Deaf since birth, three-year-old Grayson Clamp was born missing his cochlear nerves. Recently, however, Grayson became the first child from the U.S. to receive an experimental auditory brain stem implant. This video shows his reaction upon hearing his dad's voice for the first time. »6/21/13 4:53pm 6/21/13 4:53pm
Kinja is in read-only mode. We are working to restore service.