A little boy who has been deaf since birth can now hear thanks to a special device.
three-year-old Grayson Clamp was born without the auditory nerves that carry sound from the inner ear to the brain.
Watch his reaction when he hears his father’s voice for the first time.
An auditory brain stem implant is now approved for trials with children.
Grayson became the first in the country to undergo the procedure.
Doctors are confident Grayson will eventually be able to hear and speak.