Department of Otorhinolaryngology-Head and Neck, Yonsei University Wonju College of Medicine, 20, Ilsan-ro, Wonju, Gangwon-do, 26426, Republic of Korea.
Research Institute of Hearing Enhancement, Yonsei University Wonju College of Medicine, Wonju, South Korea.
Sci Rep. 2023 May 9;13(1):7479. doi: 10.1038/s41598-023-32307-y.
The study aimed to investigate the efficient pathway for BC sound transmission by measuring vibrations on the opposite side of the skull bone, referred to as the mastoid position. The realistic contralateral transmission pathway of bone conduction (BC) vibrations is investigated through each osseous structure in the midlines of the fresh-frozen whole head. BC stimulation is applied to the mastoid using a bone vibrator, and acceleration responses are observed on the contralateral mastoid bone and seven midline points of skull bones using triaxial accelerometers. The study finds that the range showing the highest contralateral transmission efficiency of bone vibration is the intermediate frequency range with contralateral direction. Within this range, a significant amplitude of acceleration response is measured at the face-side points and the back and upper parts of the head. The thesis suggests that signal transmission from the specific midline to the mastoid can be more efficient than the conventional configuration of BC from the mastoid to the mastoid.
本研究旨在通过测量颅骨另一侧（称为乳突位置）的振动，来研究 BC 声音传输的有效途径。通过对新鲜冷冻整个头部的中线的每个骨结构进行研究，探讨了骨导（BC）振动的现实对侧传输途径。使用骨振动器在乳突处施加 BC 刺激，并使用三轴加速度计在对侧乳突骨和颅骨的七个中线点上观察加速度响应。研究发现，显示骨振动对侧传输效率最高的范围是具有对侧方向的中频范围。在这个范围内，在面部侧点和头部背面和上部测量到了显著的加速度响应幅度。该论文表明，从中线到乳突的信号传输比传统的从乳突到乳突的 BC 配置更有效。
