The Relationship Between Speech Production and Speech Perception Deficits in Parkinson's Disease Purpose This study investigated the possible relationship between hypokinetic speech production and speech intensity perception in patients with Parkinson's disease (PD). Method Participants included 14 patients with idiopathic PD and 14 matched healthy controls (HCs) with normal hearing and cognition. First, speech production was objectified through a standardized ... Research Article
Research Article  |   October 01, 2016
The Relationship Between Speech Production and Speech Perception Deficits in Parkinson's Disease
 
Author Affiliations & Notes
  • Kim De Keyser
    Department of Neurology, Ghent University Hospital, Belgium
    Department of Speech, Language, and Hearing Sciences, Ghent University, Belgium
    Parkinson Zorgwijzer Vlaanderen, Ghent University Hospital, Belgium
  • Patrick Santens
    Department of Neurology, Ghent University Hospital, Belgium
  • Annelies Bockstael
    INTEC, Acoustics Research Group, Ghent University, Belgium
  • Dick Botteldooren
    INTEC, Acoustics Research Group, Ghent University, Belgium
  • Durk Talsma
    Department of Experimental Psychology, Ghent University, Belgium
  • Stefanie De Vos
    Parkinson Zorgwijzer Vlaanderen, Ghent University Hospital, Belgium
  • Mieke Van Cauwenberghe
    Parkinson Zorgwijzer Vlaanderen, Ghent University Hospital, Belgium
  • Femke Verheugen
    Parkinson Zorgwijzer Vlaanderen, Ghent University Hospital, Belgium
  • Paul Corthals
    Department of Speech, Language, and Hearing Sciences, Ghent University, Belgium
  • Miet De Letter
    Department of Neurology, Ghent University Hospital, Belgium
    Department of Speech, Language, and Hearing Sciences, Ghent University, Belgium
    Parkinson Zorgwijzer Vlaanderen, Ghent University Hospital, Belgium
  • Disclosure: The authors have declared that no competing interests existed at the time of publication.
    Disclosure: The authors have declared that no competing interests existed at the time of publication. ×
  • Correspondence to Kim De Keyser: Kim.DeKeyser@UGent.be
  • Editor: Jody Kreiman
    Editor: Jody Kreiman×
  • Associate Editor: Julie Liss
    Associate Editor: Julie Liss×
Article Information
Hearing & Speech Perception / Special Populations / Older Adults & Aging / Speech, Voice & Prosody / Speech / Research Articles
Research Article   |   October 01, 2016
The Relationship Between Speech Production and Speech Perception Deficits in Parkinson's Disease
Journal of Speech, Language, and Hearing Research, October 2016, Vol. 59, 915-931. doi:10.1044/2016_JSLHR-S-15-0197
History: Received June 3, 2015 , Revised November 22, 2015 , Accepted January 17, 2016
 
Journal of Speech, Language, and Hearing Research, October 2016, Vol. 59, 915-931. doi:10.1044/2016_JSLHR-S-15-0197
History: Received June 3, 2015; Revised November 22, 2015; Accepted January 17, 2016

Purpose This study investigated the possible relationship between hypokinetic speech production and speech intensity perception in patients with Parkinson's disease (PD).

Method Participants included 14 patients with idiopathic PD and 14 matched healthy controls (HCs) with normal hearing and cognition. First, speech production was objectified through a standardized speech intelligibility assessment, acoustic analysis, and speech intensity measurements. Second, an overall estimation task and an intensity estimation task were addressed to evaluate overall speech perception and speech intensity perception, respectively. Finally, correlation analysis was performed between the speech characteristics of the overall estimation task and the corresponding acoustic analysis. The interaction between speech production and speech intensity perception was investigated by an intensity imitation task.

Results Acoustic analysis and speech intensity measurements demonstrated significant differences in speech production between patients with PD and the HCs. A different pattern in the auditory perception of speech and speech intensity was found in the PD group.

Conclusions Auditory perceptual deficits may influence speech production in patients with PD. The present results suggest a disturbed auditory perception related to an automatic monitoring deficit in PD.

Acknowledgments
A grant from the Special Research Fund at Ghent University was awarded to Kim De Keyser. We would like to thank all the participants. We are also grateful to Nicolas Roose for his additional suggestions regarding the quality of the style of writing.
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