Sibling experience prevents neural tuning to adult faces in 10-month-old infants.
Age bias
ERPs
Face processing
Infancy
Perceptual experiences
Journal
Neuropsychologia
ISSN: 1873-3514
Titre abrégé: Neuropsychologia
Pays: England
ID NLM: 0020713
Informations de publication
Date de publication:
06 2019
06 2019
Historique:
received:
31
07
2018
revised:
07
03
2019
accepted:
18
03
2019
pubmed:
30
3
2019
medline:
26
6
2020
entrez:
30
3
2019
Statut:
ppublish
Résumé
Early facial experience provided by the infant's social environment is known to shape face processing abilities, which narrow during the first year of life towards adult human faces of the most frequently encountered ethnic groups. Here we explored the hypothesis that natural variability in facial input may delay neural commitment to face processing by testing the impact of early natural experience with siblings on infants' brain responses. Event-Related Potentials (ERPs) evoked by upright and inverted adult and child faces were compared in two groups of 10-month-old infants with (N = 21) and without (N = 22) a child sibling. In first-born infants, P1 ERP component showed specificity to upright adult faces that carried over to the subsequent N290 and P400 components. In infants with siblings no inversion effects were observed. Results are discussed in the context of evidence from the language domain, showing that neural commitment to phonetic contrasts emerges later in bilinguals than in monolinguals, and that this delay facilitates subsequent learning of previously unencountered sounds of new languages.
Identifiants
pubmed: 30922829
pii: S0028-3932(18)30417-2
doi: 10.1016/j.neuropsychologia.2019.03.010
pii:
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
72-82Informations de copyright
Copyright © 2019 Elsevier Ltd. All rights reserved.