// The Role of Ear Canal Sound Pressure in Bone Conduction Across Different Bone Conduction Devices
本研究探討外耳道如何影響骨傳導（BC）聽力，測量耳道音壓（ECSP）、耳蝸凸起運動（VPROM）及耳內壓力（PSV）｜以人體屍頭實驗發現，不同骨傳導設備（BCD）與頻率下，ECSP影響顯著不同；黏著型BCD在2 kHz以下及2-3 kHz耳道共振頻率區間呈現較高ECSP｜結果顯示外耳道對骨傳導聽力具頻率依賴性影響，對正常聽力評估較具實用價值，較少影響傳導性聽損患者。
// This study investigated how the outer ear canal pathway contributes to bone conduction (BC) hearing by measuring ear canal sound pressure (ECSP), cochlear promontory motion (VPROM), and intracochlear pressure (PSV) across different bone conduction device (BCD) coupling types. Using human cadaver heads, the researchers found that ECSP's impact varies with frequency and device type, notably showing higher ECSP for adhesive BCDs below 2 kHz and near ear canal resonance (2-3 kHz). The findings suggest the ear canal pathway plays a frequency-dependent role in BC hearing, which is more relevant in normal-hearing assessments than in conductive hearing loss.
Published 2026年5月18日
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