01 December 2011
Vibrations in the human middle ear
Rafal RusinekABCDEG, Marcin SzymanskiBCD, Jerzy WarminskiADE, Marek ZadrozniakBF, Kamal MorshedAFDOI: 10.12659/MSM.882123
Med Sci Monit 2011; 17(12): BR372-376
Abstract
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.
Keywords: Sound, Pressure, Incus - physiology, Ear, Middle - physiology, Stapes - physiology, Vibration
Editorial
01 May 2024 : Editorial
Editorial: First Regulatory Approval for Adoptive Cell Therapy with Autologous Tumor-Infiltrating Lymphocytes (TILs) – Lifileucel (Amtagvi)DOI: 10.12659/MSM.944927
Med Sci Monit 2024; 30:e944927
In Press
12 Mar 2024 : Clinical Research
Tissue Inhibitors of Metalloproteinase 1 (TIMP-1) and 3 (TIMP-3) as New Markers of Acute Kidney Injury Afte...Med Sci Monit In Press; DOI: 10.12659/MSM.943500
12 Mar 2024 : Review article
Optimizing Behçet Uveitis Management: A Review of Personalized Immunosuppressive StrategiesMed Sci Monit In Press; DOI: 10.12659/MSM.943240
12 Mar 2024 : Clinical Research
Metabolomic Alterations in Methotrexate Treatment of Moderate-to-Severe PsoriasisMed Sci Monit In Press; DOI: 10.12659/MSM.943360
14 Mar 2024 : Clinical Research
Renal Dysfunction Increases Risk of Adverse Cardiovascular Events in 5-Year Follow-Up Study of Intermediate...Med Sci Monit In Press; DOI: 10.12659/MSM.943956
Most Viewed Current Articles
17 Jan 2024 : Review article
Vaccination Guidelines for Pregnant Women: Addressing COVID-19 and the Omicron VariantDOI :10.12659/MSM.942799
Med Sci Monit 2024; 30:e942799
14 Dec 2022 : Clinical Research
Prevalence and Variability of Allergen-Specific Immunoglobulin E in Patients with Elevated Tryptase LevelsDOI :10.12659/MSM.937990
Med Sci Monit 2022; 28:e937990
16 May 2023 : Clinical Research
Electrophysiological Testing for an Auditory Processing Disorder and Reading Performance in 54 School Stude...DOI :10.12659/MSM.940387
Med Sci Monit 2023; 29:e940387
01 Jan 2022 : Editorial
Editorial: Current Status of Oral Antiviral Drug Treatments for SARS-CoV-2 Infection in Non-Hospitalized Pa...DOI :10.12659/MSM.935952
Med Sci Monit 2022; 28:e935952