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Published January 30, 2022 | Version 1.2.0
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An Audibility Model of the Bone Conduction Device during Headband Trial in Single-sided Deaf Subjects.

Creators

  • 1. Department of Otorhinolaryngology, Head and Neck Surgery, University Medical Center Utrecht, Utrecht, The Netherlands

Description

Data and Code of the study

Abstract

Objective
We analysed the head-shadow-effect compensation in single-sided deafened (SSD) subjects fitted during the headband trial with a bone conduction device (BCD).

Design
In this retrospective study, we modelled audibility outcomes. The saved device settings of the participants were loaded on the BCD and used for measurements of the output force level on the skull simulator.
The sensation levels of the Bone-Conduction and Air-Conduction sound paths were compared, modelling three spatial conditions with speech in quiet. Full head-shadow-effect compensation occurred when the difference between sensation levels was equivalent of greater than 0.
We calculated the phoneme-score using the Speech Intelligibility Index for those conditions in quiet and, additionally, for seven conditions with speech and noise from different directions.

Study sample
Data from eighty-five SSD adults fitted with a BCD during the headband trial period. The subjects participated in a Randomized Control Trial.

Results
Most subjects did not reach a full head-shadow-effect compensation with the signal at the BCD-side and in front. The modelled outcomes of speech understanding in quiet did not improve with the transcutaneous BCD compared to the unaided condition. Regarding the speech understanding in noise, we found a slight improvement in some specific conditions and minimal worsening in others.

Conclusions
Based on an audibility model, this study challenges the fundamentals of a trial period with a transcutaneous BCD in subjects with SSD.

Notes

Related to: Peters, J. P., van Zon, A., Smit, A. L., van Zanten, G. A., de Wit, G. A., Stegeman, I., & Grolman, W. (2015). CINGLE-trial: cochlear implantation for siNGLE-sided deafness, a randomised controlled trial and economic evaluation. BMC Ear, Nose and Throat Disorders, 15(1), 3. https://doi.org/10.1186/s12901-015-0016-y

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Additional details

Related works

Cites
Journal article: 10.1186/s12901-015-001610.1186/s12901-015-0016-y-y (DOI)

References

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