The outer ear collects sound vibrations and funnels them into the middle ear. These vibrations are then conducted by the middle ear to the fluid-filled inner ear. There, thousands of hair cells change the mechanical energy of the sound waves into electrical impulses that the brain "hears" as sound.
The outer ear collects and concentrates sound (pressure) waves. Sound waves travel down the ear canal to the eardrum, which separates the outer and middle ears.
The eardrum vibrates in response to sound. As it moves, three tiny ear bones, the ossicles, are set in motion.
The bones of the middle ear vibrate against the snail-shaped cochlea, setting up a traveling wave in the inner ear. Inside the cochlea, hair cells are stimulated by the motion of these waves. They generate electrical impulses that travel to the brain along the auditory nerve.
Within the fluid-filled, snail-shaped cochlea are about 15,000 sensory hair cells. Healthy hair cells generate the electrical impulses the brain needs for hearing. Hair cells are fragile and some die with age. They can also be damaged by head injuries, infections, some drugs, and loud noise.
Anyone can have an ear problem that causes hearing loss. Some people are born with a hearing impairment. For others, hearing loss results from a head injury, ear infection, or exposure to loud noise. Often, it is a part of growing older. Whatever the cause, hearing losses fall into two broad groups. A loss caused by problems in the outer or middle ears is called a conductive hearing loss. A loss resulting from problems in the inner ear or the auditory nerve is known as a sensorineural hearing loss.
When you and our team work together as partners in planning your hearing healthcare, you can get the treatment that’s best for your personal situation.
Allen audioloigsts will make it easy by helping you decide which is the best and most cost effective option for you. See what types of hearing devices Allen Audiology has to offer.
Our audiologists are highly skilled healthcare professionals with graduate degrees and training in the ability to identify, diagnose, treat and monitor hearing disorders. Learn more about our certified audiologists.
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