What you need to know about cochlear implants
Considering a cochlear implant but not sure what it’s all about? Here are the answers to some commonly asked questions.
What is a cochlear implant?
A cochlear implant is a surgically implanted medical device that replaces the function of the damaged inner ear. Unlike a hearing aid which makes sounds louder, a cochlear implant provides stimulation directly to the auditory nerve. However, like a hearing aid, an implant does not mean your hearing will be “restored” but it will allow you to perceive and hear sounds.
How do they work?
One of the main causes of hearing loss is due to damage to the hair cells in their inner ear (the cochlea). A cochlear implant does the work of the damaged cochlear: it captures the sound from outside environment, processes it and then transmits small electrical currents to the auditory nerve. The nerve then sends a signal, which is interpreted as sound, to the brain.
The cochlear implant is made up of both internal and external parts. The internal part is put in place surgically while the external part is worn behind the ear, similar to a hearing aid.
Who can they help?
Cochlear implants are designed to help those who have moderate to profound sensorineural hearing loss, and who found little or no benefit from hearing aids.
What are the cons?
It’s important to remember that while a cochlear implant attempts to mimic natural hearing, the result is not the same as normal hearing. However, many adults with cochlear implants say that they hear better with a cochlear implant than with a hearing aid. Results of cochlear implants can vary though depending on the severity and length of hearing loss as well as the condition of the cochlea.