
Activity-dependent spinal cord neuromodulation rapidly restores trunk and leg motor functions after complete paralysis - Nature Medicine
Implantation of a multielectrode paddle that allows personalized electrical stimulation to all regions of the spinal cord involved in leg and trunk movements rapidly restores motor function in patients with spinal cord injury with complete paralysis.

Spinal cord injury causing paralysis has been reversed by electrical implant.
Pretty amazing stuff, like Felicity's chip in Arrow.
Within a single day, activity-specific stimulation programs enabled these three individuals to stand, walk, cycle, swim and control trunk movements.
To switch from stairs to flat walking to swimming, the patients had to download a new program. Just like in the Matrix.