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Respiratory, laryngeal, and articulatory adjustments to changes in vocal loudness in typically developing children and children with spastic-type cerebral palsy

  • Author / Creator
    Archibald, Erin D
  • This study explored the physiological adjustments made by the speech mechanism when sustained maximum phonations and sentences differing in vocal loudness were produced by typically developing children and children with cerebral palsy (CP). Respiratory adjustments (lung volume initiation, termination and excursions), chest wall muscular amplitude adjustments (intercostal, obliques), vocal fold adjustments (speed quotient), fundamental frequency of selected vowel nuclei and area of mouth opening were calculated. A total of eight children (4 typically developing children, 4 children with CP) were studied. Results indicated that overall typically developing children adjusted lung volume initiation, lung volume excursion, intercostal and oblique muscle activity, speed quotient, fundamental frequency, and area of mouth opening to meet vocal loudness targets. In contrast, children with CP primarily adjusted intercostal and oblique muscle activity, speed quotient, and fundamental frequency to meet vocal loudness targets.

  • Subjects / Keywords
  • Graduation date
    2011-06
  • Type of Item
    Thesis
  • Degree
    Master of Science
  • DOI
    https://doi.org/10.7939/R3M327
  • License
    This thesis is made available by the University of Alberta Libraries with permission of the copyright owner solely for non-commercial purposes. This thesis, or any portion thereof, may not otherwise be copied or reproduced without the written consent of the copyright owner, except to the extent permitted by Canadian copyright law.
  • Language
    English
  • Institution
    University of Alberta
  • Degree level
    Master's
  • Department
    • Department of Speech Pathology and Audiology
  • Supervisor / co-supervisor and their department(s)
    • Boliek, Carol (Speech Pathology & Audiology)
  • Examining committee members and their departments
    • Hodge, Megan (Speech Pathology & Audiology)
    • Tucker, Benjamin (Linguistics)