Newborn infants are supposed to be capable of imitating our facial expressions, like sticking out our tongues and opening our mouths. A new study in Current Biology suggests there’s no actual imitating going on—and that it’s all in our heads.
In 1985, a premature baby was born in Maryland who needed surgery to tie off a dangerous blood vessel near his heart. The newborn, Jeffrey, died weeks after the procedure. His family learned afterwards that none of the procedures had been performed with analgesics; the only drug administered was a muscle relaxant.