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Transmission of bone conducted sound – Correlation between hearing perception and cochlear vibration
Sahlgrenska University Hospital, Göteborg University, Sweden.
Linköping University, Department of Clinical and Experimental Medicine, Technical Audiology. Linköping University, Faculty of Health Sciences.ORCID iD: 0000-0003-3350-8997
Chalmers University of Technology, Göteborg, Sweden.
Chalmers University of Technology, Göteborg, Sweden.
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2013 (English)In: Hearing Research, ISSN 0378-5955, E-ISSN 1878-5891, Vol. 306, 11-20 p.Article in journal (Refereed) Published
Abstract [en]

The vibration velocity of the lateral semicircular canal and the cochlear promontory was measured on 16 subjects with a unilateral middle ear common cavity, using a laser Doppler vibrometer, when the stimulation was by bone conduction (BC). Four stimulation positions were used: three ipsilateral positions and one contralateral position. Masked BC pure tone thresholds were measured with the stimulation at the same four positions. Valid vibration data were obtained at frequencies between 0.3 and 5.0 kHz. Large intersubject variation of the results was found with both methods. The difference in cochlear velocity with BC stimulation at the four positions varied as a function of frequency while the tone thresholds showed a tendency of lower thresholds with stimulation at positions close to the cochlea. The correlation between the vibration velocities of the two measuring sites of the otic capsule was high. Also, relative median data showed similar trends for both vibration and threshold measurements. However, due to the high variability for both vibration and perceptual data, low correlation between the two methods was found at the individual level. The results from this study indicated that human hearing perception from BC sound can be estimated from the measure of cochlear vibrations of the otic capsule. It also showed that vibration measurements of the cochlea in cadaver heads are similar to that measured in live humans.

Place, publisher, year, edition, pages
Elsevier, 2013. Vol. 306, 11-20 p.
Keyword [en]
AC, BAHA, BC, BCI, Bone anchored hearing aid, CSF, HL, LDV, LSCC, MAPP, SD, SNR, TA, air conduction, bone conduction, bone conduction implant, cerebrospinal fluid, dB, decibels, hearing level, laser Doppler vibrometer, lateral semicircular canal, mastoid surface area that attaches to the petrous part of the temporal bone, signal to noise ratio, standard deviation, transcranial attenuation
National Category
Otorhinolaryngology Medical Engineering
Identifiers
URN: urn:nbn:se:liu:diva-98270DOI: 10.1016/j.heares.2013.08.015ISI: 000327578200002PubMedID: 24047594OAI: oai:DiVA.org:liu-98270DiVA: diva2:653885
Note

Funding agencies|Health & Medical Care Committee of the Regional Executive Board, Region Vastra Gotaland||Goteborg Medical Society||VINNOVA: Swedish Governmental Agency for Innovation Systems|2009-00190|

Available from: 2013-10-07 Created: 2013-10-07 Last updated: 2017-12-06Bibliographically approved

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Stenfelt, Stefan

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