Lingual protrusion and elevation in lingual dystonia: A hypothesis

Authors

  • Allyson D. Dykstra Doctoral Program in Rehabilitation Sciences, University of Western Ontario, London, Ont., Canada
  • Scott G. Adams School of Communication Sciences and Disorders, University of Western Ontario, London, Ont., Canada
  • Mandar Jog Department of Clinical Neurosciences, University of Western Ontario, London, Ont., Canada

Keywords:

Acoustic arrays, Computer programming, Computer software, Error analysis, Frequency response, Spectroscopic analysis, Speech analysis, Lingual protrusion, Lingual-fractive spectra, Phonetic errors, Time frequency response (TFR)

Abstract

The speech deficits associated with lingual dystonia were analyzed using acoustic analyses. Acoustic analysis focusing on lingual-fractive spectra was conducted using spectrographic displays by the time frequency response (TFR) software program to investigate the hypothesis of abnormal lingual fronting and elevation. A prominent phonetic error was the misperception of the palatial fricative for the alveolar fricative. It was found that a common feature of lingual dystonic contractions involve lingual fronting and lingual elevation during speech production.

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Published

2005-09-01

How to Cite

1.
Dykstra AD, Adams SG, Jog M. Lingual protrusion and elevation in lingual dystonia: A hypothesis. Canadian Acoustics [Internet]. 2005 Sep. 1 [cited 2021 Jul. 24];33(3):98-9. Available from: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/1763

Issue

Section

Proceedings of the Acoustics Week in Canada

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