Another article on the BrainGate system from Cyberkinetics:

The development means scientists might one day be able to connect the brains of paralyzed patients to muscle stimulators, allowing them to once again move their paralyzed limbs. Donoghue envisions a time in the future when people with spinal cord injuries or disease that attack the nerves will move like others, with wiring under their skin replacing their own nervous system.