The neural correlates of orienting to walking direction in 6-month-old infants: An ERP study.
ERPs
biological motion
cortical source analysis
social stimuli
visuospatial orienting
Journal
Developmental science
ISSN: 1467-7687
Titre abrégé: Dev Sci
Pays: England
ID NLM: 9814574
Informations de publication
Date de publication:
11 2019
11 2019
Historique:
received:
29
08
2017
revised:
01
02
2019
accepted:
02
02
2019
pubmed:
12
2
2019
medline:
6
2
2020
entrez:
12
2
2019
Statut:
ppublish
Résumé
The ability to detect social signals represents a first step to enter our social world. Behavioral evidence has demonstrated that 6-month-old infants are able to orient their attention toward the position indicated by walking direction, showing faster orienting responses toward stimuli cued by the direction of motion than toward uncued stimuli. The present study investigated the neural mechanisms underpinning this attentional priming effect by using a spatial cueing paradigm and recording EEG (Geodesic System 128 channels) from 6-month-old infants. Infants were presented with a central point-light walker followed by a single peripheral target. The target appeared randomly at a position either congruent or incongruent with the walking direction of the cue. We examined infants' target-locked event-related potential (ERP) responses and we used cortical source analysis to explore which brain regions gave rise to the ERP responses. The P1 component and saccade latencies toward the peripheral target were modulated by the congruency between the walking direction of the cue and the position of the target. Infants' saccade latencies were faster in response to targets appearing at congruent spatial locations. The P1 component was larger in response to congruent than to incongruent targets and a similar congruency effect was found with cortical source analysis in the parahippocampal gyrus and the anterior fusiform gyrus. Overall, these findings suggest that a type of biological motion like the one of a vertebrate walking on the legs can trigger covert orienting of attention in 6-month-old infants, enabling enhancement of neural activity related to visual processing of potentially relevant information as well as a facilitation of oculomotor responses to stimuli appearing at the attended location.
Identifiants
pubmed: 30740853
doi: 10.1111/desc.12811
pmc: PMC6689458
mid: NIHMS1012589
doi:
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
e12811Subventions
Organisme : NICHD NIH HHS
ID : R01 HD018942
Pays : United States
Organisme : NICHD NIH HHS
ID : R03 HD091464
Pays : United States
Informations de copyright
© 2019 John Wiley & Sons Ltd.
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