The Effects of Intensive Voice Treatment in Mandarin Speakers With Parkinson’s Disease: Acoustic and Perceptual Findings

Sih Chiao Hsu, Yishan Jiao, Visar Berisha, Shih Jung Cheng, Erika S. Levy, Megan J. McAuliffe, Peiyi Lin, Ruey Meei Wu

Research output: Contribution to journalArticlepeer-review

Abstract

Purpose: This study investigated the effects of intensive voice treatment on subjective and objective measures of speech production in Mandarin speakers with hypokinetic dysarthria. Method: Nine Mandarin speakers with hypokinetic dysarthria due to Parkinson’s disease received 4 weeks of intensive voice treatment (4 × 60 min per week). The speakers were recorded reading a passage before treatment (PRE), immediately after treatment (POST), and at 6-month follow-up (FU). Listeners (n = 15) rated relative ease of understanding (EOU) of paired speech samples on a visual analogue scale. Acoustic analyses were performed. Changes in EOU, vocal intensity, global and local fundamental frequency (fo) variation, speech rate, and acoustic vowel space area (VSA) were examined. Results: Increases were found in EOU and vocal intensity from PRE to POST and from PRE to FU, with no change found from POST to FU. Speech rate increased from PRE to POST, with limited evidence of an increase from PRE to FU and no change from POST to FU. No changes in global or local fo variation or in VSA were found. Conclusions: Intensive voice treatment shows promise for improving speech production in Mandarin speakers with hypokinetic dysarthria. Vocal intensity, speech rate, and, crucially, intelligibility, may improve for up to 6 months posttreatment. In contrast, fo variation and VSA may not increase following the treatment. Supplemental Material: https://doi.org/10.23641/asha.19529017.

Original languageEnglish (US)
Pages (from-to)1354-1357
Number of pages4
JournalAmerican journal of speech-language pathology
Volume31
Issue number3
DOIs
StatePublished - May 2022
Externally publishedYes

ASJC Scopus subject areas

  • Otorhinolaryngology
  • Developmental and Educational Psychology
  • Linguistics and Language
  • Speech and Hearing

Fingerprint

Dive into the research topics of 'The Effects of Intensive Voice Treatment in Mandarin Speakers With Parkinson’s Disease: Acoustic and Perceptual Findings'. Together they form a unique fingerprint.

Cite this