Cartilage conduction is characterized by vibrations of the cartilaginous portion of the ear canal.
Cartilage conduction is characterized by vibrations of the cartilaginous portion of the ear canal.
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DOI：
10.1371/journal.pone.0120135
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发表时间：
2015
期刊：
影响因子：
3.7
通讯作者：
Levitt H
中科院分区：
文献类型：
--
作者：
Nishimura T;Hosoi H;Saito O;Miyamae R;Shimokura R;Yamanaka T;Kitahara T;Levitt H
软骨传导是一种新的声音传递形式，它是通过在耳软骨上放置换能器而产生的。虽然传统的耳蜗声传播方式可分为空气或骨传导(AC或BC)，但先前的研究表明，CC不属于AC或BC(喉镜124：1214-1219)。另一个有趣的问题是，CC是否是AC和BC的混合体。7名听力正常的志愿者参加了这项实验。测量耳道注水后的阈值漂移。在0%、40%和80%的注水条件下，测量了0.5-4 kHz的交流、BC和CC阈值。此外，还测量了20%、60%、100%和溢流水注入条件下的CC阈值。通过阈值漂移来评估软骨部分振动的贡献。对于AC和BC，在0.5~4 kHz频率下，注水引起的阈值漂移分别为22.6~53.3分贝和14.9分贝以内。对于CC，当骨部充满水时，阈值升高到与AC相同的程度。当额外注入水至软骨部时，0.5 kHz和1 kHz的阈值分别显著降低27.4和27.5dB.此外，尽管注入的水堵塞了AC，但强制水平下的CC阈值明显低于BC。软骨部的振动有助于声音的传递，特别是在低频范围内。虽然在BC和CC，空气传播的声音都被辐射到耳道，但它们产生的机制不同。CC在运河中产生空气传播的声音比BC更有效。目前的研究结果表明，CC不是AC和BC的混合体。
Cartilage conduction (CC) is a new form of sound transmission which is induced by a transducer being placed on the aural cartilage. Although the conventional forms of sound transmission to the cochlea are classified into air or bone conduction (AC or BC), previous study demonstrates that CC is not classified into AC or BC (Laryngoscope 124: 1214–1219). Next interesting issue is whether CC is a hybrid of AC and BC. Seven volunteers with normal hearing participated in this experiment. The threshold-shifts by water injection in the ear canal were measured. AC, BC, and CC thresholds at 0.5–4 kHz were measured in the 0%-, 40%-, and 80%-water injection conditions. In addition, CC thresholds were also measured for the 20%-, 60%-, 100%-, and overflowing-water injection conditions. The contributions of the vibrations of the cartilaginous portion were evaluated by the threshold-shifts. For AC and BC, the threshold-shifts by the water injection were 22.6–53.3 dB and within 14.9 dB at the frequency of 0.5–4 kHz, respectively. For CC, when the water was filled within the bony portion, the thresholds were elevated to the same degree as AC. When the water was additionally injected to reach the cartilaginous portion, the thresholds at 0.5 and 1 kHz dramatically decreased by 27.4 and 27.5 dB, respectively. In addition, despite blocking AC by the injected water, the CC thresholds in force level were remarkably lower than those for BC. The vibration of the cartilaginous portion contributes to the sound transmission, particularly in the low frequency range. Although the airborne sound is radiated into the ear canal in both BC and CC, the mechanism underlying its generation is different between them. CC generates airborne sound in the canal more efficiently than BC. The current findings suggest that CC is not a hybrid of AC and BC.
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影响因子：
1.6
作者：
Ito, T.;Roeoesli, C.;Probst, R.
通讯作者：
Probst, R.
影响因子：
2.6
作者：
Nishimura, Tadashi;Hosoi, Hiroshi;Levitt, Harry
通讯作者：
Levitt, Harry
影响因子：
1.7
作者：
Nishimura, Tadashi;Hosoi, Hiroshi;Iwakura, Takashi
通讯作者：
Iwakura, Takashi
DOI：
10.3109/03005368609079025
发表时间：
1986-01-01
期刊：
British Journal of Audiology
影响因子：
--
作者：
LAU C C
通讯作者：
LAU C C
影响因子：
4.7
作者：
Shimokura, Ryota;Hosoi, Hiroshi;Yamanaka, Toshiaki
通讯作者：
Yamanaka, Toshiaki