Leg Nerves Activated by Light Offer New Path to Restoring Mobility

“For the first time, MIT researchers have shown that nerves made to express proteins that can be activated by light can produce limb movements that can be adjusted in real-time, using cues generated by the motion of the limb itself. The technique leads to movement that is smoother and less fatiguing than similar electrical systems that are sometimes used to stimulate nerves in spinal cord injury patients and others…”

https://www.ecnmag.com/news/2019/01/leg-nerves-activated-light-offer-new-path-restoring-mobility