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A 3-Year Old Hears His Dad's Voice For The First Time

Grayson Clamp was born completely deaf, missing the cochlear nerve that helps the ear process sound to the brain. His parents, Len and Nicole, enrolled him in a research trial at the University of North Carolina after a failed cochlear implant, hoping to find another way to help.

Three weeks ago, he received an auditory brain stem implant where a microchip is implanted in the brain to facilitate sound through tubes from his ears. Grayson is the first child to try such a procedure. 

"It's been phenomenal," his father said whose first words to his son were, "Daddy loves you."