Six-month-old infants' perception of structural regularities in speech

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dc.contributor.authorCruz-Pavía, Irene de la
dc.contributor.authorGervain, Judit
dc.date.accessioned2025-06-18T14:56:22Z
dc.date.available2025-06-18T14:56:22Z
dc.date.issued2023-09
dc.date.updated2025-06-18T14:56:22Z
dc.description.abstractIn order to acquire grammar, infants need to extract regularities from the linguistic input. From birth, infants can detect regularities in speech based on identity relations, and show strong neural activation to syllable sequences containing adjacent repetitions of identical syllables (e.g. ABB: mubaba). Meanwhile, newborns' neural responses to sequences of different syllables (e.g. ABC: mubage, i.e. diversity-based relations) do not differ from baseline. However, this latter ability needs to emerge during development, as most linguistic units, such as words, are composed of highly variable sequences. As infants begin to learn their first word forms at 6 months, we hypothesize that the ability to represent sequences of different syllables might become important for them at this age. Using near-infrared spectroscopy (NIRS), we measured 6-month-old infants' brain responses to repetition- and diversity-based sequences in the bilateral temporal, parietal and frontal areas. We found that 6-month-olds discriminated the repetition- and diversity-based structures in frontal and parietal regions, and exhibited equally strong activation to both grammars as compared to baseline. These results show that by 6 months of age, infants encode sequences with diversity-based structures. They thus provide the earliest evidence that prelexical infants represent difference in speech stimuli, which behavioral studies first attest at 11 months of age.en
dc.description.sponsorshipThis research was supported by the Agence Nationale de la Recherche (ANR) [SpeechCode—ANR-15-CE37-0009-01], the ANR's French Investissements d'Avenir – Labex EFL Program [ANR-10-LABX-0083],the European Research Council [Consolidator 773202 ERC-2017-COG‘BabyRhythm’], the ECOS-Sud grant nr. C20S02, the European Union -Next Generation EU - NRRP M6C2 - Investment 2.1 Enhancement and strengthening of biomedical research in the NHS, and the FARE Project [R204MPRHKE] to Judit Gervain, and the Spanish Ministry of Science and Innovation [PID2019-105100RJ-I00 and RYC2021-033951-I], and the Basque Foundation for Science Ikerbasque to Irene de la Cruz-Pavíaen
dc.identifier.citationde la Cruz-Pavía, I., & Gervain, J. (2023). Six-month-old infants' perception of structural regularities in speech. Cognition, 238. https://doi.org/10.1016/J.COGNITION.2023.105526
dc.identifier.doi10.1016/J.COGNITION.2023.105526
dc.identifier.eissn1873-7838
dc.identifier.issn0010-0277
dc.identifier.urihttps://hdl.handle.net/20.500.14454/3089
dc.language.isoeng
dc.publisherElsevier B.V.
dc.rights© 2023 The Authors
dc.subject.otherDiversity-based regularities
dc.subject.otherGrammar
dc.subject.otherNIRS (near-infrared spectroscopy)
dc.subject.otherPrelexical infants
dc.subject.otherRepetition-based regularities
dc.titleSix-month-old infants' perception of structural regularities in speechen
dc.typejournal article
dcterms.accessRightsopen access
oaire.citation.titleCognition
oaire.citation.volume238
oaire.licenseConditionhttps://creativecommons.org/licenses/by-nc-nd/4.0/
oaire.versionVoR
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