Transmission of bone conducted sound - Correlation between hearing perception and cochlear vibration
Artikel i vetenskaplig tidskrift, 2013

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.

Benledningsfysiologi

Författare

Måns Eeg-Olofsson

Göteborgs universitet

Stefan Stenfelt

Linköpings universitet

Hamidreza Taghavi

Chalmers, Signaler och system, Signalbehandling och medicinsk teknik, Medicinska signaler och system

Sabine Reinfeldt

Chalmers, Signaler och system, Signalbehandling och medicinsk teknik, Medicinska signaler och system

Bo Håkansson

Chalmers, Signaler och system, Signalbehandling och medicinsk teknik, Medicinska signaler och system

Tomas Tengstrand

Sahlgrenska universitetssjukhuset

Caterina Finizia

Göteborgs universitet

Hearing research

1878-5891 (eISSN)

Vol. 306 11-20

Ämneskategorier

Klinisk medicin

Medicinteknik

Oto-rhino-laryngologi

Medicinsk apparatteknik

DOI

10.1016/j.heares.2013.08.015

PubMed

24047594