Dynamics of posterior tongue during pronunciation and voluntary tongue lift movement in young adults

C. Shirahige, Kazuhiro Oki, Y. Morimoto, N. Oisaka, Shougo Minagi

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5 Citations (Scopus)

Abstract

Summary The lifting-up movement of the posterior part of the tongue to touch the palate, which is a requirement for performing physiological functions such as deglutition and speech, is an important phenomenon that is difficult to objectively evaluate. The purpose of this study was to develop a new modality to evaluate the tongue-lifting function, especially in the posterior part of the tongue, and to elucidate the dynamic properties of the tongue in normal subjects. Twenty-three healthy volunteers (9 men and 14 women; mean age, 27·6years) participated in this study. A new device was developed that could evaluate the up-down movement of the posterior part of the tongue in a non-invasive manner. The experimental tasks were as follows: (i) /a/ pronunciation for 1s followed by /ka/ pronunciation (a-ka task), (ii) /a/ pronunciation for 1s followed by /ga/ pronunciation (a-ga task) and (iii) /a/ pronunciation for 1s followed by a voluntary push-up movement of the posterior part of the tongue (a-lift task). Maximum upward velocity in the a-ga task was larger than that in the a-ka task (P

Original languageEnglish
Pages (from-to)370-376
Number of pages7
JournalJournal of Oral Rehabilitation
Volume39
Issue number5
DOIs
Publication statusPublished - May 2012

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Keywords

  • Lingual radix
  • Motility
  • Rehabilitation
  • Swallow
  • Tongue lift

ASJC Scopus subject areas

  • Dentistry(all)

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