Video of a baby hearing for the first time. Reaction time: 0. (chuckle)
Makes me smile, because one of my good friends in high school is deaf and has implants. When her daughter was born, she didn’t react to sound and they had to do testing to see (in her words) “if she’s deaf like mommy or just stubborn like daddy.” Turns out, she was just ignoring everyone.
(H/T Uncle)