A child with congenital hearing loss is brought for cochlear implantation. For the implantation, the following structure should be intact:
Cochlear implants are neural prostheses that conve sound energy to electrical signals and can be used to stimulate the auditory division of the eighth nerve directly. Successful cochlear implantation requires an intact and functional auditory processing pathway, from spiral ganglion cells to the auditory coex.
Outer hair cell
Inner hair cell
Spiral ganglion cell
Auditory nerve