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Anticipatory Coarticulation and Stab...

Belmont, Alissa J.

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Anticipatory Coarticulation and Stability of Speech in Typically Fluent Speakers and People Who Stutter Across the Lifespan: An Ultrasound Study.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Anticipatory Coarticulation and Stability of Speech in Typically Fluent Speakers and People Who Stutter Across the Lifespan: An Ultrasound Study./
Author:	Belmont, Alissa J.
Description:	60 p.
Notes:	Source: Masters Abstracts International, Volume: 54-06.
Contained By:	Masters Abstracts International54-06(E).
Subject:	Speech therapy. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1595349
ISBN:	9781321942460

Anticipatory Coarticulation and Stability of Speech in Typically Fluent Speakers and People Who Stutter Across the Lifespan: An Ultrasound Study.
Belmont, Alissa J.

Anticipatory Coarticulation and Stability of Speech in Typically Fluent Speakers and People Who Stutter Across the Lifespan: An Ultrasound Study. - 60 p.

Source: Masters Abstracts International, Volume: 54-06.

Thesis (M.S.)--University of South Florida, 2015.

This study uses ultrasound to image onset velar stop consonant articulation in words. By examining tongue body placement, the extent of velar closure variation across vowel contexts provides for the measurement of anticipatory coarticulation while productions within the same vowel context provide measurement of extent of token-to-token variation. Articulate Assistant Advanced 2.0 software was used to semi-automatically generate midsagittal tongue contours at the initial point of maximum velar closure and was used to fit each contour to a curved spline. Patterns of lingual coarticulation and measures of speech motor stability, based on curve-to-curve distance (Zharkova, Hewlett, & Hardcastle, 2011), are investigated to compare the speech of typically fluent speakers to the speech of people who stutter. Anticipatory coarticulation can be interpreted as a quantitative measure indicating the maturity of the speech motor system and its planning abilities. Token-to-token variability is examined from multiple velar vowel productions within the same vowel context, describing the accuracy of control, or stability, of velar closure gestures. Measures for both speaking groups are examined across the lifespan at stages during speech development, maturation, and aging. Results indicate an overall age effect, interpreted as refinement, with increased speech stability and progressively more segmental (less coarticulated) productions across the lifespan. A tendency toward decreased stability and more coarticulated speech was found for younger people who stutter, but this difference was small and absent among older adults. Outcomes of this study suggest the articulatory maturation trajectories of people who stutter may be delayed, but overall maturation of the speech mechanism is evident by older adulthood for typically fluent speakers and those who stutter. Applications to intervention are discussed in closing.

ISBN: 9781321942460Subjects--Topical Terms:

520446
Speech therapy.

Anticipatory Coarticulation and Stability of Speech in Typically Fluent Speakers and People Who Stutter Across the Lifespan: An Ultrasound Study.
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100 1 $a Belmont, Alissa J. $3 3185181
245 1 0 $a Anticipatory Coarticulation and Stability of Speech in Typically Fluent Speakers and People Who Stutter Across the Lifespan: An Ultrasound Study.
300 $a 60 p.
500 $a Source: Masters Abstracts International, Volume: 54-06.
500 $a Advisers: Stefan Frisch; Nathan Maxfield.
502 $a Thesis (M.S.)--University of South Florida, 2015.
520 $a This study uses ultrasound to image onset velar stop consonant articulation in words. By examining tongue body placement, the extent of velar closure variation across vowel contexts provides for the measurement of anticipatory coarticulation while productions within the same vowel context provide measurement of extent of token-to-token variation. Articulate Assistant Advanced 2.0 software was used to semi-automatically generate midsagittal tongue contours at the initial point of maximum velar closure and was used to fit each contour to a curved spline. Patterns of lingual coarticulation and measures of speech motor stability, based on curve-to-curve distance (Zharkova, Hewlett, & Hardcastle, 2011), are investigated to compare the speech of typically fluent speakers to the speech of people who stutter. Anticipatory coarticulation can be interpreted as a quantitative measure indicating the maturity of the speech motor system and its planning abilities. Token-to-token variability is examined from multiple velar vowel productions within the same vowel context, describing the accuracy of control, or stability, of velar closure gestures. Measures for both speaking groups are examined across the lifespan at stages during speech development, maturation, and aging. Results indicate an overall age effect, interpreted as refinement, with increased speech stability and progressively more segmental (less coarticulated) productions across the lifespan. A tendency toward decreased stability and more coarticulated speech was found for younger people who stutter, but this difference was small and absent among older adults. Outcomes of this study suggest the articulatory maturation trajectories of people who stutter may be delayed, but overall maturation of the speech mechanism is evident by older adulthood for typically fluent speakers and those who stutter. Applications to intervention are discussed in closing.
590 $a School code: 0206.
650 4 $a Speech therapy. $3 520446
650 4 $a Medical imaging. $3 3172799
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710 2 $a University of South Florida. $b Communication Sciences and Disorders. $3 1678490
773 0 $t Masters Abstracts International $g 54-06(E).
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793 $a English
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