Identifying peripersonal space boundaries in newborns.

Female Humans Infant, Newborn Male Personal Space Physical Stimulation Pilot Projects Reaction Time Sound Space Perception

Journal

Scientific reports
ISSN: 2045-2322
Titre abrégé: Sci Rep
Pays: England
ID NLM: 101563288

Informations de publication

Date de publication:
28 06 2019
Historique:
received: 21 01 2019
accepted: 23 05 2019
entrez: 30 6 2019
pubmed: 30 6 2019
medline: 24 10 2020
Statut: epublish

Résumé

Peripersonal space immediately surrounds the body and can be represented in the brain as a multisensory and sensorimotor interface mediating physical and social interactions between body and environment. Very little consideration has been given to the ontogeny of peripersonal spatial representations in early postnatal life, despite the crucial roles of peripersonal space and its adaptive relevance as the space where infants' earliest interactions take place. Here, we investigated whether peripersonal space could be considered a delimited portion of space with defined boundaries soon after birth. Our findings showed for the first time that newborns' saccadic reaction times to a tactile stimulus simultaneous to sounds with different intensities changed based on the sound intensity. In particular, they were significantly faster when the sound was lounder than a critical intensity, in a pattern that closely resembled that showed by adults. Therefore, provided that sound intensity on its own can cue newborns' sound distance perception, we speculate that this critical distance could be considered the boundary of newborns' rudimentary peripersonal space. Altogether, our findings suggest that soon after birth peripersonal space may be already considered as a bounded portion of space, perhaps instrumental to drive newborns' attention towards events and people within it.

Identifiants

DOI: 10.1038/s41598-019-45084-4 PMID: 31253816 PMC: PMC6598985
pubmed: 31253816
doi: 10.1038/s41598-019-45084-4
pii: 10.1038/s41598-019-45084-4
pmc: PMC6598985
doi:

Types de publication

Journal Article Research Support, Non-U.S. Gov't

Langues

eng

Sous-ensembles de citation

IM

Pagination

9370

Subventions

Organisme : Wellcome Trust
Pays : United Kingdom
Organisme : Wellcome Trust (Wellcome)
ID : 073985/Z/03/Z
Pays : International

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Auteurs

Giulia Orioli (G)

School of Psychology, University of Birmingham, Birmingham, United Kingdom. g.orioli@bham.ac.uk.
Department of Developmental Psychology and Socialization, University of Padova, Padova, Italy. g.orioli@bham.ac.uk.
ORCID: 0000-0003-3333-2389

Alessandro Santoni (A)

Department of Developmental Psychology and Socialization, University of Padova, Padova, Italy.

Danica Dragovic (D)

Paediatric Unit, Hospital of Monfalcone, Monfalcone, GO, Italy.

Teresa Farroni (T)

Department of Developmental Psychology and Socialization, University of Padova, Padova, Italy.

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Classifications MeSH

Recherchemedicale.com › Eucaryotes › Animaux › Chordés › Vertébrés › Mammifères › Eutheria › Primates › Haplorhini › Catarrhini › Hominidae › Humains › Identifying peripersonal space boundaries in newborns.
Recherchemedicale.com › Personnes › Tranches d'âge › Nourrisson › Nouveau-né › Identifying peripersonal space boundaries in newborns.
Recherchemedicale.com › Comportement et mécanismes comportementaux › Comportement › Comportement spatial › Espace personnel › Identifying peripersonal space boundaries in newborns.
Recherchemedicale.com › Techniques d'investigation › Stimulation physique › Identifying peripersonal space boundaries in newborns.
Recherchemedicale.com › Environnement et santé publique › Santé publique › Méthodes épidémiologiques › Caractéristiques des études épidémiologiques › Projets pilotes › Identifying peripersonal space boundaries in newborns.
Recherchemedicale.com › Phénomènes physiologiques de l'appareil locomoteur et du système nerveux › Phénomènes physiologiques du système nerveux › Temps de réaction › Identifying peripersonal space boundaries in newborns.
Recherchemedicale.com › Phénomènes physiques › Rayonnement › Rayonnement non ionisant › Son (physique) › Identifying peripersonal space boundaries in newborns.
Recherchemedicale.com › Phénomènes psychologiques › Processus mentaux › Perception › Perception de l'espace › Identifying peripersonal space boundaries in newborns.