Electropalatographic Assessment of Tongue-to-Palate Contact Patterns and Variability in Children, Adolescents, and Adults Purpose To investigate the developmental time course of tongue-to-palate contact patterns during speech from childhood to adulthood using electropalatography (EPG) and a comprehensive profile of data analysis. Method Tongue-to-palate contacts were recorded during productions of /t/, /l/, /s/, and /k/ in 48 children, adolescents and adults (aged 6–38 ... Research Article
Research Article  |   April 01, 2007
Electropalatographic Assessment of Tongue-to-Palate Contact Patterns and Variability in Children, Adolescents, and Adults
 
Author Affiliations & Notes
  • Hei Yan Cheng
    University of Queensland, Brisbane, Queensland, Australia
  • Bruce E. Murdoch
    University of Queensland, Brisbane, Queensland, Australia
  • Justine V. Goozée
    University of Queensland, Brisbane, Queensland, Australia
  • Dion Scott
    University of Queensland, Brisbane, Queensland, Australia
  • Contact author: Hei Yan Cheng, Division of Speech Pathology, The University of Queensland, Brisbane, Queensland 4072 Australia. E-mail: y.cheng@shrs.uq.edu.au.
Article Information
Speech, Voice & Prosody / Speech / Research Articles
Research Article   |   April 01, 2007
Electropalatographic Assessment of Tongue-to-Palate Contact Patterns and Variability in Children, Adolescents, and Adults
Journal of Speech, Language, and Hearing Research, April 2007, Vol. 50, 375-392. doi:10.1044/1092-4388(2007/027)
History: Received February 13, 2006 , Accepted August 13, 2006
 
Journal of Speech, Language, and Hearing Research, April 2007, Vol. 50, 375-392. doi:10.1044/1092-4388(2007/027)
History: Received February 13, 2006; Accepted August 13, 2006
Web of Science® Times Cited: 41

Purpose To investigate the developmental time course of tongue-to-palate contact patterns during speech from childhood to adulthood using electropalatography (EPG) and a comprehensive profile of data analysis.

Method Tongue-to-palate contacts were recorded during productions of /t/, /l/, /s/, and /k/ in 48 children, adolescents and adults (aged 6–38 years) using the Reading Electropalatograph system.

Results A protracted course of development for lingual control was indicated, with significant changes occurring until age 11 years; the adolescent period was in turn characterized by continual refinement of articulatory control. With maturity, a reduction in the amount of palatal contact and an anterior shift in the place of articulation was evident during anterior consonant productions, whereas the tongue-back-to-palate contact pattern became more consistent for the velar stop /k/.

Conclusion These results support that maturation of the speech motor system is nonuniform.

Acknowledgment
This work was supported by Research Grant 2002000902 from the Centre of National Research on Disability and Rehabilitation, Herston, Queensland, Australia.
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