You are currently viewing The process and way in which the human ear hears the sound

The process and way in which the human ear hears the sound

Animals can find food based on sound signals, escape from predators, carry out spouses and feed offspring. Human beings can communicate with each other through language and voice, exchange ideas and live together. Listening to sound is important for both animals and humans, and the ear is the auditory organ that receives sound stimulation.

How do we hear the sound? Use the ear!

Ear structure

  

The human ear is mainly divided into three parts, the outer ear, the middle ear and the inner ear.

  外耳—包括日常我们所看到的耳廓,和外耳道;很多人认为这些就是耳朵的全部分,其实这并非事实。

  中耳—鼓膜是中耳的一部分,我们可以通过电耳镜看得到,把外耳与中耳划分开;鼓膜背后还有锤骨,砧骨和镫骨组成的听骨链;咽鼓管,鼓室等;这些部分正常时候是电耳镜所不能看到的。

  内耳—包括耳蜗,前庭与半规管。听神经与耳蜗的内毛与外毛细胞相连接。

Sound wave transmission in normal ears

  

  声音—被耳廓收集—经外耳道—到达鼓膜—引起听骨链的机械运动—镫骨底板的振动引起前庭窗的运动—能量传入了耳蜗中的内外淋巴液,变成液体振动—基底膜上的毛细胞运动产生生物电活动—神经冲动通过听神经,延上传神经通路—到达听皮层中枢—听觉产生。

Sound wave transmission when the tympanic membrane is perforated

  

When the tympanic membrane is perforated, the ossicular chain is interrupted or fixed, and other diseases are not clear, the normal sound wave transmission path is disconnected, forming a conductive sputum; a louder sound is required to be heard.

  此时的声波传输路径是:声音—耳廓—外耳道—鼓室—耳蜗的圆窗膜振动—引起内外淋巴液振动—往后的传输路径与正常耳朵中的传输是一致的。鼓膜与听骨链均没有参与声波传输过程。

  

The above sound wave transmission belongs to the air conduction mechanism; however, the sound wave conducts more than one path, and it can also conduct through the bone.

Bone conduction

 Listening knowledge

When you hold your ears or wear earplugs, you can still hear your own voice and some outside sounds. How is the sound heard by us?

  此时的声音是通过第二个方法—颅骨传导的,路径是:声波—颅骨振动—耳蜗的淋巴液振动—往后的传输路径与空气传导是一致的。它对声音的传输不需要外耳与中耳的参与。

summary:

  人耳

The human ear is not only sensitive to weak sounds, but also able to feel strong sounds; they are both very sensitive microphones and function as sound wave analyzers.

The generation of hearing is a very complicated physiological process. The inner ear (cochlea) has a very important part of the feeling and transduction of sound. The perception and preliminary analysis of sound mainly depends on the function of the inner auditory receptor device; the central nervous system plays an important role in the sound discrimination process.

Jinghao medical hearing aid reminder: hearing aids need to be professionally “fitted”, it is very important to choose a professional hearing aid fitting center and hearing aid fittings! All patients and friends have any hearing problems can call the Jinghao medical consultation, or personally Come to the fitting center experience. Hearing aid free consultation phone: +86-18566295705

You can also scan our WeChat public account for more information about hearing.

Link:The process and way in which the human ear hears the sound

REF: Bluetooth Hearing AidsHearing Aids TypesDigital Hearing Aids
The article comes from the Internet. If there is any infringement, please contact [email protected] to delete it.

Leave a Reply