Deafness caused by a disorder in the auditory nerves or the brain centres which receive impulses from the nerves.
Deafness due to defective function of the cochlea or acoustic nerve.
A form of hearing impairment arises from the incapacity to convert sound vibrations into electrical signals. This condition frequently encompasses abnormalities in the functioning of the hair cells in the cochlea.
A form of hearing impairment stemming from issues involving either the inner ear, the nerves linking the inner ear to the brain, or the auditory region of the brain itself.