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Article

Benefits of Cartilage Conduction Hearing Aids for Speech Perception in Unilateral Aural Atresia

1
Department of Otolaryngology-Head and Neck Surgery, Nara Medical University, 840 Shijo-cho, Kashihara, Nara 634-8522, Japan
2
MBT (Medicine-Based Town) Institute, Nara Medical University, 840 Shijo-cho, Kashihara, Nara 634-8522, Japan
3
Graduate School of Engineering Science, Osaka University, D436, 1-3 Machikaneyama, Toyonaka, Osaka 560-8531, Japan
*
Author to whom correspondence should be addressed.
Academic Editor: Andrea Ciorba
Audiol. Res. 2021, 11(2), 284-290; https://doi.org/10.3390/audiolres11020026
Received: 24 May 2021 / Revised: 15 June 2021 / Accepted: 16 June 2021 / Published: 17 June 2021
(This article belongs to the Special Issue Bone and Cartilage Conduction)
Severe conductive hearing loss due to unilateral aural atresia leads to auditory and developmental disorders, such as difficulty in hearing in challenging situations. Bone conduction devices compensate for the disability but unfortunately have several disadvantages. The aim of this study was to evaluate the benefits of cartilage conduction (CC) hearing aids for speech perception in unilateral aural atresia. Eleven patients with unilateral aural atresia were included. Each participant used a CC hearing aid in the atretic ear. Speech recognition scores in the binaural hearing condition were obtained at low speech levels to evaluate the contribution of aided atretic ears to speech perception. Speech recognition scores were also obtained with and without presentation of noise. These assessments were compared between the unaided and aided atretic ear conditions. Speech recognition scores at low speech levels were significantly improved under the aided atretic ear condition (p < 0.05). A CC hearing aid in the unilateral atretic ear did not significantly improve the speech recognition score in a symmetrical noise presentation condition. The binaural hearing benefits of CC hearing aids in unilateral aural atresia were predominantly considered a diotic summation. Other benefits of binaural hearing remain to be investigated. View Full-Text
Keywords: atretic ear; unilateral conductive hearing loss; bone conduction; diotic summation; speech recognition atretic ear; unilateral conductive hearing loss; bone conduction; diotic summation; speech recognition
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MDPI and ACS Style

Akasaka, S.; Nishimura, T.; Hosoi, H.; Saito, O.; Shimokura, R.; Morimoto, C.; Kitahara, T. Benefits of Cartilage Conduction Hearing Aids for Speech Perception in Unilateral Aural Atresia. Audiol. Res. 2021, 11, 284-290. https://doi.org/10.3390/audiolres11020026

AMA Style

Akasaka S, Nishimura T, Hosoi H, Saito O, Shimokura R, Morimoto C, Kitahara T. Benefits of Cartilage Conduction Hearing Aids for Speech Perception in Unilateral Aural Atresia. Audiology Research. 2021; 11(2):284-290. https://doi.org/10.3390/audiolres11020026

Chicago/Turabian Style

Akasaka, Sakie, Tadashi Nishimura, Hiroshi Hosoi, Osamu Saito, Ryota Shimokura, Chihiro Morimoto, and Tadashi Kitahara. 2021. "Benefits of Cartilage Conduction Hearing Aids for Speech Perception in Unilateral Aural Atresia" Audiology Research 11, no. 2: 284-290. https://doi.org/10.3390/audiolres11020026

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