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関連する概念動画

Hearing01:31

Hearing

When we hear a sound, our nervous system is detecting sound waves—pressure waves of mechanical energy traveling through a medium. The frequency of the wave is perceived as pitch, while the amplitude is perceived as loudness.
Hair Cells01:22

Hair Cells

Hair cells are the sensory receptors of the auditory system—they transduce mechanical sound waves into electrical energy that the nervous system can understand. Hair cells are located in the organ of Corti within the cochlea of the inner ear, between the basilar and tectorial membranes. The actual sensory receptors are called inner hair cells. The outer hair cells serve other functions, such as sound amplification in the cochlea, and are not discussed in detail here.
The Cochlea01:13

The Cochlea

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.
Communication01:03

Communication

Communication between two animals occurs when one animal transmits an information signal that causes a change in the animal that receives the information. Organisms communicate with one another in a host of different ways. Signals can be auditory, chemical, visual, tactile, or a combination of these. Communication is a critical behavioral adaptation that promotes survival, growth, and reproduction.
Fixed Action Patterns01:06

Fixed Action Patterns

A fixed action pattern (FAP) is a specific, hard-wired sequence of behaviors that occurs in response to an external stimulus, called a sign stimulus. The behavior is “fixed” because it is essentially unchangeable—proceeding similarly across individuals of a species every time it occurs.
Auditory Pathway01:15

Auditory Pathway

Auditory pathways constitute the complex neural circuits responsible for transmitting and interpreting auditory information from the peripheral auditory system to the brain. Sound waves are initially captured by the outer ear, funneled through the ear canal, and reach the tympanic membrane (eardrum). These vibrations are transmitted via the middle ear's ossicles to the inner ear's cochlea.
When viewed cross-sectionally, the cochlea reveals the scala vestibuli and scala tympani flanking the...

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Updated: Jun 21, 2026

A Lightweight, Headphones-based System for Manipulating Auditory Feedback in Songbirds
10:13

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

Published on: November 26, 2012

イルカの発声メカニズム

R S Mackay, H M Liaw

    Science (New York, N.Y.)
    |May 8, 1981
    PubMed
    まとめ
    この要約は機械生成です。

    人とは異なり,イルカは鼻塞の組織の振動を使用して水中の音を発生します. 空気袋は,これらの深海の声の貯蔵庫として機能し,複雑なコミュニケーションを可能にします.

    さらに関連する動画

    Recording Mouse Ultrasonic Vocalizations to Evaluate Social Communication
    10:28

    Recording Mouse Ultrasonic Vocalizations to Evaluate Social Communication

    Published on: June 5, 2016

    Eliciting and Analyzing Male Mouse Ultrasonic Vocalization (USV) Songs
    08:44

    Eliciting and Analyzing Male Mouse Ultrasonic Vocalization (USV) Songs

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    Last Updated: Jun 21, 2026

    A Lightweight, Headphones-based System for Manipulating Auditory Feedback in Songbirds
    10:13

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

    Published on: November 26, 2012

    Recording Mouse Ultrasonic Vocalizations to Evaluate Social Communication
    10:28

    Recording Mouse Ultrasonic Vocalizations to Evaluate Social Communication

    Published on: June 5, 2016

    Eliciting and Analyzing Male Mouse Ultrasonic Vocalization (USV) Songs
    08:44

    Eliciting and Analyzing Male Mouse Ultrasonic Vocalization (USV) Songs

    Published on: May 9, 2017

    科学分野:

    • マリン・バイオロジーの海洋生物学
    • バイオアコースティクス バイオアコースティクス
    • 哺乳類生理学 哺乳類生理学

    背景:

    • 人間は,水中20メートル以上の深さで音を出すのに苦労します.
    • イルカは,深海の環境に特有の発声メカニズムを持っています.
    • 鯨類の音声生成を理解することは,海洋哺乳類の研究にとって極めて重要です.

    研究 の 目的:

    • イルカの音声生成のメカニズムを深部で調査する.
    • イルカにおける喉と非喉の音の発生を区別するために.
    • イルカの発声における空気袋の役割を理解するために.

    主な方法:

    • 非侵襲的超音波画像は,Tursiops truncatusとDelphinus delphisを研究するために使用されました.
    • 空気袋の動きは,音の生成に対する反応として分析された.
    • 発声メカニズムを調べ,喉頭と鼻のプラグの役割を区別しました.

    主要な成果:

    • クリックやブズを含むイルカの音は,鼻塞の組織が振動することで発生します.
    • 喉は,これらの特定のイルカの音を出すことに関与しません.
    • イルカの空気袋は,発声の際に重要な貯蔵庫として機能します.

    結論:

    • イルカは,水中音を発する特殊なメカニズムを進化させた.
    • 鼻塞の振動と空気袋貯蔵庫は,イルカのバイオアコースティックスの鍵です.
    • この研究は,海洋哺乳類の独特の音を発する戦略を明らかにしています.