Sentence Intelligibility and Bizarreness in Cantonese Speakers with Dysarthria

Min Ney Wong, Wing Kei Katy Liu

Research output: Unpublished conference presentation (presented paper, abstract, poster)PosterAcademic researchpeer-review

Abstract

Background:
Assessment of speech intelligibility in dysarthric speakers is an important measure that will inform how understandable dysarthric speech is. Currently there is a lack of such measure in Cantonese. The present study aimed to 1) develop a set of Cantonese sentences for assessment of speech intelligibility and bizarreness in Cantonese speakers with dysarthria; 2) examine if the newly developed assessment will be able to differentiate speech intelligibility and bizarreness between Cantonese speakers with and without dysarthria, as well as between dysarthria speakers with different degrees of dysarthria severity.

Methods:
14 Cantonese speakers with dysarthria and 14 age- and gender-matched Cantonese speaking healthy controls (HC) were recruited to serve as speakers. Each participant read aloud a set of 22 sentences (with a total of 220 words) randomly selected from a pool of newly developed 1100 sentences ranging from 5- to 15-word length. Eight naïve listeners served as judges for orthographic transcription and rating of speech intelligibility and bizarreness. Speech intelligibility scores was calculated by dividing the number of words transcribed correctly by the total number of words.

Results:
Cantonese speakers with dysarthria scored significantly lower than the HC group in speech intelligibility score, and were rated to be more deviated from normal in speech intelligibility and bizarreness ratings. Results also showed that dysarthric speakers with more severe dysarthria had significantly lower speech intelligibility score and rated to be more deviated from normal in speech intelligibility and bizarreness ratings. Higher intra-subject variation in speech intelligibility scores across sentences with different length were also noted in Cantonese speakers with dysarthria. Moreover, significant correlations between objective measure of speech intelligibility score and subjective measures of speech intelligibility and bizarreness ratings were also reported.

Conclusion:
The newly developed sentences for measurement of sentence intelligibility significantly differentiate
Cantonese speakers with dysarthria from HC.
Original languageEnglish
Publication statusNot published / presented only - 2021
Event18th Conference of the International Clinical Linguistics and Phonetics Association - Online from University of Strathclyde, Glasgow, United Kingdom
Duration: 23 Jun 202125 Jun 2021
https://www.strath.ac.uk/humanities/psychologicalscienceshealth/speechlanguagetherapy/icpla2020/

Conference

Conference18th Conference of the International Clinical Linguistics and Phonetics Association
Abbreviated titleICPLA
Country/TerritoryUnited Kingdom
CityGlasgow
Period23/06/2125/06/21
Internet address

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