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Model predictions for bone conduction perception in the human
Linköping University, Department of Clinical and Experimental Medicine, Division of Neuro and Inflammation Science. Linköping University, Faculty of Medicine and Health Sciences.ORCID iD: 0000-0003-3350-8997
2016 (English)In: Hearing Research, ISSN 0378-5955, E-ISSN 1878-5891, no 15, 30076-30079 p.Article in journal (Refereed) Published
Abstract [en]

Five different pathways are often suggested as important for bone conducted (BC) sound: (1) sound pressure in the ear canal, (2) inertia of the middle ear ossicles, (3) inertia of the inner ear fluid, (4) compression of the inner ear space, and (5) pressure transmission from the skull interior. The relative importance of these pathways was investigated with an acoustic-impedance model of the inner ear. The model incorporated data of BC generated ear canal sound pressure, middle ear ossicle motion, cochlear promontory vibration, and intracranial sound pressure. With BC stimulation at the mastoid, the inner ear inertia dominated the excitation of the cochlea but inner ear compression and middle ear inertia were within 10 dB for almost the entire frequency range of 0.1-10 kHz. Ear canal sound pressure gave little contribution at the low and high frequencies, but was around 15 dB below the total contribution at the mid frequencies. Intracranial sound pressure gave responses similar to the others at low frequencies, but decreased with frequency to a level of 55 dB below the total contribution at 10 kHz. When the BC inner ear model was evaluated against AC stimulation at threshold levels, the results were close up to approximately 4 kHz but deviated significantly at higher frequencies.

Place, publisher, year, edition, pages
Elsevier, 2016. no 15, 30076-30079 p.
Keyword [en]
Bone conduction; Fluid inertia; Inner ear compression; Inner ear model; Middle ear inertia
National Category
Otorhinolaryngology
Identifiers
URN: urn:nbn:se:liu:diva-125727DOI: 10.1016/j.heares.2015.10.014ISI: 000386417900017PubMedID: 26657096OAI: oai:DiVA.org:liu-125727DiVA: diva2:908091
Funder
EU, FP7, Seventh Framework Programme, 600933
Available from: 2016-03-01 Created: 2016-03-01 Last updated: 2017-11-30

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Stenfelt, Stefan

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