Otoacoustic emissions from insect ears having just one auditory neuron
Otoacoustic emissions from insect ears having just one auditory neuron
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仅具有一个听觉神经元的昆虫耳朵的耳声发射
DOI：
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发表时间：
2007
期刊：
影响因子：
--
通讯作者：
W. Nässig
中科院分区：
文献类型：
--
作者：
M. Kössl;F. Coro;E. Seyfarth;W. Nässig
敏感的听觉器官通常采用非线性机械声音处理，其产生失真产物耳声发射。昆虫的鼓膜器官也记录到这种发射。在这里，我们报告的高频失真产品的排放，诱发的刺激频率高达95 kHz，从一个notodontid蛾，Ptilodon cucullina，其中只包含一个单一的听觉感受器神经元的鼓膜器官。2f 1-f2失真产物发射达到40 dB SPL以上的声级。大多数发射增长函数在60和70 dB SPL之间的刺激水平下显示出20 dB深度的显著凹口（n = 20次试验），伴随着119°的平均相移，这将低电平分量和高电平分量分开。该排放物易受乙醚的局部应用的影响，乙醚使生长功能向更高的刺激水平转移约20 dB。对于哺乳动物的耳蜗，Lukashkin和他的同事们提出，非线性放大的不同水平依赖成分不一定需要几个细胞源的相互作用，但可能是由于一个单一的非线性源。在背齿类中，这种生理上脆弱的来源可能是单一的受体细胞。辅助细胞对耳蜗听觉器官非线性特性的潜在贡献尚不清楚。
Sensitive hearing organs often employ nonlinear mechanical sound processing which produces distortion-product otoacoustic emissions. Such emissions are also recorded from insect tympanal organs. Here we report high frequency distortion-product emissions, evoked by stimulus frequencies up to 95 kHz, from the tympanal organ of a notodontid moth, Ptilodon cucullina, which contains only a single auditory receptor neuron. The 2f1–f2 distortion-product emission reaches sound levels above 40 dB SPL. Most emission growth functions show a prominent notch of 20 dB depth (n = 20 trials), accompanied by an average phase shift of 119°, at stimulus levels between 60 and 70 dB SPL, which separates a low- and a high-level component. The emissions are vulnerable to topical application of ethyl ether which shifts growth functions by about 20 dB towards higher stimulus levels. For the mammalian cochlea, Lukashkin and colleagues have proposed that distinct level-dependent components of nonlinear amplification do not necessarily require interaction of several cellular sources but could be due to a single nonlinear source. In notodontids, such a physiologically vulnerable source could be the single receptor cell. Potential contributions from accessory cells to the nonlinear properties of the scolopidial hearing organ are still unclear.
成人和新生儿的畸变产物耳声发射 (2f1-f2) 振幅增长。
DOI：
10.1121/1.428315
发表时间：
2000
期刊：
The Journal of the Acoustical Society of America
影响因子：
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作者：
Abdala,C
通讯作者：
Abdala,C
DOI：
10.1121/1.415857
发表时间：
1996
期刊：
The Journal of the Acoustical Society of America
影响因子：
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作者：
Mills,DM;Rubel,EW
通讯作者：
Rubel,EW