Key points from article :
Chip was implanted into the part of the monkeys' brain that controls movement.
Chip reads the spikes of electrical activity, sends them to a nearby computer.
Computer sends instructions to an implant to electrically stimulate the appropriate nerves.
Monkeys regained some control of their paralysed leg within 6 days, walked in a straight line on a treadmill.
Experts said the technology could be ready for human trials within a decade.
Results got published in the journal Nature.
