Auditory brainstem implant gives three-year-old Grayson the gift of hearing

Three-year-old Grayson Clamp has been given the gift of hearing with a revolutionary auditory brainstem implant.
The implant is an electronic device that stimulates nerves in the brain, allowing the child to process sound.
Grayson was born without the cochlear nerves that convey auditory information to the brain. Without these nerves a more common cochlear ear implant was not an option.
The auditory brainstem implant is surgically inserted into the brain near the ear. A microphone device near the ear receives sound and this signal is passed through the implant to a microchip at the brainstem which conveys the information directly to the brain, bypassing the cochlear nerves altogether.
This video shows how the auditory brainstem works.