Cochlear implants are suitable for patients with a severe to profound sensorineural hearing loss, but what does that mean? To understand this we first need to describe the anatomy of the ear. The ear has three main parts: the outer ear, the middle ear and the inner ear.
Inner hair cells in the cochlea
As mentioned above, hair cells change sound vibrations into electrical signals that are sent to the brain via the hearing nerve. The video below is a demonstration of a hair cell being stimulated by music.
- What is normal hearing and how does it work?
- What are the main parts of the ear?
- What are the types of hearing loss?