Sound waves enter the ear and are converted into electrical impulses that “travel” to the brain where they are converted and interpreted.
1 – The incoming sound waves are picked up by the external ear and channeled into the ear canal.
2 – Sound waves cause the eardrum to vibrate.
3 – The vibrations are amplified by a chain of small bones, the ossicles (hammer, stirrup and anvil), and transmitted to the “oval window” on the cochlea. (continues below the image)
4 – Once in the cochlea, the vibrations induce the movement of tiny nerve ends (stereocilia).
5 – Stereocilia convert movements into electrical signals.
6 – The electrical signals travel along the acoustic nerve until they reach the auditory cortex, in the brain. Sound waves cause the eardrum to vibrate.
June 24, 2022 | 10:41
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