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Transmission of bone conducted sound – Correlation between hearing perception and cochlear vibration
Sahlgrenska University Hospital, Göteborg University, Sweden.
Linköpings universitet, Institutionen för klinisk och experimentell medicin, Teknisk audiologi. Linköpings universitet, Hälsouniversitetet.ORCID-id: 0000-0003-3350-8997
Chalmers University of Technology, Göteborg, Sweden.
Chalmers University of Technology, Göteborg, Sweden.
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2013 (Engelska)Ingår i: Hearing Research, ISSN 0378-5955, E-ISSN 1878-5891, Vol. 306, s. 11-20Artikel i tidskrift (Refereegranskat) 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.

Ort, förlag, år, upplaga, sidor
Elsevier, 2013. Vol. 306, s. 11-20
Nyckelord [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
Nationell ämneskategori
Oto-rino-laryngologi Medicinteknik
Identifikatorer
URN: urn:nbn:se:liu:diva-98270DOI: 10.1016/j.heares.2013.08.015ISI: 000327578200002PubMedID: 24047594OAI: oai:DiVA.org:liu-98270DiVA, id: diva2:653885
Anmärkning

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|

Tillgänglig från: 2013-10-07 Skapad: 2013-10-07 Senast uppdaterad: 2017-12-06Bibliografiskt granskad

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Stenfelt, Stefan
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Teknisk audiologiHälsouniversitetet
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Hearing Research
Oto-rino-laryngologiMedicinteknik

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