It was a medical first.
Grayson Clamp is almost like any other three year old. Active, curious, learning, busy being a little boy.
But there was one big difference. Grayson was born without a cochlear nerve, he was deaf.
The key word here is "was."
Little Grayson was the first person the US to ever have an auditory brain stem implant. Now, he can hear.
Watch the video below as Grayson hears his father’s voice for the first time.
CNN reports the surgery is available for adults as well.
WARNING: The video contains months from the surgery, there is blood.