Wiring electronic devices directly into your brain may not sound like a very pleasant idea, but this is exactly what so many scientists around the world seem to be quite excited about. The reason is that, far from being your worst cyborg nightmare, brain implants – also called neuroprostheses – can do true miracles. Connected to the nervous system, these little chips can make the blind see, the deaf hear and even allow the paralysed to once again gain control over the physical world.