Help for Paralyzed Limbs
Researchers at University College London have developed Active Book, an implantable chip that sends electrical impulses to help exercise paralyzed bodies. Unlike earlier devices, which were too bulky to implant, the miniature Active Book is smaller than a fingernail. It slips around spinal nerves and sends electrical impulses directly to the spine, researchers say. By implanting many of these chips, scientists hope to stimulate enough muscle groups to enable activities such as cycling or rowing.