A spinal cord injury interrupts the communication between the brain and the region of the spinal cord that produces walking, leading to paralysis. In this Nature article, Jocelyne Bloch & Grégoire Courtine et al. suggest that a digital bridge between the brain and spinal cord would enable volitional control over the timing and amplitude of muscle activity, restoring more natural and adaptive control of standing and walking in people with paralysis due to spinal cord injury. CNN recently report ...