.

Citation: Izard Véronique, Dehaene-Lambertz Ghislaine, Dehaene Stanislas. 2008. Distinct cerebral pathways for object identity and number in human infants. PLoS Biol 6(2): e11. doi:10.1371/journal.pbio.0060011
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Abstract: 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.
Published Version: http://dx.doi.org/10.1371/journal.pbio.0060011
Terms of Use: This article is made available under the terms and conditions applicable to Other Posted Material, as set forth at http://nrs.harvard.edu/urn-3:HUL.InstRepos:dash.current.terms-of-use#LAA
Citable link to this page: http://nrs.harvard.edu/urn-3:HUL.InstRepos:2757770

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  • FAS Scholarly Articles [7470]
    Peer reviewed scholarly articles from the Faculty of Arts and Sciences of Harvard University
 
 

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