Developmental changes in the variability of tongue and lip movements during speech from childhood to adulthood: An EMA study

Murdoch, Bruce E., Cheng, Hei-Yan and Goozee, Justine V. (2012) Developmental changes in the variability of tongue and lip movements during speech from childhood to adulthood: An EMA study. Clinical Linguistics and Phonetics, 26 3: 216-231. doi:10.3109/02699206.2011.604459


Author Murdoch, Bruce E.
Cheng, Hei-Yan
Goozee, Justine V.
Title Developmental changes in the variability of tongue and lip movements during speech from childhood to adulthood: An EMA study
Journal name Clinical Linguistics and Phonetics   Check publisher's open access policy
ISSN 0269-9206
1464-5076
Publication date 2012-03
Year available 2011
Sub-type Article (original research)
DOI 10.3109/02699206.2011.604459
Volume 26
Issue 3
Start page 216
End page 231
Total pages 16
Place of publication London, U.K.
Publisher Informa Healthcare
Collection year 2013
Language eng
Abstract This study investigated the developmental variability of lip and tongue movement in 48 children and adults. Motion of the tongue-tip, tongue-body and lower lip was recorded using electromagnetic articulography during productions of sentences containing /t/, /s/, /l/, /k/ and /p/. Four groups of speakers participated in the study: (1) aged 6–7 years; (2) 8–11 years; (3) 12–17 years; and (4) adults. The variation in distance, duration, speed, acceleration and deceleration of the articulators during single open–close speech movements was analysed, and the stability of multiple movement sequences was examined using the spatiotemporal index. The experimental findings revealed a gradual developmental progression from 6 years to adulthood. At adolescence, speakers continued to exhibit significantly more variable speech motor output compared to adult speakers. The observed developmental pattern suggests that attenuated, but important, changes in the speech motor system occurs from mid-childhood, through adolescence, to adulthood.
Keyword Articulatory movements
Electromagnetic articulography
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Published online 3 October 2011

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2013 Collection
School of Health and Rehabilitation Sciences Publications
 
Versions
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 4 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 6 times in Scopus Article | Citations
Google Scholar Search Google Scholar
Created: Tue, 18 Oct 2011, 10:08:23 EST by Professor Bruce Murdoch on behalf of School of Health & Rehabilitation Sciences