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相关概念视频

The Cochlea01:13

The Cochlea

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The cochlea is a coiled structure in the inner ear that contains hair cells—the sensory receptors of the auditory system. Sound waves are transmitted to the cochlea by small bones attached to the eardrum called the ossicles, which vibrate the oval window that leads to the inner ear. This causes fluid in the chambers of the cochlea to move, vibrating the basilar membrane.
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Convergent Evolution01:54

Convergent Evolution

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Evolution shapes the features of organisms over time, ensuring that they are suited for the environments in which they live. Sometimes, selection pressure leads to the rise of similar but unrelated adaptations in organisms with no recent common ancestors, a process known as convergent evolution.
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Echo01:06

Echo

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The human ear cannot distinguish between two sources of sound if they happen to reach within a specific time interval, typically 0.1 seconds apart. More than this, and they are perceived as separate sources.
Imagine the sound is reflected back to the ears. Assuming that the source is very close to the human, the difference between hearing the two sounds—the emitted sound and the reflected sound—may be more than the minimum time for perceiving distinct sounds. If this is the case,...
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相关实验视频

Updated: May 4, 2026

A Lightweight, Headphones-based System for Manipulating Auditory Feedback in Songbirds
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A Lightweight, Headphones-based System for Manipulating Auditory Feedback in Songbirds

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在古代蝙蝠中推断回声定位.

Nancy B Simmons1, Kevin L Seymour, Jörg Habersetzer

  • 1American Museum of Natural History, Central Park West at 79th Street, New York, New York 10024, USA. simmons@amnh.org

Nature
|August 21, 2010
PubMed
概括
此摘要是机器生成的。

化石蝙蝠Onychonycteris finneyi可能没有使用喉回声定位. 重新检查其风 - tympanic 关节表明,这个原始的蝙蝠缺乏生物声波所需的解剖学.

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相关实验视频

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科学领域:

  • 古生物学的古生物学
  • 进化生物学 进化生物学
  • 比较解剖学的比较.

背景情况:

  • 喉回声定位是蝙蝠的一个关键进化创新,使其能够实现复杂的感官感知和捕食.
  • 识别化石蝙蝠中回声定位的骨质相关物对于理解它们的行为和进化至关重要.
  • 风-带关节被认为是蝙蝠回声定位能力的可靠指标.

研究的目的:

  • 重新评估有关Onychonycteris finneyi. tympanic关节的化石数据的解释.
  • 为了确定Onychonycteris finneyi是否具有用于喉回声定位所必需的解剖结构.

主要方法:

  • 在化石蝙蝠Onychonycteris finneyi.yi.中分析造型骨及其与耳骨的关节.
  • 与现存和化石蝙蝠物种的回声定位相关的骨质特征的比较检查.

主要成果:

  • 这项研究质疑Onychonycteris finneyi.在Onychonycteris finneyi.在Onychonycteris finneyi.在Onychonycteris finneyi.在Onychonycteris finneyi.在Onychonycteris finneyi.在Onychonycteris finneyi.在Onychonycteris finneyi.在Onychonycteris finneyi.在Onychonycteris finneyi.在Onychonycteris finneyi.在Onychonycteris finneyi.在Onychonycteris finneyi.在Onychonycteris finneyi.
  • 对化石证据的重新解释表明,拟议的接并不能清楚地辨认或存在.

结论:

  • 尽管Onychonycteris finneyi处于原始状态,但很可能缺乏喉回声定位的能力.
  • 这种关键表达的缺失挑战了关于早期蝙蝠感官能力和进化的先前假设.