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Methods and reference data for middle ear transfer functions.
Koch M, Eßinger TM, Maier H, Sim JH, Ren L, Greene NT, Zahnert T, Neudert M, Bornitz M. Koch M, et al. Among authors: sim jh. Sci Rep. 2022 Oct 14;12(1):17241. doi: 10.1038/s41598-022-21245-w. Sci Rep. 2022. PMID: 36241675 Free PMC article.
Human temporal bone specimens are used in experiments measuring the sound transfer of the middle ear, which is the standard method used in the development of active and passive middle ear implants. ...We present an in-depth statistical analysis of 478 data sets of m …
Human temporal bone specimens are used in experiments measuring the sound transfer of the middle ear, which is the standard method us …
Effects of preloads on middle-ear transfer function and acoustic reflex in ossiculoplasty with PORP.
Schär M, Dobrev I, Röösli C, Huber AM, Sim JH. Schär M, et al. Among authors: sim jh. Hear Res. 2023 Mar 15;430:108709. doi: 10.1016/j.heares.2023.108709. Epub 2023 Feb 1. Hear Res. 2023. PMID: 36804054 Review.
INTRODUCTION: Surgical outcomes in ossiculoplasty with partial ossicular replacement prostheses (PORPs) are greatly influenced by the amount of preload imposed on the PORP. In this study, the attenuation of the middle-ear transfer function (METF) was experimentally investi …
INTRODUCTION: Surgical outcomes in ossiculoplasty with partial ossicular replacement prostheses (PORPs) are greatly influenced by the amount …
Three-dimensional quasi-static displacement of human middle-ear ossicles under static pressure loads: Measurement using a stereo camera system.
Pipping B, Dobrev I, Schär M, Chatzimichalis M, Röösli C, Huber AM, Sim JH. Pipping B, et al. Among authors: sim jh. Hear Res. 2023 Jan;427:108651. doi: 10.1016/j.heares.2022.108651. Epub 2022 Nov 14. Hear Res. 2023. PMID: 36462376 Free article. Review.
The time delay and/or malfunctioning of the Eustachian tube may cause pressure differences across the tympanic membrane, resulting in quasi-static movements of the middle-ear ossicles. While quasi-static displacements of the human middle-ear ossicles have been measu …
The time delay and/or malfunctioning of the Eustachian tube may cause pressure differences across the tympanic membrane, resulting in quasi- …
Comparison of sheep and human middle-ear ossicles: anatomy and inertial properties.
Péus D, Dobrev I, Pfiffner F, Sim JH. Péus D, et al. Among authors: sim jh. J Comp Physiol A Neuroethol Sens Neural Behav Physiol. 2020 Sep;206(5):683-700. doi: 10.1007/s00359-020-01430-w. Epub 2020 Jun 20. J Comp Physiol A Neuroethol Sens Neural Behav Physiol. 2020. PMID: 32564138 Free PMC article.
Characteristic dimensions and inertial properties of the middle-ear ossicles of White-Alpine sheep (n = 11) were measured from high-resolution micro-CT data, and were assessed in comparison with the corresponding values of the human middle ear. ...Considering the su …
Characteristic dimensions and inertial properties of the middle-ear ossicles of White-Alpine sheep (n = 11) were measured from high-r …
Contribution of the flexible incudo-malleal joint to middle-ear sound transmission under static pressure loads.
Warnholtz B, Schär M, Sackmann B, Lauxmann M, Chatzimichalis M, Prochazka L, Dobrev I, Huber AM, Sim JH. Warnholtz B, et al. Among authors: sim jh. Hear Res. 2021 Jul;406:108272. doi: 10.1016/j.heares.2021.108272. Epub 2021 May 11. Hear Res. 2021. PMID: 34038827 Free article.
The incudo-malleal joint (IMJ) in the human middle ear is a true diarthrodial joint and it has been known that the flexibility of this joint does not contribute to better middle-ear sound transmission. ...In this study, effects of the flexibility of the IMJ on middl …
The incudo-malleal joint (IMJ) in the human middle ear is a true diarthrodial joint and it has been known that the flexibility of thi …
A MEMS Condenser Microphone-Based Intracochlear Acoustic Receiver.
Pfiffner F, Prochazka L, Peus D, Dobrev I, Dalbert A, Sim JH, Kesterke R, Walraevens J, Harris F, Roosli C, Obrist D, Huber A. Pfiffner F, et al. Among authors: sim jh. IEEE Trans Biomed Eng. 2017 Oct;64(10):2431-2438. doi: 10.1109/TBME.2016.2640447. Epub 2016 Dec 16. IEEE Trans Biomed Eng. 2017. PMID: 28029613 Free article.
GOAL: Intracochlear sound pressure (ICSP) measurements are limited by the small dimensions of the human inner ear and the requirements imposed by the liquid medium. A robust intracochlear acoustic receiver (ICAR) for repeated use with a simple data acquisition system that …
GOAL: Intracochlear sound pressure (ICSP) measurements are limited by the small dimensions of the human inner ear and the requirement …
Sheep as a large animal ear model: Middle-ear ossicular velocities and intracochlear sound pressure.
Péus D, Dobrev I, Prochazka L, Thoele K, Dalbert A, Boss A, Newcomb N, Probst R, Röösli C, Sim JH, Huber A, Pfiffner F. Péus D, et al. Among authors: sim jh. Hear Res. 2017 Aug;351:88-97. doi: 10.1016/j.heares.2017.06.002. Epub 2017 Jun 7. Hear Res. 2017. PMID: 28601531
The sheep middle ear transmitted most effectively around 4.8 kHz, with a maximum stapes velocity of 0.2 mm/s/Pa. ...A comparison between the results of this study and human reference data showed middle-ear resonance and best cochlear sensitivity at higher frequencie …
The sheep middle ear transmitted most effectively around 4.8 kHz, with a maximum stapes velocity of 0.2 mm/s/Pa. ...A comparison betw …
A method to measure sound transmission via the malleus-incus complex.
Dobrev I, Ihrle S, Röösli C, Gerig R, Eiber A, Huber AM, Sim JH. Dobrev I, et al. Among authors: sim jh. Hear Res. 2016 Oct;340:89-98. doi: 10.1016/j.heares.2015.10.016. Epub 2015 Dec 2. Hear Res. 2016. PMID: 26626362 Free article.
METHODS: The motion of the MIC was measured in two cadaveric human temporal bones with intact middle-ear structures excited via a loudspeaker embedded in an artificial ear canal, in the frequency range of 0.5-5 kHz. Three-dimensional (3D) shapes of the middle-ear …
METHODS: The motion of the MIC was measured in two cadaveric human temporal bones with intact middle-ear structures excited via a lou …
A New Stapes-Head Coupler for the Vibrant Soundbridge System.
Warnholtz B, Schär M, Cuny P, Sonntag K, Beutner D, Dobrev I, Röösli C, Sim JH. Warnholtz B, et al. Among authors: sim jh. Audiol Neurootol. 2021;26(4):287-294. doi: 10.1159/000512600. Epub 2021 Mar 1. Audiol Neurootol. 2021. PMID: 33647905 Free article.
INTRODUCTION: The Vibrant Soundbridge (MED-EL Medical Electronics, Austria) is an active middle ear implant with a floating mass transducer (FMT) for patients with conductive, sensorineural, or mixed hearing loss. While the FMT is vertically aligned above the stapes head ( …
INTRODUCTION: The Vibrant Soundbridge (MED-EL Medical Electronics, Austria) is an active middle ear implant with a floating mass tran …
Effects of middle ear quasi-static stiffness on sound transmission quantified by a novel 3-axis optical force sensor.
Dobrev I, Sim JH, Aqtashi B, Huber AM, Linder T, Röösli C. Dobrev I, et al. Among authors: sim jh. Hear Res. 2018 Jan;357:1-9. doi: 10.1016/j.heares.2017.11.002. Epub 2017 Nov 10. Hear Res. 2018. PMID: 29149722
The stiffness of the middle ear is induced by a) using a novel fiber-optic 3-axis force sensor to quantify the quasi-static stiffness of the middle ear, and b) by artificial reduction of stapes mobility due to drying of the middle ear. METHODS: Middle ear …
The stiffness of the middle ear is induced by a) using a novel fiber-optic 3-axis force sensor to quantify the quasi-static stiffness …
41 results