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4. Leveraging Deep Neural Networks in Hearing Aids.

Author

Seitz-Paquette, Kevin, Keller, Matthias, Miller, Anne, Wright, Ashley, Kuehnel, Volker, Latzel, Matthias, Raufer, Stefan, and Shin-Shin Hobi

Subjects
NOISE control, HEARING aids, PRODUCT design, COMMERCIAL product evaluation, ARTIFICIAL neural networks, HEARING, SOFTWARE architecture, HEARING levels, SPEECH perception
Published
2024

6. Consensus Statement on Bone Conduction Devices and Active Middle Ear Implants in Conductive and Mixed Hearing Loss

Author

Maier, Hannes, Lenarz, Thomas, Agha-Mir-Salim, Parwis, Agterberg, Martijn J. H., Anagiotos, Andreas, Arndt, Susan, Ball, Geoffrey, Bance, Manohar, Barbara, Maurizio, Baumann, Uwe, Baumgartner, Wolfgang, Bernardeschi, Daniele, Beutner, Dirk, Bosman, Arjan, Briggs, Robert, Busch, Susan, Caversaccio, Marco, Dahm, Markus, Dalhoff, Ernst, Deveze, Arnaud, Ebrahimi-Madiseh, Azadeh, Fraysse, Bernard, Frenzel, Henning, Gavilan, Javier, Ghoncheh, Mohammad, Hakansson, Bo E. V, Hodgetts, William, Hol, Myrthe, Hol-land, Julian, Holmberg, Marcus, Huber, Alexander M., Jenkins, Herman, Katiri, Roulla, Kheirkhah, Kiana, Koitschev, Assen, Kompis, Martin, Lanting, Cris, Lassaletta, Luis, Lerut, Bob, Leuwer, Rudolf, Linder, Thomas, Loewenheim, Hubert, Lustig, Lawrence, Mandavia, Rishi, Manrique, Manuel, Martins, Jorge Humberto, Mertens, Griet, Mlynski, Robert, Mojallal, Hamidreza, Monini, Simonetta, Monksfield, Peter, Mueller, Alexander, Mylanus, Emmanuel, Nakajima, Hideko, Neudert, Marcus, Offeciers, Erwin, Pfiffner, Flurin, Pietsch, Markus, Plontke, Stefan K., Prenzler, Nils, Profant, Milan, Rahne, Torsten, Rajan, Gunesh, Ratuszniak, Anna, Raufer, Stefan, Ray, Jaydip, Reinfeldt, Sabine, Roosli, Christof, Rosenbom, Tove, Salcher, Rolf, Schoenermark, Matthias, Schwab, Burkard, Skarzynski, Henryk, Skarkynski, Piotr H., Snapp, Hillary, Sprinzl, Georg, Spearman, Michael, Stenfelt, Stefan, Stieger, Christof, Tringali, Stephane, Truy, Eric, Tysome, James, Van de Heyning, Paul, Verhaert, Nicolas, Wesarg, Thomas, Westerkull, Patrik, Wollenberg, Barbara, Zahnert, Thomas, Zarowski, Andrzej, Snik, Ad, Maier, Hannes, Lenarz, Thomas, Agha-Mir-Salim, Parwis, Agterberg, Martijn J. H., Anagiotos, Andreas, Arndt, Susan, Ball, Geoffrey, Bance, Manohar, Barbara, Maurizio, Baumann, Uwe, Baumgartner, Wolfgang, Bernardeschi, Daniele, Beutner, Dirk, Bosman, Arjan, Briggs, Robert, Busch, Susan, Caversaccio, Marco, Dahm, Markus, Dalhoff, Ernst, Deveze, Arnaud, Ebrahimi-Madiseh, Azadeh, Fraysse, Bernard, Frenzel, Henning, Gavilan, Javier, Ghoncheh, Mohammad, Hakansson, Bo E. V, Hodgetts, William, Hol, Myrthe, Hol-land, Julian, Holmberg, Marcus, Huber, Alexander M., Jenkins, Herman, Katiri, Roulla, Kheirkhah, Kiana, Koitschev, Assen, Kompis, Martin, Lanting, Cris, Lassaletta, Luis, Lerut, Bob, Leuwer, Rudolf, Linder, Thomas, Loewenheim, Hubert, Lustig, Lawrence, Mandavia, Rishi, Manrique, Manuel, Martins, Jorge Humberto, Mertens, Griet, Mlynski, Robert, Mojallal, Hamidreza, Monini, Simonetta, Monksfield, Peter, Mueller, Alexander, Mylanus, Emmanuel, Nakajima, Hideko, Neudert, Marcus, Offeciers, Erwin, Pfiffner, Flurin, Pietsch, Markus, Plontke, Stefan K., Prenzler, Nils, Profant, Milan, Rahne, Torsten, Rajan, Gunesh, Ratuszniak, Anna, Raufer, Stefan, Ray, Jaydip, Reinfeldt, Sabine, Roosli, Christof, Rosenbom, Tove, Salcher, Rolf, Schoenermark, Matthias, Schwab, Burkard, Skarzynski, Henryk, Skarkynski, Piotr H., Snapp, Hillary, Sprinzl, Georg, Spearman, Michael, Stenfelt, Stefan, Stieger, Christof, Tringali, Stephane, Truy, Eric, Tysome, James, Van de Heyning, Paul, Verhaert, Nicolas, Wesarg, Thomas, Westerkull, Patrik, Wollenberg, Barbara, Zahnert, Thomas, Zarowski, Andrzej, and Snik, Ad

Abstract

Nowadays, several options are available to treat patients with conductive or mixed hearing loss. Whenever surgical intervention is not possible or contra-indicated, and amplification by a conventional hearing device (e.g., behind-the-ear device) is not feasible, then implantable hearing devices are an indispensable next option. Implantable bone-conduction devices and middle-ear implants have advantages but also limitations concerning complexity/invasiveness of the surgery, medical complications, and effectiveness. To counsel the patient, the clinician should have a good overview of the options with regard to safety and reliability as well as unequivocal technical performance data. The present consensus document is the outcome of an extensive iterative process including ENT specialists, audiologists, health-policy scientists, and representatives/technicians of the main companies in this field. This document should provide a first framework for procedures and technical characterization to enhance effective communication between these stakeholders, improving health care., Funding Agencies|Cochlear Ltd; MED-EL Medical Electronics and Oticon Medical

Published
2022
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7. Output performance of the novel active transcutaneous bone conduction implant Sentio at different stimulation sites

Author

Ghoncheh, Mohammad, Stenfelt, Stefan, Maas, Patrick, Salcher, Rolf, Prenzler, Nils, Raufer, Stefan, Maier, Hannes, Ghoncheh, Mohammad, Stenfelt, Stefan, Maas, Patrick, Salcher, Rolf, Prenzler, Nils, Raufer, Stefan, and Maier, Hannes

Abstract

Objectives: The output performance of a novel semi-implantable transcutaneous bone conduction device was compared to an established percutaneous bone-anchored hearing system device using cadaver heads. The influence of actuator position, tissue growth below the actuator and mounting it on the surface or in a flattened bone bed on the performance of the implanted actuator was investigated.Materials and Methods: The percutaneous and the new transcutaneous device were sequentially implanted at two sites in five human cadaver heads: 55 mm superior-posterior to the ear canal opening (position A) and, closer to the cochlea, about 20 mm inferior-posterior to the ear canal opening behind the pinna on the mastoid (position B). The ipsi-and contralateral cochlear promontory (CP) velocity magnitude responses to percutaneous and transcutaneous stimulation were measured using laser Doppler vibrometry. In addition, the CP vibration of the transcutaneous device placed directly on the skull bone surface was compared with the placement in a flattened bone bed at a depth of about 3 mm. Finally, the influence of placing a thin silicone interposition layer under the implanted transducer was also explored.Results: The percutaneous device provided about an 11 dB higher average CP vibration level than the transcutaneous device at frequencies between 0.5 and 10 kHz. The ipsilateral CP vibration responses with stimulations at position B were on average 13 dB higher compared to stimulation at position A. The placement of the transcutaneous transducer at position B provided similar or higher average vibration magnitudes than the percutaneous transducer at position A. The 3 mm deep flattened bone bed had no significant effects on the output performance. Placing a thin silicone layer under the transcutaneous transducer had no significant influence on the output of the transcutaneous device.Conclusions: Our results using the CP vibration responses show that at frequencies above 500 Hz the new tr, Funding Agencies|DFG Cluster of Excellence [EXC 1077/1]; Oticon Medical and William Demant FoundationLicensing: CC BY license ( http://creativecommons.org/licenses/by/4.0/ )

Published
2022
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17. Impedance Measurements of the Human Cochlear Partition.

Author

Raufer, Stefan and Nakajima, Hideko H.

Subjects
*COCHLEA, *HEARING, *AUDITORY pathways, *BASILAR membrane, *BIOLOGICAL membranes, *INNER ear, *CORTI'S organ
Abstract

The cochlea is a mechanical frequency analyzer, owing its characteristics to the impedance of the cochlear partition. In humans, the impedance of the partition has not been measured directly, and estimates of the stiffness (a principal component of the impedance) are based on loose assumptions. In this study, we examine not only the stiffness of the basilar membrane (BM), but also the osseous spiral lamina (OSL), which, in human, vibrates substantially. We hypothesize that the OSL contributes significantly to the volume stiffness of the cochlear partition (CP). We measured velocities of the BM and OSL at different radial locations 1mm from the base of the cochlea in a fresh human cadaveric specimen. Simultaneously, we measured intracochlear pressures on the other side of the partition, in scala vestibuli. With the velocity and pressure measurements we can estimate the specific acoustic impedance of the BM and OSL (Z = p/v). At frequencies well below the resonant frequency, the stiffness of these structures can be extracted by multiplying the impedance by the radian frequency. The specific acoustic stiffness was found to be 1.2 GPa/m on the BM, 6 GPa/m at the juncture where the BM attaches to the OSL, and 10 GPa/m at the midpoint of the OSL. A beam model, appropriate to model the radial motion of the BM in guinea pig or gerbil, cannot describe the displacement of the human CP in the base. Instead, we find that the OSL is hinged near the modiolus and vibrates significantly near the connection to the more compliant BM, contributing greatly the volume compliance of the CP. [ABSTRACT FROM AUTHOR]

Published
2018
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18. The Effect of Middle Ear Cavity and Superior Canal Dehiscence on Wideband Acoustic Immittance in Fresh Human Cadaveric Specimens.

Author

Masud, Salwa F., Raufer, Stefan, Neely, Stephen T., and Nakajima, Hideko H.

Subjects
*SEMICIRCULAR canals, *VESTIBULAR apparatus, *MIDDLE ear diseases, *TEMPORAL bone, *BASILAR membrane, *BIOLOGICAL membranes
Abstract

Superior canal dehiscence (SCD) is a hole in the bony wall of the superior semicircular canal, which can cause various auditory and/or vestibular symptoms and can result in wrong and/or delayed diagnosis. Wideband acoustic immittance (WAI) can potentially distinguish various mechanical middle-ear pathologies as well as inner-ear pathologies non-invasively. We found that in patients, SCD was commonly associated with a narrow-band decrease in power reflectance (PR, derived from WAI) near 1 kHz. Because clinical data has large variation across individual ears and because we do not know the individual "normal" state prior to SCD, we measured WAI in five fresh temporal bone specimens to determine the effects of SCD with respect to the normal state. In temporal bone, we measured PR to assess mechanical changes before and after SCD, as well as to assess the effect of an open or closed middle-ear cavity. After SCD, PR had a consistent decrease between 0.48 and 0.76 kHz, and a slight increase between 1.04 and 1.4 kHz in the open cavity condition. However, in several experiments, we observed low PR around 1 kHz in the normal state before SCD, likely due to the specimen's open middle ear cavity (MEC). Because we see effects of both SCD and open MEC around 1 kHz, some of the SCD effect can be masked by the effect of the MEC in the temporal bone specimens. To compensate for this MEC effect, we estimated the effect of SCD in a closed MEC case, but the effect did not differ significantly from the measured open MEC. This study demonstrates the limitation of temporal bone experiments with open MEC when studying inner-ear lesions with WAI. [ABSTRACT FROM AUTHOR]

Published
2018
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20. Output performance of the novel active transcutaneous bone conduction implant Sentio at different stimulation sites.

Author

Ghoncheh M, Stenfelt S, Maas P, Salcher R, Prenzler N, Raufer S, and Maier H

Subjects
Cadaver, Cochlea physiology, Humans, Silicones, Vibration, Bone Conduction physiology, Hearing Aids
Abstract

Objectives: The output performance of a novel semi-implantable transcutaneous bone conduction device was compared to an established percutaneous bone-anchored hearing system device using cadaver heads. The influence of actuator position, tissue growth below the actuator and mounting it on the surface or in a flattened bone bed on the performance of the implanted actuator was investigated., Materials and Methods: The percutaneous and the new transcutaneous device were sequentially implanted at two sites in five human cadaver heads: 55 mm superior-posterior to the ear canal opening (position A) and, closer to the cochlea, about 20 mm inferior-posterior to the ear canal opening behind the pinna on the mastoid (position B). The ipsi- and contralateral cochlear promontory (CP) velocity magnitude responses to percutaneous and transcutaneous stimulation were measured using laser Doppler vibrometry. In addition, the CP vibration of the transcutaneous device placed directly on the skull bone surface was compared with the placement in a flattened bone bed at a depth of about 3 mm. Finally, the influence of placing a thin silicone interposition layer under the implanted transducer was also explored., Results: The percutaneous device provided about an 11 dB higher average CP vibration level than the transcutaneous device at frequencies between 0.5 and 10 kHz. The ipsilateral CP vibration responses with stimulations at position B were on average 13 dB higher compared to stimulation at position A. The placement of the transcutaneous transducer at position B provided similar or higher average vibration magnitudes than the percutaneous transducer at position A. The 3 mm deep flattened bone bed had no significant effects on the output performance. Placing a thin silicone layer under the transcutaneous transducer had no significant influence on the output of the transcutaneous device., Conclusions: Our results using the CP vibration responses show that at frequencies above 500 Hz the new transcutaneous device at position B provides similar output levels as the percutaneous device at position A. The results also indicated that neither a bone bed for the placement of the transcutaneous transducer nor a simulated tissue growth between the actuator and the bone affect the output performance of the device., (Copyright © 2021 The Authors. Published by Elsevier B.V. All rights reserved.)

Published
2022
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