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Vibrations in the human middle ear

BACKGROUND: Middle ear surgery techniques can improve hearing destroyed by disease, but results of treatment are difficult to predict. Therefore, researchers use a Laser Doppler Vibrometer to measure vibrations of human middle ear ossicles. MATERIAL/METHODS: Measurements of ossicular chain vibration...

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Autores principales: Rusinek, Rafał, Szymański, Marcin, Warmiński, Jerzy, Zadrozniak, Marek, Morshed, Kamal
Formato: Online Artículo Texto
Lenguaje:English
Publicado: International Scientific Literature, Inc. 2011
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3628134/
https://www.ncbi.nlm.nih.gov/pubmed/22129895
http://dx.doi.org/10.12659/MSM.882123
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author Rusinek, Rafał
Szymański, Marcin
Warmiński, Jerzy
Zadrozniak, Marek
Morshed, Kamal
author_facet Rusinek, Rafał
Szymański, Marcin
Warmiński, Jerzy
Zadrozniak, Marek
Morshed, Kamal
author_sort Rusinek, Rafał
collection PubMed
description BACKGROUND: Middle ear surgery techniques can improve hearing destroyed by disease, but results of treatment are difficult to predict. Therefore, researchers use a Laser Doppler Vibrometer to measure vibrations of human middle ear ossicles. MATERIAL/METHODS: Measurements of ossicular chain vibrations are performed on fresh human temporal bone specimens using Laser Doppler Vibrometer. Vibrations of stapes are recorded in 3 cases: 1) for intact ossicular chain, 2) when incus long process is removed, and 3) after long process reconstruction with bone cement. A typical analysis of transfer function is completed by other methods applied in dynamics. RESULTS: Measurements and analysis of stapes vibrations in case of intact and damaged ossicular chain show regular and irregular behavior which can be recognize with the help of phase portraits, recurrence plots, correlation dimension, and Hurst and Lyapunov exponents. The long process reconstruction with bone cement gives good results in improving hearing. CONCLUSIONS: Recurrence plots, and Lyapunov and Hurst exponents used in the study complete information obtained from transfer function and can be employed to enrich the classical approach to ossicular chain vibrations.
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spelling pubmed-36281342013-04-24 Vibrations in the human middle ear Rusinek, Rafał Szymański, Marcin Warmiński, Jerzy Zadrozniak, Marek Morshed, Kamal Med Sci Monit Basic Research BACKGROUND: Middle ear surgery techniques can improve hearing destroyed by disease, but results of treatment are difficult to predict. Therefore, researchers use a Laser Doppler Vibrometer to measure vibrations of human middle ear ossicles. MATERIAL/METHODS: Measurements of ossicular chain vibrations are performed on fresh human temporal bone specimens using Laser Doppler Vibrometer. Vibrations of stapes are recorded in 3 cases: 1) for intact ossicular chain, 2) when incus long process is removed, and 3) after long process reconstruction with bone cement. A typical analysis of transfer function is completed by other methods applied in dynamics. RESULTS: Measurements and analysis of stapes vibrations in case of intact and damaged ossicular chain show regular and irregular behavior which can be recognize with the help of phase portraits, recurrence plots, correlation dimension, and Hurst and Lyapunov exponents. The long process reconstruction with bone cement gives good results in improving hearing. CONCLUSIONS: Recurrence plots, and Lyapunov and Hurst exponents used in the study complete information obtained from transfer function and can be employed to enrich the classical approach to ossicular chain vibrations. International Scientific Literature, Inc. 2011-12-01 /pmc/articles/PMC3628134/ /pubmed/22129895 http://dx.doi.org/10.12659/MSM.882123 Text en © Med Sci Monit, 2011 This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License.
spellingShingle Basic Research
Rusinek, Rafał
Szymański, Marcin
Warmiński, Jerzy
Zadrozniak, Marek
Morshed, Kamal
Vibrations in the human middle ear
title Vibrations in the human middle ear
title_full Vibrations in the human middle ear
title_fullStr Vibrations in the human middle ear
title_full_unstemmed Vibrations in the human middle ear
title_short Vibrations in the human middle ear
title_sort vibrations in the human middle ear
topic Basic Research
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3628134/
https://www.ncbi.nlm.nih.gov/pubmed/22129895
http://dx.doi.org/10.12659/MSM.882123
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