ArticleAudiology & neuro-otology2024
Influence of the Intracranial Contents on the Head Motion under Bone Conduction.
Article in Audiology & neuro-otology, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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Who cites it
2 citing papers in PubMed.
- A Novel Water Method for Reducing Air Conduction in Soft Tissue Conduction.Audiology research · 2026Article
- Experimental Framework for the Setup and Validation of Individualized Bone Conduction Hearing Computational Models.Biomimetics (Basel, Switzerland) · 2025Article
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5 authors.
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Abstract
introductionThe mechanism of non-osseous bone conduction pathways, involving the intracranial contents (ICC) of the skull, is still not well understood. This study aimed to investigate the influence of the ICC on the skull bone wave propagation, including dependence on stimulation location and coupling.
methodsThree Thiel-embalmed whole-head cadaver specimens were studied before and after the removal of the ICC. Stimulation was via the electromagnetic actuators from commercial bone conduction hearing aids. Osseous pathways were sequentially activated by mastoid, forehead, and bone-anchored hearing aid location stimulation via a 5-Newton steel headband or percutaneously implanted screw. Non-osseous pathways were activated by stimulation on the eye and dura via a 5-Newton steel headband and a custom-made pneumatic holder, respectively. Under each test condition, the 3D motion of the superior skull bone was monitored at ∼200 points.
resultsThe averaged response of the skull surface showed limited differences due to the removal of the ICC. In some isolated cases, the modal pattern on the skull surface showed a trend for an upshift (∼1/2 octave) in the observed natural frequencies for drained heads. This was also consistent with an observed trend for an upshift in the transition frequency in the estimated deformation across the lateral surfaces of the temporal bones. Such changes were consistent with the expected reduction in mass and damping due to the absence of the ICC.
conclusionOverall, the ICC affect to a limited extent the motion of the skull bone, with a limited trend for a reduction of its natural frequencies.
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