Cambridge researchers created miniature brain-and-spinal-cord systems in the lab that can send signals and even trigger tiny muscle contractions. They discovered that human neurons gradually lose ...

Bionic arms are beginning to tap into nerve signals that linger long after a limb is gone, turning the ghost of movement into real, controllable action. Instead of relying on crude muscle twitches or ...

The fastest electrical signals in the human body can travel at up to 120 meters per second, roughly 268 miles per hour, along the thickest myelinated nerve fibers. That speed, recorded in large motor ...