Cochlear implants can reconnect those with hearing loss to the world of sound. They work differently to hearing aids, which amplify sound. A cochlear implant transforms speech and other sounds into electrical energy that is used to stimulate surviving auditory nerve fibres in the inner ear.
- Speech processor captures then converts sound into a digital signal.
- Digital signal is sent through the external coil to the internal implant.
- Implant converts digital signal into electrical impulses which are sent along the electrode array, which is inserted inside the cochlea.
- Electrodes stimulate the cochlea hearing nerve, bypassing damaged cells, sending impulses to the brain where they are interpreted as sound.