Sound consists of vibrations in the form of waves. The ear is able to pick up these vibrations and convert them into electrical signals that are sent to the brain, and translated into meaningful information, such as language or music.
The ear contains three parts: the outer ear, the middle ear, and the inner ear.
The outer ear is the visible part of the ear. The soft outermost part of the outer ear collects sound waves, which travels down the ear canal into the eardrum.
Sound waves cause the eardrum to vibrate. Vibrations from the ear drum are sent to the middle ear. Small bones in the middle ear, called ossicles, amplify the vibrations and send them to the inner ear.
The cochlea, of the the inner ear, a small organ shaped like a snail, contains tiny cells called hair cells. Hair cells move in response to the vibrations passed from the ossicles.
Movement of the hair cells produces an electrical signal that is conveyed to the brain through the auditory nerve.
Causes of hearing loss