Spectral measures of the effects of Friedreich's ataxia on speech

Rosen, Kristin M., Folker, Joanne E., Murdoch, Bruce E., Vogel, Adam P., Cahill, Louise M., Delatycki, Martin B. and Corben, Lousie A. (2011) Spectral measures of the effects of Friedreich's ataxia on speech. International Journal of Speech-Language Pathology, 13 4: 329-334. doi:10.3109/17549507.2011.529940


Author Rosen, Kristin M.
Folker, Joanne E.
Murdoch, Bruce E.
Vogel, Adam P.
Cahill, Louise M.
Delatycki, Martin B.
Corben, Lousie A.
Title Spectral measures of the effects of Friedreich's ataxia on speech
Journal name International Journal of Speech-Language Pathology   Check publisher's open access policy
ISSN 1754-9507
1754-9515
Publication date 2011-08
Year available 2010
Sub-type Article (original research)
DOI 10.3109/17549507.2011.529940
Volume 13
Issue 4
Start page 329
End page 334
Total pages 6
Place of publication Melbourne, Vic., Australia
Publisher Informa Healthcare
Collection year 2011
Language eng
Formatted abstract
This study identifies two measures of the effects of Friedreich's ataxia (FRDA) on speech motor control. Speech samples of 17 healthy controls and 37 speakers with dysarthria associated with FRDA were recorded during one structured and one unstructured speaking task. Two measures of spectral variation were used that relate to the rate and range of changes that occur in the spectral envelope. Linear mixed models revealed significant effects of GROUP, TASK, and GROUP*TASK. FRDA speech samples had slower rate of spectral change and reduced spectral range. Healthy speakers produced faster rates of spectral change in read text compared to conversation, but speakers with dysarthria did not. The results suggest that structured speaking tasks which demand large spectral variation may be particularly useful in assessing the dysarthria. It is concluded that the rate of spectral change is a useful measure of dysarthria associated with FRDA.
Keyword Acoustics
Measurement
Dysarthria
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2011 Collection
School of Health and Rehabilitation Sciences Publications
 
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Created: Fri, 25 Feb 2011, 08:50:09 EST by Kathleen Reinhardt on behalf of School of Health & Rehabilitation Sciences