脑植入装置让瘫痪者同时说话与做手势

A BRAIN implant has enabled people with paralysis to speak while gesturing, such as nodding or waving. These sorts of exchanges, done via an avatar, could help them communicate with more nuance. Experimental brain implants have boosted the ability to either speak or move among people with paralysis, but attempts to do both simultaneously haven’t been very successful. To achieve this, implants need to cover a large part of the sensorimotor cortex, a brain region involved in speech and movement, says Samantha Brosler at the University of California, San Francisco. Brosler and her colleagues tested an iPhone-sized implant in this part of the brain in two people with paralysis. …