How The Human Ear Works

Posted by Himanshu Tiwari on May 1st, 2018

A human ear has three parts which are outer ear middle ear and inner ear and hearing depend on the sound waves as sound passes in your ear canal. After that, you feel the vibration in your eardrum and tiny bones. Here I explain the working of normal ears or how normal ear works or and what happens if have hearing loss.

Working of normal ear hearing:

  • When sound waves enter your narrow passageway called ear canal that leads to eardrum than you feel the motion.

  • Vibration pass through three connected bones which is malleus, incus, and stapes in the middle ear.

  • Once the motion causes the fluid inside the inner ear and also creates a traveling waveform along the basilar membrane.

  • The hair cell has on the top of a basilar membrane. If it moves up and down thousands of hair cell creating an electrical signal and it converts vibration into nerve impulses.

  • The nerve impulses are carried to the brain and an auditory nerve carries this electrical signal to the brain after that converted sound is what we hear as sounds.

Ear working when a problem with hearing:

In normal hearing, information is passed through different part of the ear to the brain. the outer ear as well middle ear problem lead inefficient transfer of sound and cochlea may not receive enough information. This condition is known as conductive hearing loss and caused due to ear infection and hole in the eardrum.

In an inner ear problems sound arrives at cochlea and not passed to hearing nerve. This condition is known as a sensorineural hearing loss.

 

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Himanshu Tiwari

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Himanshu Tiwari
Joined: April 30th, 2018
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