Transmission of bone conducted sound - Correlation between hearing perception and cochlear vibration
Journal article, 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.



Måns Eeg-Olofsson

University of Gothenburg

Stefan Stenfelt

Linköping University

Hamidreza Taghavi

Chalmers, Signals and Systems, Signal Processing and Biomedical Engineering

Sabine Reinfeldt

Chalmers, Signals and Systems, Signal Processing and Biomedical Engineering

Bo Håkansson

Chalmers, Signals and Systems, Signal Processing and Biomedical Engineering

Tomas Tengstrand

Sahlgrenska University Hospital

Caterina Finizia

University of Gothenburg

Hearing research

1878-5891 (eISSN)

Vol. 306 11-20

Subject Categories

Clinical Medicine

Medical Engineering


Medical Equipment Engineering





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