Matthew Nagle was paralysed from the neck down after being stabbed several years ago, but technology gave him hope. He was one of four testing BrainGate, a new technology where a chip that picks up electrical pulses is implanted in the brain.

The chip is implanted just beneath the patient’s skull and is only a few millimeters square. Watch the video below to see Matthew playing a computer game and completing other tasks without the aid of a mouse, a keyboard or a joystick.