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Intelligibility and acoustic charact...

Jeng, Jing-Yi.

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Intelligibility and acoustic characteristics of the dysarthria in Mandarin speakers with cerebral palsy.

Record Type:	Language materials, printed : Monograph/item
Title/Author:	Intelligibility and acoustic characteristics of the dysarthria in Mandarin speakers with cerebral palsy./
Author:	Jeng, Jing-Yi.
Description:	302 p.
Notes:	Source: Dissertation Abstracts International, Volume: 61-05, Section: B, page: 2501.
Contained By:	Dissertation Abstracts International61-05B.
Subject:	Education, Special. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=9972875
ISBN:	059978234X

Intelligibility and acoustic characteristics of the dysarthria in Mandarin speakers with cerebral palsy.
Jeng, Jing-Yi.

Intelligibility and acoustic characteristics of the dysarthria in Mandarin speakers with cerebral palsy. - 302 p.

Source: Dissertation Abstracts International, Volume: 61-05, Section: B, page: 2501.

Thesis (Ph.D.)--The University of Wisconsin - Madison, 2000.

The present study examined two aspects of speech deterioration associated with Mandarin-speaking adults with cerebral palsy (CP): intelligibility evaluation and speech acoustic analyses. Thirty young adults with CP participated in the study (10, spastic; 10, athetoid; 10, mixed). Ten age-matched speakers served as a control group. The speech materials included 78 Mandarin monosyllabic words and 10 sentences. The complete word list incorporated 17 phonetic contrasts (11 initial consonant, five rime, and one tone contrast).

ISBN: 059978234XSubjects--Topical Terms:

606639
Education, Special.

Intelligibility and acoustic characteristics of the dysarthria in Mandarin speakers with cerebral palsy.
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100 1 $a Jeng, Jing-Yi. $3 1250556
245 1 0 $a Intelligibility and acoustic characteristics of the dysarthria in Mandarin speakers with cerebral palsy.
300 $a 302 p.
500 $a Source: Dissertation Abstracts International, Volume: 61-05, Section: B, page: 2501.
500 $a Supervisor: Gary Weismer.
502 $a Thesis (Ph.D.)--The University of Wisconsin - Madison, 2000.
520 $a The present study examined two aspects of speech deterioration associated with Mandarin-speaking adults with cerebral palsy (CP): intelligibility evaluation and speech acoustic analyses. Thirty young adults with CP participated in the study (10, spastic; 10, athetoid; 10, mixed). Ten age-matched speakers served as a control group. The speech materials included 78 Mandarin monosyllabic words and 10 sentences. The complete word list incorporated 17 phonetic contrasts (11 initial consonant, five rime, and one tone contrast).
520 $a The three CP groups had low intelligibility scores across word, transcribed sentence, tDME (transformed direct magnitude estimation) sentence, and tone intelligibility, compared with normal speakers, but no significant differences were found among the CP groups. There were high correlations among word, transcribed sentence and tDME intelligibility.
520 $a CP speakers had more consonant errors than vowels, and the most difficulty with the production of fricatives and affricates. The confusion error profile analysis showed that CP speakers had the highest error rates on C5 (retroflexed/nonretroflexed), C4 (fricatives/affricates) and V4 (alveolar final nasal/null final). The stepwise multiple regression analysis showed that contrast C1 (aspirated/unaspirated stops), C4 and V4 accounted for the majority of variability (74%) in word intelligibility. The spastic group had more manner of articulation confusions (stop/fricative/affricate), while the athetoid group had more consonant omissions. The discriminant analysis showed that 76.7% of the original grouped cases were correctly classified. The multidimensional scaling (MDS) procedure was employed to obtain the phoneme perceptual configuration for groups.
520 $a CP speakers showed reduced contrast on most of the acoustic variables, such as VOT for aspiration, noise duration for fricatives/affricates distinction, M1 for retroflexion, A1 for nasalization, F2 for vowel advancement, F1 for tongue height and vowel space area. The acoustic variables were moderately correlated with intelligibility and confusion contrast variables. The stepwise multiple regression analysis showed that F2 differences and noise duration differences accounted for 63% of the variability in word intelligibility. The speech errors and acoustic contrast reduction conform with a ‘motor simplification principle’ for speech production of CP speakers. Language specific characteristics, such as the density of the phonetic inventory, may mediate the intelligibility evaluation.
590 $a School code: 0262.
650 4 $a Education, Special. $3 606639
650 4 $a Health Sciences, Speech Pathology. $3 1018105
650 4 $a Speech Communication. $3 1017408
690 $a 0459
690 $a 0460
690 $a 0529
710 2 0 $a The University of Wisconsin - Madison. $3 626640
773 0 $t Dissertation Abstracts International $g 61-05B.
790 $a 0262
790 1 0 $a Weismer, Gary, $e advisor
791 $a Ph.D.
792 $a 2000
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=9972875