An evaluation of articulatory working space area in vowel production of adults with Down syndrome

Kate E Bunton, Mark Leddy

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

Many adolescents and adults with Down syndrome have reduced speech intelligibility. Reasons for this reduction may relate to differences in anatomy and physiology, both of which are important for creating an intelligible speech signal. The purpose of this study was to document acoustic vowel space and articulatory working space for two adult speakers with Down syndrome who had reduced speech intelligibility (mean = 56% based on single words). Articulatory data for the tongue were collected using a real-time flesh-point tracking method (i.e. X-ray microbeam). Results show smaller F1-F2 acoustic vowel space area for both speakers with Down syndrome compared with the control speakers. Reduced articulatory working space area and slower movement speed were also found for three of the four tongue points analysed. Although generalizations are limited by the small number of participants, findings warrant further investigation of the underlying articulatory characteristics of speech production for individuals with Down syndrome.

Original languageEnglish (US)
Pages (from-to)321-334
Number of pages14
JournalClinical Linguistics and Phonetics
Volume25
Issue number4
DOIs
StatePublished - Mar 2011

Fingerprint

Down Syndrome
Speech Intelligibility
evaluation
Tongue
Acoustics
acoustics
physiology
Anatomy
X-Rays
adolescent
Evaluation
Vowel Space

Keywords

  • acoustic vowel space
  • Down syndrome
  • speech intelligibility
  • X-ray microbeam

ASJC Scopus subject areas

  • Speech and Hearing
  • Medicine(all)

Cite this

An evaluation of articulatory working space area in vowel production of adults with Down syndrome. / Bunton, Kate E; Leddy, Mark.

In: Clinical Linguistics and Phonetics, Vol. 25, No. 4, 03.2011, p. 321-334.

Research output: Contribution to journalArticle

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