Face-referenced measurement of perioral stiffness and speech kinematics in parkinson’s disease

Chu Shin Ying, Steven M. Barlow, Jaehoon Lee

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Purpose: Perioral biomechanics, labial kinematics, and associated electromyographic signals were sampled and characterized in individuals with Parkinson’s disease (PD) as a function of medication state. Method: Passive perioral stiffness was sampled using the OroSTIFF system in 10 individuals with PD in a medication ON and a medication OFF state and compared to 10 matched controls. Perioral stiffness, derived as the quotient of resultant force and interoral angle span, was modeled with regression techniques. Labial movement amplitudes and integrated electromyograms from select lip muscles were evaluated during syllable production using a 4-D computerized motion capture system. Results: Multilevel regression modeling showed greater perioral stiffness in patients with PD, consistent with the clinical correlate of rigidity. In the medication-OFF state, individuals with PD manifested greater integrated electromyogram levels for the orbicularis oris inferior compared to controls, which increased further after consumption of levodopa. Conclusions: This study illustrates the application of biomechanical, electrophysiological, and kinematic methods to better understand the pathophysiology of speech motor control in PD.

Original languageEnglish
Pages (from-to)201-212
Number of pages12
JournalJournal of Speech, Language, and Hearing Research
Volume58
Issue number2
DOIs
Publication statusPublished - 1 Apr 2015
Externally publishedYes

Fingerprint

Biomechanical Phenomena
Parkinson Disease
Disease
medication
Lip
Electromyography
regression
rigidity
Levodopa
Parkinson's Disease
Kinematics
Muscles
Medication

ASJC Scopus subject areas

  • Speech and Hearing
  • Language and Linguistics
  • Linguistics and Language

Cite this

Face-referenced measurement of perioral stiffness and speech kinematics in parkinson’s disease. / Shin Ying, Chu; Barlow, Steven M.; Lee, Jaehoon.

In: Journal of Speech, Language, and Hearing Research, Vol. 58, No. 2, 01.04.2015, p. 201-212.

Research output: Contribution to journalArticle

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