A Longitudinal study of vowel production in partial glossectomy patients  

Oleh:

Hamlet, S.L. ; Fleming, S.M. ; Patterson, R.L.

Jenis: Article from Journal - ilmiah internasional
Dalam koleksi: Journal of Phonetics vol. 20 no. 2 (Apr. 1992), page 209 - 224.

Ketersediaan

Perpustakaan PKBB Nomor Panggil: 405/JOP/20 Non-tandon: tidak ada Tandon: 1

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Isi artikel

A longitudinal study of vowel production in a group of five partial gIossectomy patients was undertaken. Results based upon vowel formant data revealed that the glossectomy patients were able to compensate for the loss of a portion of the tongue. Over a period of approximately three months following surgery the acoustical vowel distinctions improved, matching those present pre-treatment. Physiological mechanisms for the improvement in vowel formants included a more protruded tongue carriage and greater jaw height, although the latter was not maintained in some subjects after the initial three months. Refinements in phonetic contextual formant patterns did not appear until six months following cancer treatment. In normal subjects, radiographic data showed a higher jaw and more fronted tongue position for vowels in a lingual consonant environment, compared to a labial consonant environment. In gIossectomy patients this pattern for tongue fronting was preserved in the early post-surgery period, but was less pronounced. Data recorded six months following treatment showed some evidence suggesting a shift to differentially greater tongue height as a correlate to higher F2 in a lingual consonant environment.

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