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    Developmental changes in pharyngeal swallowing acoustics: a comparison of adults and children

    Access Status
    Fulltext not available
    Authors
    Hennessey, Neville
    Fisher, G.
    Ciccone, Natalie
    Date
    2018
    Type
    Journal Article
    
    Metadata
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    Citation
    Hennessey, N. and Fisher, G. and Ciccone, N. 2018. Developmental changes in pharyngeal swallowing acoustics: a comparison of adults and children. Logopedics Phoniatrics Vocology. 43 (2): pp. 63-72.
    Source Title
    Logopedics Phoniatrics Vocology
    DOI
    10.1080/14015439.2017.1326526
    ISSN
    1401-5439
    School
    School of Occ Therapy, Social Work and Speech Path
    URI
    http://hdl.handle.net/20.500.11937/69081
    Collection
    • Curtin Research Publications
    Abstract

    © 2017 Informa UK Limited, trading as Taylor & Francis Group. This study examined developmental differences in the acoustics of pharyngeal swallowing. Thirty-one young children (M = 4.5 years) and 29 adults (M = 22.5 years) were recorded swallowing thin liquid and puree boluses. In comparison with adults, children showed longer total swallow sound duration and duration to peak intensity, as well as greater variability in the duration to peak intensity and mean of the averaged spectrum in Hz. Thin and puree boluses differed in measures of duration, intensity and frequency of the averaged sound spectrum, although these effects did not interact with age. The increased variability in swallowing observed in children paralleled that found in acoustic measures of vowel formants, although speech and swallowing acoustic measures were uncorrelated. Using Formant 2 frequency as a proxy measure of vocal tract length, the age differences in swallowing acoustics appear to be independent of physical size, although associations between duration to peak intensity and pharyngeal size warrant further investigation. These findings suggest acoustic measures of swallowing are sensitive to developmental status, possibly reflecting ongoing refinement of the pharyngeal swallow across childhood, and support continued research into the use of digital cervical auscultation as a tool to assess the efficiency and stability of the swallowing neuromuscular control system in children and adults.

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