Suppr超能文献

毛细胞的力产生不会放大或调整鸡基底乳头内的振动。

Hair cell force generation does not amplify or tune vibrations within the chicken basilar papilla.

机构信息

Department of Otolaryngology-Head and Neck Surgery, Stanford University, 801 Welch Road, Stanford, California 94305, USA.

Department of Anorectal Surgery, the First Affiliated hospital of China Medical University, 155 NanjingBei Street, ShenYang, LiaoNing Province 110001, China.

出版信息

Nat Commun. 2016 Oct 31;7:13133. doi: 10.1038/ncomms13133.

Abstract

Frequency tuning within the auditory papilla of most non-mammalian species is electrical, deriving from ion-channel resonance within their sensory hair cells. In contrast, tuning within the mammalian cochlea is mechanical, stemming from active mechanisms within outer hair cells that amplify the basilar membrane travelling wave. Interestingly, hair cells in the avian basilar papilla demonstrate both electrical resonance and force-generation, making it unclear which mechanism creates sharp frequency tuning. Here, we measured sound-induced vibrations within the apical half of the chicken basilar papilla in vivo and found broadly-tuned travelling waves that were not amplified. However, distortion products were found in live but not dead chickens. These findings support the idea that avian hair cells do produce force, but that their effects on vibration are small and do not sharpen tuning. Therefore, frequency tuning within the apical avian basilar papilla is not mechanical, and likely derives from hair cell electrical resonance.

摘要

在大多数非哺乳动物物种的听觉乳头中,频率调谐是电的,源自其感觉毛细胞中的离子通道共振。相比之下,哺乳动物耳蜗中的调谐是机械的,源于外毛细胞中的主动机制,该机制放大基底膜传播波。有趣的是,禽类基底乳头中的毛细胞表现出电共振和力产生,这使得哪种机制产生尖锐的频率调谐尚不清楚。在这里,我们在体内测量了鸡基底乳头的顶端一半中声音引起的振动,发现了广泛调谐的传播波,但没有放大。然而,在活体鸡中发现了失真产物,但在死鸡中没有。这些发现支持了这样一种观点,即禽类毛细胞确实产生力,但它们对振动的影响很小,不会使调谐变尖锐。因此,顶端禽类基底乳头中的频率调谐不是机械的,可能源自毛细胞的电共振。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/cc3d/5095595/251c623daf0f/ncomms13133-f1.jpg

文献AI研究员

20分钟写一篇综述,助力文献阅读效率提升50倍。

立即体验

用中文搜PubMed

大模型驱动的PubMed中文搜索引擎

马上搜索

文档翻译

学术文献翻译模型,支持多种主流文档格式。

立即体验