The Effects of Speech Task on Lexical Stress in Parkinson’s Disease.
Purpose: Hypokinetic dysarthria associated with Parkinson’s disease (PD) is characterized by dysprosody, yet the literature is mixed with respect to how dysprosody affects the ability to mark lexical stress, possibly due to differences in speech tasks used to assess lexical stress. The purpose of th...
| Publicado en: | American Journal of Speech-Language Pathology Vol. 32; no. 2; pp. 506 - 523 |
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| Autores principales: | , , , , |
| Formato: | research tables/charts Journal Article |
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American Speech-Language-Hearing Association
Mar2023
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=162394744&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 162394744 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 10580360 5E7 jtl: American Journal of Speech-Language Pathology issn: 10580360 maglogo: N pubinfo: dt: Mar2023 vid: 32 iid: 2 pid: 42 pub: American Speech-Language-Hearing Association place: Rockville, Maryland artinfo: ui: 162394744 162394744 162394744 10.1044/2022_AJSLP-22-00185 162394744 ppf: 506 ppct: 17 formats: tig: atl: The Effects of Speech Task on Lexical Stress in Parkinson’s Disease. aug: au: Exner, Andrew H. Francis, Alexander L. MacPherson, Megan K. Darling-White, Meghan Huber, Jessica E. affil: Department of Speech, Language, and Hearing Sciences, Purdue University, West Lafayette, IN. sug: subj: Parkinson Disease Rehabilitation Speech Acoustics Evaluation Language Processing Evaluation Task Performance and Analysis Speech and Language Assessment Human Funding Source Comparative Studies Matched Case Control Male Female Aged Speech Production Measurement Word Lists Aged, 80 and Over Language Tests Descriptive Statistics Post Hoc Analysis Repeated Measures Confidence Intervals Data Analysis Software Aged: 65+ years Aged, 80 & over Male Female ab: Purpose: Hypokinetic dysarthria associated with Parkinson’s disease (PD) is characterized by dysprosody, yet the literature is mixed with respect to how dysprosody affects the ability to mark lexical stress, possibly due to differences in speech tasks used to assess lexical stress. The purpose of this study was to compare how people with and without PD modulate acoustic dimensions of lexical stress—fundamental frequency, intensity, and duration—to mark lexical stress across three different speech tasks. Method: Twelve individuals with mild-to-moderate idiopathic PD and 12 age- and sex-matched older adult controls completed three speech tasks: picture description, word production in isolation, and word production in lists. Outcome measures were the fundamental frequency, intensity, and duration of the vocalic segments of two trochees (initial stress) and two iambs (final stress) spoken in all three tasks. Results: There were very few group differences. Both groups marked trochees by modulating intensity and fundamental frequency and iambs by modulating duration. Task had a significant impact on the stress patterns used by both groups. Stress patterns were most differentiated in words produced in isolation and least differentiated in lists of words. Conclusions: People with PD did not demonstrate impairments in the production of lexical stress, suggesting that dysprosody associated with PD does not impact all types of prosody in the same way. However, there were reduced distinctions in stress marking that were more apparent in trochees than iambs. In addition, the task used to assess prosody has a significant effect on all acoustic measures. Future research should focus on the use of connected speech tasks to obtain more generalizable measures of prosody in PD. pubtype: Academic Journal doctype: research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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