関連する実験動画

Updated: Sep 27, 2026

Physiological Preparation of Hair Cells from the Sacculus of the American Bullfrog (Rana catesbeiana)
12:07

Physiological Preparation of Hair Cells from the Sacculus of the American Bullfrog (Rana catesbeiana)

Published on: March 17, 2017

聴覚の細胞基盤:毛細胞の生体物理学

A J Hudspeth

    Science (New York, N.Y.)
    |November 15, 1985
    PubMed
    まとめ

    機械的刺激は,内耳の毛細胞によって電気信号に変換されます. このプロセスは,髪の束の動きに反応してイオンチャネルの開きを伴うもので,周波数選択聴覚を可能にします.

    さらに関連する動画

    Dextran Labeling and Uptake in Live and Functional Murine Cochlear Hair Cells05:55

    Dextran Labeling and Uptake in Live and Functional Murine Cochlear Hair Cells

    Published on: February 8, 2020

    In Ovo and Ex Ovo Methods to Study Avian Inner Ear Development10:09

    In Ovo and Ex Ovo Methods to Study Avian Inner Ear Development

    Published on: June 16, 2022

    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.
    Unrenewable Cells00:50

    Unrenewable Cells

    In humans, the photoreceptor cells of the eye and sensory hair cells of the ear lack stem cells. These cells are thus unrenewable and cannot be replaced when they are damaged or destroyed.
    Photoreceptors
    The retina is composed of several layers and contains specialized cells called photoreceptors. The photoreceptors (rods and cones) change their membrane potential when stimulated by light energy. There are two types of photoreceptors—rods and cones—which differ in the shape of their outer...
    Anatomy of the Ear01:16

    Anatomy of the Ear

    Auditory sensation, commonly called hearing, involves the transformation of sonic waves into neural impulses facilitated by the structures of the auditory organ. The prominent, flesh-like structure on the side of the head, called the auricle, directs sound waves towards the auditory canal. The auricle is often mislabeled as the pinna, a term more aligned with mobile structures like a feline's external ear. The auditory canal penetrates the cranium via the external auditory meatus of the...
    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...