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| 豚鼠耳蜗基底膜的振动特性 | |
| 引用本文： | 塔娜,许立富,饶柱石,黄新生,周雷. 豚鼠耳蜗基底膜的振动特性[J]. 上海交通大学学报, 2016, 50(2): 200-203 |
| 作者姓名： | 塔娜 许立富 饶柱石 黄新生 周雷 |
| 作者单位： | 塔娜1，许立富1，饶柱石1，黄新生2，周雷2(1. 上海交通大学 振动、冲击、噪声研究所， 机械系统与振动国家重点试验室， 上海 200240；2. 复旦大学 附属中山医院耳鼻喉科， 上海 200032) |
| 基金项目： | 国家自然科学基金项目（11072145, 81170910）,上海市科学技术委员会项目（114119a6500）资助 |
| 摘 要： | 为探讨豚鼠耳蜗基底膜的听觉机制,利用多普勒激光测振技术进行了声音在28只成年健康豚鼠耳中传递的测试实验.将豚鼠麻醉后切断头取出听泡,采用电钻暴露其耳蜗基底膜,利用多普勒激光测振仪在给定的声压级、频率的纯音激励条件下测量豚鼠外耳道耳蜗基底膜的振动速度,并测量了中耳镫骨的振动速度.结果表明,豚鼠外耳道基底膜具有频率选择特性,而且其基底膜的振动具有行波特性. |
| 关 键 词： | 豚鼠 镫骨 耳蜗 多普勒激光 听觉机制 振动特性 |
| 收稿时间： | 2014-12-19 |
Vibration Characteristics of Cochlear Basilar Membrane in Guinea Pig |
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| TA Na,XU Lifu,RAO Zhushi,HUANG Xinsheng,ZHOU Lei. Vibration Characteristics of Cochlear Basilar Membrane in Guinea Pig[J]. Journal of Shanghai Jiaotong University, 2016, 50(2): 200-203 | |
| Authors: | TA Na XU Lifu RAO Zhushi HUANG Xinsheng ZHOU Lei |
| Affiliation: | (1. Institute of Vibration, Shock and Noise, State Key Laboratory of Mechanical System and Vibration, Shanghai Jiaotong University, Shanghai 200240, China；2. Department of Ear Nose Throat, Zhongshan Hospital, Fudan University, Shanghai 200032, China) |
| Abstract: | Abstract： In order to study the auditory mechanism of the guniea pig cochlea, the stapes footplate (SF) and basilar membrane (BM) velocity responses to pure tone were measured using a laser Doppler velocimetry which was able to measure sub nanometer vibration from the middle ear and cochlea of the guinea pig. The BM velocity was measured by a reflective microbeads placed onto the scala tympani surface of the BM. The velocity response of the SF was also tested, allowing the calculation of a BM transfer function. The transfer function shows typical tuning features. For a given BM location, the characteristic frequency (CF) of the BM was about 11 kHz. The results show that frequency selectivity and travelling wave exist in the BM. |
| Keywords: | Key words： guinea pig stapes cochlea Doppler laser auditory mechanism； vibration characteristics |
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