Sound Localization and Lateralization by Bilateral Bone Conduction Devices, Middle Ear Implants, and Cartilage Conduction Hearing Aids

Sound localization in daily life is one of the important functions of binaural hearing. Bilateral bone conduction devices (BCDs), middle ear implants, and cartilage conduction hearing aids have been often applied for patients with conductive hearing loss (CHL) or mixed hearing loss, for example, res...

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Main Author: Kimio Shiraishi
Format: Article
Language:English
Published: MDPI AG 2021-09-01
Series:Audiology Research
Subjects:
Online Access:https://www.mdpi.com/2039-4349/11/4/46
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author Kimio Shiraishi
author_facet Kimio Shiraishi
author_sort Kimio Shiraishi
collection DOAJ
description Sound localization in daily life is one of the important functions of binaural hearing. Bilateral bone conduction devices (BCDs), middle ear implants, and cartilage conduction hearing aids have been often applied for patients with conductive hearing loss (CHL) or mixed hearing loss, for example, resulting from bilateral microtia and aural atresia. In this review, factors affecting the accuracy of sound localization with bilateral BCDs, middle ear implants, and cartilage conduction hearing aids were classified into four categories: (1) types of device, (2) experimental conditions, (3) participants, and (4) pathways from the stimulus sound to both cochleae. Recent studies within the past 10 years on sound localization and lateralization by BCDs, middle ear implants, and cartilage conduction hearing aids were discussed. Most studies showed benefits for sound localization or lateralization with bilateral devices. However, the judgment accuracy was generally lower than that for normal hearing, and the localization errors tended to be larger than for normal hearing. Moreover, it should be noted that the degree of accuracy in sound localization by bilateral BCDs varied considerably among patients. Further research on sound localization is necessary to analyze the complicated mechanism of bone conduction, including suprathreshold air conduction with bilateral devices.
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spelling doaj.art-7575e2f8697543d3b3821c0ee167b4a22023-11-23T03:48:27ZengMDPI AGAudiology Research2039-43492021-09-0111450852310.3390/audiolres11040046Sound Localization and Lateralization by Bilateral Bone Conduction Devices, Middle Ear Implants, and Cartilage Conduction Hearing AidsKimio Shiraishi0Department of Communication Design Science, Faculty of Design, Kyushu University, Fukuoka 815-0032, JapanSound localization in daily life is one of the important functions of binaural hearing. Bilateral bone conduction devices (BCDs), middle ear implants, and cartilage conduction hearing aids have been often applied for patients with conductive hearing loss (CHL) or mixed hearing loss, for example, resulting from bilateral microtia and aural atresia. In this review, factors affecting the accuracy of sound localization with bilateral BCDs, middle ear implants, and cartilage conduction hearing aids were classified into four categories: (1) types of device, (2) experimental conditions, (3) participants, and (4) pathways from the stimulus sound to both cochleae. Recent studies within the past 10 years on sound localization and lateralization by BCDs, middle ear implants, and cartilage conduction hearing aids were discussed. Most studies showed benefits for sound localization or lateralization with bilateral devices. However, the judgment accuracy was generally lower than that for normal hearing, and the localization errors tended to be larger than for normal hearing. Moreover, it should be noted that the degree of accuracy in sound localization by bilateral BCDs varied considerably among patients. Further research on sound localization is necessary to analyze the complicated mechanism of bone conduction, including suprathreshold air conduction with bilateral devices.https://www.mdpi.com/2039-4349/11/4/46localizationlateralizationbinaural hearinghearing lossbone conduction devicemiddle ear implant
spellingShingle Kimio Shiraishi
Sound Localization and Lateralization by Bilateral Bone Conduction Devices, Middle Ear Implants, and Cartilage Conduction Hearing Aids
Audiology Research
localization
lateralization
binaural hearing
hearing loss
bone conduction device
middle ear implant
title Sound Localization and Lateralization by Bilateral Bone Conduction Devices, Middle Ear Implants, and Cartilage Conduction Hearing Aids
title_full Sound Localization and Lateralization by Bilateral Bone Conduction Devices, Middle Ear Implants, and Cartilage Conduction Hearing Aids
title_fullStr Sound Localization and Lateralization by Bilateral Bone Conduction Devices, Middle Ear Implants, and Cartilage Conduction Hearing Aids
title_full_unstemmed Sound Localization and Lateralization by Bilateral Bone Conduction Devices, Middle Ear Implants, and Cartilage Conduction Hearing Aids
title_short Sound Localization and Lateralization by Bilateral Bone Conduction Devices, Middle Ear Implants, and Cartilage Conduction Hearing Aids
title_sort sound localization and lateralization by bilateral bone conduction devices middle ear implants and cartilage conduction hearing aids
topic localization
lateralization
binaural hearing
hearing loss
bone conduction device
middle ear implant
url https://www.mdpi.com/2039-4349/11/4/46
work_keys_str_mv AT kimioshiraishi soundlocalizationandlateralizationbybilateralboneconductiondevicesmiddleearimplantsandcartilageconductionhearingaids