A new medical procedure has allowed a 3-year-old boy to hear for the first time in his life.
Grayson Clamp is the first child in the U.S. to have an auditory brain stem implant. He was born without a cochlear nerve, which creates a bridge between the auditory portion of the inner ear and the brain and a cochlear implant didn't help him.
His parents decided to try a previously untested method that hadn't been used on any children in the United States - an auditory brain stem implant.
After the procedure, Grayson was able to hear sounds and voices for the first time. A video showing his surprised reaction to hearing his father's voice has gotten a large number of views on YouTube and other social sharing sites.