A mechanoelectrical mechanism for detection of sound envelopes in the hearing organ.
A mechanoelectrical mechanism for detection of sound envelopes in the hearing organ.
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DOI：
10.1038/s41467-018-06725-w
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发表时间：
2018-10-09
影响因子：
16.6
通讯作者：
Fridberger A
中科院分区：
文献类型：
--
作者：
Nuttall AL;Ricci AJ;Burwood G;Harte JM;Stenfelt S;Cayé-Thomasen P;Ren T;Ramamoorthy S;Zhang Y;Wilson T;Lunner T;Moore BCJ;Fridberger A
为了理解语音，声学刺激的缓慢变化的轮廓或包络被用来区分单词。关于包络的少量信息足以用于语音识别，但是听觉系统用于提取包络的机制尚不清楚。已经提出了几种不同的理论，包括听觉神经树突的包络检测以及涉及感觉毛细胞的各种机制。我们使用人类和动物内耳的录音来表明，包络检测的主要机制是由机电转导通道引入的失真。这种电失真在声音诱发的基底膜振动中并不明显，它跟踪包络，刺激听觉神经，并将关于包络形状的信息传递给大脑。声音包络对语音感知很重要。在这里，作者研究了声音包络编码的机制，发现它是由机械电转导通道产生的失真引起的。令人惊讶的是，信封是不存在于基底膜振动。
To understand speech, the slowly varying outline, or envelope, of the acoustic stimulus is used to distinguish words. A small amount of information about the envelope is sufficient for speech recognition, but the mechanism used by the auditory system to extract the envelope is not known. Several different theories have been proposed, including envelope detection by auditory nerve dendrites as well as various mechanisms involving the sensory hair cells. We used recordings from human and animal inner ears to show that the dominant mechanism for envelope detection is distortion introduced by mechanoelectrical transduction channels. This electrical distortion, which is not apparent in the sound-evoked vibrations of the basilar membrane, tracks the envelope, excites the auditory nerve, and transmits information about the shape of the envelope to the brain. The sound envelope is important for speech perception. Here, the authors look at mechanisms by which the sound envelope is encoded, finding that it arises from distortion produced by mechanoelectrical transduction channels. Surprisingly, the envelope is not present in basilar membrane vibrations.
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影响因子：
5.3
作者：
Fridberger, A;de Monvel, JB;Nuttall, A
通讯作者：
Nuttall, A
影响因子：
2.5
作者：
Cooper, NP;Rhode, WS
通讯作者：
Rhode, WS
影响因子：
6.7
作者：
Kemp, DT
通讯作者：
Kemp, DT
影响因子：
2.5
作者：
Abel, Cornelius;Koessl, Manfred
通讯作者：
Koessl, Manfred
DOI：
10.1073/pnas.0610185103
发表时间：
2007-01-30
影响因子：
11.1
作者：
Dalhoff, E.;Turcanu, D.;Gummer, A. W.
通讯作者：
Gummer, A. W.