高频下外毛细胞有效性的多种运动模式
Multiple Modes of Motion for the Effectiveness of Outer Hair Cells at High Frequencies
AI总结：
本文研究了外毛细胞在高频下通过多种运动模式克服阻抗不匹配，提升耳的灵敏度和频率选择性。
摘要：
外毛细胞（OHCs）对哺乳动物耳的灵敏度和频率特异性至关重要。为了执行这一功能，OHCs需要放大基底膜（BM）的运动，而基底膜比自身更僵硬。如果OHCs和BM是单个振荡器的组成部分，这种阻抗不匹配会严重限制OHCs的有效性。然而，耳石器官的复杂结构可以支持多种运动模式。本文通过研究两个耦合振荡器的系统作为具有多种运动模式的系统的最简单模型，发现某些模型系统在特定条件下，OHC可以作为有效的放大器，克服阻抗不匹配。本文的分析表明，多种运动模式的存在是哺乳动物耳精细性能的关键。
英文摘要：
Outer hair cells (OHCs) are essential for the sensitivity and frequency specificity of the mammalian ear. To perform this function, OHCs need to amplify the motion of the basilar membrane (BM), which is much stiffer than themselves. If OHCs and the BM are components of a single oscillator, this impedance mismatch seriously limits the effectiveness of OHCs. However, the elaborated structure of the organ of Corti can support multiple modes motion. Here, systems of two coupled oscillators are examined as the simplest models of the system with multiple modes of motion. It is found that some of these model systems have conditions, under which an OHC can function as an effective amplifier, overcoming the impedance mismatch. The present examination suggests that the presence of multiple modes of motion is a key to the exquisite performance of the mammalian ear.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
