Publication detail

Vowel Articulation Distortion in Parkinson’s Disease

GOMEZ-VILDA, P. FERRÁNDEZ-VICENTE, J. PALACIOS-ALONSO, D. GÓMEZ-RODELLAR, A. RODELLAR BIARGE, M. MEKYSKA, J. SMÉKAL, Z. REKTOROVÁ, I. ELIÁŠOVÁ, I. KOŠŤÁLOVÁ, M.

Original Title

Vowel Articulation Distortion in Parkinson’s Disease

Type

conference paper

Language

English

Original Abstract

Neurodegenerative pathologies produce important distortions in speech. Parkinson’s Disease (PD) leaves marks in fluency, prosody, articulation and phonation. Certain measurements based in configurations of the articulation organs inferred from formant positions, as the Vocal Space Area (VSA) or the Formant Centralization Ratio (FCR) have been classically used in this sense, but these markers represent mainly the static positions of sustained vowels on the vowel triangle. The present study proposes a measurement based on the mutual information contents of kinematic correlates derived from formant dynamics. An absolute kinematic velocity associated to the position of the articulation organs, involving the jaw and tongue is estimated and modelled statistically. The distribution of this feature is rather different in PD patients than in normative speakers when sustained vowels are considered. Therefore, articulation failures may be detected even in single sustained vowels. The study has processed a limited database of 40 female and 54 male PD patients, contrasted to a very selected and stable set of normative speakers. Distances based on Kullback-Leibler’s Divergence have shown to be sensitive to PD articulation instability. Correlation measurements show that the distance proposed shows statistically relevant relationship with certain motor and non-motor behavioral observations, as freezing of gait, or sleep disorders. These results point out to the need of defining scoring scales specifically designed for speech-based diagnose and monitoring methodologies in degenerative diseases of neuromotor origin.

Keywords

Neurologic disease, Parkinson’s disease, speech neuromotor activity, aging voice, hypokinetic dysarthria

Authors

GOMEZ-VILDA, P.; FERRÁNDEZ-VICENTE, J.; PALACIOS-ALONSO, D.; GÓMEZ-RODELLAR, A.; RODELLAR BIARGE, M.; MEKYSKA, J.; SMÉKAL, Z.; REKTOROVÁ, I.; ELIÁŠOVÁ, I.; KOŠŤÁLOVÁ, M.

Released

27. 5. 2017

Publisher

Springer

Location

Cham

ISBN

978-3-319-59772-0

Book

Biomedical Applications Based on Natural and Artificial Computing

Pages from

21

Pages to

31

Pages count

11

BibTex

@inproceedings{BUT138470,
  author="Pedro {Gomez-Vilda} and José Manuel {Ferrández-Vicente} and Daniel {Palacios-Alonso} and Andrés {Gómez-Rodellar} and María Victoria {Rodellar Biarge} and Jiří {Mekyska} and Zdeněk {Smékal} and Irena {Rektorová} and Ilona {Eliášová} and Milena {Košťálová}",
  title="Vowel Articulation Distortion in Parkinson’s Disease",
  booktitle="Biomedical Applications Based on Natural and Artificial Computing",
  year="2017",
  pages="21--31",
  publisher="Springer",
  address="Cham",
  doi="10.1007/978-3-319-59773-7\{_}3",
  isbn="978-3-319-59772-0"
}