ArticleJournal of the Association for Research in Otolaryngology : JARO2026
Correlation of Promontory Vibration and Sound Emission Recorded from the Skin Surface in Bone Conduction Stimulation.
Article in Journal of the Association for Research in Otolaryngology : JARO, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
purposeSound pressure recordings at different positions at the head such as ear canal, nasal cavity, or on the skin are effective tools to verify, fit, or follow up the output of bone conduction devices (BCDs) intra- and post-operatively. Here, we investigated the possibility of using a surface microphone (SM) as a non-invasive alternative to laser Doppler vibrometry (LDV) measuring cochlear promontory (CP) vibrations in human heads.
methodsA percutaneous BCD (Ponto system) was implanted at the standard position in five human (four males/one female) cadaver heads (ten ears). CP vibration was measured using LDV in response to the BCD stimulation. Simultaneously, the sound pressure level (SPL) emitted by the skin was measured by the SM attached to the forehead of the specimens. A linear regression model estimated the vibration amplitudes based on the measured SPL.
resultsA frequency-independent linear regression between recorded SM SPL and CP velocity showed a significant correlation (slope = 1.012; r
conclusionMicrophone-based recording of acoustic surface emissions offers a non-invasive alternative to LDV to assess BCD output.
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