Macaque facial gestures are more than just a reflex, study finds

Recent advances in brain-computer interfaces have made it possible to more accurately extract speech from neural signals in humans, but language is just one of the tools we use to communicate. “When my young nephew asks for ice cream before dinner and I say ‘no,’ the meaning is entirely dictated by whether the word is punctuated with a smirk or a stern frown,” says Geena Ianni, a neuroscientist at the University of Pennsylvania. That’s why in the future, she thinks, neural prostheses meant for...