From Sound Waves to Brain Signals | The Intricate Journey of Hearing Explained
Channel: Body Dynamics + Health & Fitness Tips
Date: 2023-02-07

#ear #hearing #soundwaves #acoustic 
From Sound Waves to Brain Signals | The Intricate Journey of Hearing Explained

Hearing is dependent on a complicated set of procedures that convert sound waves in the air into electrical impulses. These impulses are subsequently carried to the brain via our auditory nerve. Sound waves enter the outer ear and travel through a thin tunnel known as the ear canal to the eardrum. The incoming sound waves cause the eardrum to vibrate, and the vibrations are transmitted to three small bones in the middle ear; the malleus incus and stapes are the names of these bones. 
The middle ear-bones amplify or intensify the vibrations of sound and convey them to the cochlea a snail-shaped structure filled with fluid in the inner ear.  The cochlea is divided into upper and lower parts by an elastic partition that extends from the beginning to the conclusion. This barrier is known as the basilar membrane because it acts as the foundation or ground floor for essential hearing components. 
A traveling wave forms along the basilar membrane after the vibrations force the fluid inside the cochlea to ripple. Hair cells which are sensory cells that sit on top of the basilar membrane ride the wave when this happens chemicals rush into the cells causing an electrical signal to be produced.

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CHAPTERS

0:00 - 0:20: Introduction.
0:20 - 0:40: Journey of Sound Waves.
0:40 - 1:00: Role of Middle Ear Bones and Cochlea.
1:00 - 1:13: Function of Basilar Membrane and Hair Cells.