Medizinische Universität Graz Austria/Österreich - Forschungsportal - Medical University of Graz
Gewählte Publikation:
SHR Neuro Krebs Kardio Lipid Stoffw Microb
Jakubaß, B; Peters, G; Kniesburges, S; Semmler, M; Kirsch, A; Gerstenberger, C; Gugatschka, M; Döllinger, M.
Effect of functional electric stimulation on phonation in an ex vivo aged ovine model.
J Acoust Soc Am. 2023; 153(5): 2803
Doi: 10.1121/10.0017923
Web of Science
PubMed
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- Co-Autor*innen der Med Uni Graz
- Gerstenberger Claus
- Gugatschka Markus
- Kirsch Andrijana
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- Abstract:
- With age, the atrophy of the thyroarytenoid muscle (TAM), and thus atrophy of the vocal folds, leads to decreased glottal closure, increased breathiness, and a loss in voice quality, which results in a reduced quality of life. A method to counteract the atrophy of the TAM is to induce hypertrophy in the muscle by functional electric stimulation (FES). In this study, phonation experiments were performed with ex vivo larynges of six stimulated and six unstimulated ten-year-old sheep to investigate the impact of FES on phonation. Electrodes were implanted bilaterally near the cricothyroid joint. FES treatment was provided for nine weeks before harvesting. The multimodal measurement setup simultaneously recorded high-speed video of the vocal fold oscillation, the supraglottal acoustic signal, and the subglottal pressure signal. Results of 683 measurements show a 65.6% lower glottal gap index, a 22.7% higher tissue flexibility (measured by the amplitude to length ratio), and a 473.7% higher coefficient of determination (R2) of the regression of subglottal and supraglottal cepstral peak prominence during phonation for the stimulated group. These results suggest that FES improves the phonatory process for aged larynges or presbyphonia.
- Find related publications in this database (using NLM MeSH Indexing)
- Sheep - administration & dosage
- Animals - administration & dosage
- Quality of Life - administration & dosage
- Vocal Cords - physiology
- Phonation - physiology
- Laryngeal Muscles - administration & dosage
- Electric Stimulation - administration & dosage