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在声乐和非声乐的青中,听觉敏感度和 tympanic 中耳

Longhui Zhao¹, Meihua Zhang², Yuanyu Qin¹

¹Ministry of Education Key Laboratory for Ecology of Tropical Islands, Key Laboratory of Tropical Animal and Plant Ecology of Hainan Province, College of Life Sciences, Hainan Normal University, Haikou 571158, PR China.

Hearing research

|February 17, 2024

概括

不发声的海南河的听力比其发声的亲戚小河的听力更差. 听觉敏感度的这种差异可能源于他们耳膜和中耳结构的变化.

科学领域:

两动物生物学
听觉神经科学听觉神经科学
进化生物学是进化的生物学.

背景情况:

tympanic 中耳对于陆地听力至关重要.
许多anuran物种已经失去了他们的耳装置,影响了声通信.
之前的研究比较了带膜和没有带膜的物种的听力,但不是突变物种.

研究的目的:

为了比较两个相似的青物种的耳和中耳解剖学:Amolops hainanensis (非声声) 和Amolops torrentis (声声).
评估和比较这两种物种之间的听觉脑干反应 (ABR),以了解听觉敏感性差异.

主要方法:

对带膜和A. hainanensis和A. torrentis中耳的比较解剖分析.
在A. hainanensis中测量听觉脑干响应 (ABRs) 的音调点 (800 Hz7,000 Hz).
将ABR值和延迟时间与A. torrentis.之前发布的数据进行比较.

主要成果:

与A. torrentis相比,A. hainanensis的耳鼓直径相对较小,耳膜差异较小.
这两种物种都有发达的中耳.
比A. torrentis. hainanensis更高的ABR值和更长的延迟在较低的频率比A. torrentis.
峰值听觉灵敏度为A. hainanensis的73dBSPL在3000Hz,而A. torrentis的61dBSPL在1800Hz.

结论:

不发声的A. hainanensis表现出明显低于其发声的姐妹物种A. torrentis.的听觉灵敏度.
这些听觉差异可能与耳膜或内耳形态结构的结构变化有关.
这些发现突出了声调,听力能力和中耳结构之间的关系.

关键词:

阿努伦·阿努伦 (Anuran Anuran) 是一个名字.助听器助听器助听器中耳中间耳朵 tympanic 膜带膜带膜带膜声乐行为声乐行为

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