Text Box: 							Hearing Loss and Cochlear Implants
					       Before you can fully understand how cochlear
					      implants work, itís helpful to first have a basic
					     understanding of how normal hearing works:
										
							The outer ear collects sound waves that pass through the air.
											
``						               The sound waves vibrate the eardrum and the three tiny bones 
					   (hammer, anvil, and stirrup) in the middle ear.

					 		This vibration moves the tiny hairs of the sensory cells in the 
                                                                                              inner ear or cochlea; sensory cells convert the vibrations to an
                                                                          electrical signal that is sent to the hearing nerve.
							
							The signal travels up the nerve and into the brain, where it is 
		           interpreted as sound.
Text Box: The Normal Hearing Process
When any part of this delicate system is damaged, hearing loss can result. 

For adults, hearing loss, whether sudden or progressive, can cause frustration, isolation, even depression. It can do the same to a child, as well as impact the ability to learn and speak, causing the child to fall behind in his or her development. But for people of all ages, cochlear implants may help end the isolation from hearing loss by bringing the world of sound back into his or her life.

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In this cross-section of the cochlea you can see how
the bones in the middle ear (far right) vibrate the tiny
hairs of the sensory cells in the inner ear (center).
These vibrations are then converted to an electrical signal
that is sent through the hearing nerve to the brain (far left).