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dc.contributor.authorLeong, Victoriaen
dc.contributor.authorByrne, Elizabethen
dc.contributor.authorClackson, Kailien
dc.contributor.authorGeorgieva, Stanimiraen
dc.contributor.authorLam, Sarahen
dc.contributor.authorWass, Samen
dc.date.accessioned2018-06-08T14:21:26Z
dc.date.available2018-06-08T14:21:26Z
dc.date.issued2017-12en
dc.identifier.issn0027-8424
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/276805
dc.description.abstractWhen infants and adults communicate, they exchange social signals of availability and communicative intention such as eye gaze. Previous research indicates that when communication is successful, close temporal dependencies arise between adult speakers’ and listeners’ neural activity. However, it is not known whether similar neural contingencies exist within adult-infant dyads. Here, we used dual-electroencephalography to assess whether direct gaze increases neural coupling between adults and infants during screen-based and live interactions. In Experiment 1 (N=17), infants viewed videos of an adult who was singing nursery rhymes with (a) Direct gaze (looking forward); (b) Indirect gaze (head and eyes averted by 20°); or (c) Direct-Oblique gaze (head averted but eyes orientated forward). In Experiment 2 (N=19), infants viewed the same adult in a live context, singing with Direct or Indirect gaze. Gaze-related changes in adult-infant neural network connectivity were measured using Partial Directed Coherence. Across both experiments, the adult had a significant (Granger)-causal influence on infants’ neural activity, which was stronger during Direct and Direct-Oblique gaze relative to Indirect gaze. During live interactions, infants conversely also influenced the adult more during Direct than Indirect gaze. Furthermore, infants vocalised more frequently during live Direct gaze, and individual infants who vocalized longer also elicited stronger synchronisation from the adult. This is the first demonstration that direct gaze strengthens bi-directional adult-infant neural connectivity during communication. Thus, ostensive social signals could act to bring brains into mutual temporal alignment, creating a joint-networked state that is structured to facilitate information transfer during early communication and learning.
dc.format.mediumPrint-Electronicen
dc.languageengen
dc.publisherNational Academy of Sciences
dc.subjectBrainen
dc.subjectHumansen
dc.subjectLanguageen
dc.subjectNonverbal Communicationen
dc.subjectSpeech Perceptionen
dc.subjectFixation, Ocularen
dc.subjectAdulten
dc.subjectInfanten
dc.subjectFemaleen
dc.subjectMaleen
dc.titleSpeaker gaze increases information coupling between infant and adult brains.en
dc.typeArticle
prism.endingPage13295
prism.issueIdentifier50en
prism.publicationDate2017en
prism.publicationNameProceedings of the National Academy of Sciences of the United States of Americaen
prism.startingPage13290
prism.volume114en
dc.identifier.doi10.17863/CAM.24090
dcterms.dateAccepted2017-11-03en
rioxxterms.versionofrecord10.1073/pnas.1702493114en
rioxxterms.versionAM*
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserveden
rioxxterms.licenseref.startdate2017-12en
dc.contributor.orcidLeong, Victoria Vik [0000-0003-0666-9445]
dc.contributor.orcidWass, Sam [0000-0002-7421-3493]
dc.identifier.eissn1091-6490
rioxxterms.typeJournal Article/Reviewen
pubs.funder-project-idESRC (ES/N006461/1)


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