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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" }