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Articulatory movements during vowels...

Yunusova, Yana.

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Articulatory movements during vowels produced by speakers with dysarthria and normal controls.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Articulatory movements during vowels produced by speakers with dysarthria and normal controls./
作者:	Yunusova, Yana.
面頁冊數:	231 p.
附註:	Source: Dissertation Abstracts International, Volume: 66-08, Section: B, page: 4188.
Contained By:	Dissertation Abstracts International66-08B.
標題:	Health Sciences, Speech Pathology. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3186053
ISBN:	054227941X

Articulatory movements during vowels produced by speakers with dysarthria and normal controls.
Yunusova, Yana.

Articulatory movements during vowels produced by speakers with dysarthria and normal controls. - 231 p.

Source: Dissertation Abstracts International, Volume: 66-08, Section: B, page: 4188.

Thesis (Ph.D.)--The University of Wisconsin - Madison, 2005.

A central goal of this study was to create quantitative descriptive kinematic models based on associated movements of the jaw, lower lip, tongue blade and dorsum, for six American English vowels repeated by nineteen normal speakers. A subsequent goal was to compare normal vowel models with models derived from fifteen speakers with dysarthria arising either from Parkinson disease (seven speakers) or amyotrophic lateral sclerosis (eight speakers). Vowel-related movements of articulators were recorded using the x-ray microbeam "fleshpoint-marker" technique, during sentences read aloud at speakers' self-selected habitual rates. Included in these sentences were ten simple words, each containing one of the vowels /i, I, u, a, ae, c/ bearing primary stress. Sagittal-plane marker trajectories during every vowel were represented by articulators' positions at acoustically-defined vowel onset and offset, and at moments between these events when marker speeds were lowest. Key measures in the vowel models included straight-line distances traveled by articulators during the initial and final parts of each vowel, and the absolute and relative durations and average speeds of these movements.

ISBN: 054227941XSubjects--Topical Terms:

1018105
Health Sciences, Speech Pathology.

Articulatory movements during vowels produced by speakers with dysarthria and normal controls.
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245 1 0 $a Articulatory movements during vowels produced by speakers with dysarthria and normal controls.
300 $a 231 p.
500 $a Source: Dissertation Abstracts International, Volume: 66-08, Section: B, page: 4188.
500 $a Supervisors: John Westbury; Gary Weismer.
502 $a Thesis (Ph.D.)--The University of Wisconsin - Madison, 2005.
520 $a A central goal of this study was to create quantitative descriptive kinematic models based on associated movements of the jaw, lower lip, tongue blade and dorsum, for six American English vowels repeated by nineteen normal speakers. A subsequent goal was to compare normal vowel models with models derived from fifteen speakers with dysarthria arising either from Parkinson disease (seven speakers) or amyotrophic lateral sclerosis (eight speakers). Vowel-related movements of articulators were recorded using the x-ray microbeam "fleshpoint-marker" technique, during sentences read aloud at speakers' self-selected habitual rates. Included in these sentences were ten simple words, each containing one of the vowels /i, I, u, a, ae, c/ bearing primary stress. Sagittal-plane marker trajectories during every vowel were represented by articulators' positions at acoustically-defined vowel onset and offset, and at moments between these events when marker speeds were lowest. Key measures in the vowel models included straight-line distances traveled by articulators during the initial and final parts of each vowel, and the absolute and relative durations and average speeds of these movements.
520 $a Results showed that normal vowels could be accurately (but not perfectly) differentiated by movement-based models involving descriptors for multiple articulators from initial and final parts of vowels. Jaw and tongue dorsum movements were broadly more effective in differentiating vowels. Lip and tongue blade movements tended to reflect features of surrounding consonants. Normal vowel models differentiated vowels produced by speakers with Parkinson-based dysarthria about as accurately as for normal speakers, but about 30% less accurately for vowels produced by speakers with amyotrophic lateral sclerosis. Two different approaches were used to investigate patterns of inter-articulator coordination associated with vowels. Statistically different patterns could be identified for different vowels, but no sharp pattern differences could be identified between speaker groups. Examples of vowels involving marked differences from group trends in movement coordination could be identified for specific individuals with dysarthria. However, there was no clear basis for the view that all dysarthric vowels are accompanied by categorically discoordinated movements.
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790 $a 0262
791 $a Ph.D.
792 $a 2005
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