1.   Controlling a mechanical object with neural signals requires a deeper understanding of how neurons work together in coordinating movement.

2.   For example, says Warwick, could doctors use neural signals from a healthy person to help someone learn to walk again after an injury that damaged motor functions?

3.   Painkillers can numb neural signals.

4.   The rats could produce the neural signals when they thought about pressing the lever but did not actually press it.

5.   Then the researchers built a device capable of translating the neural signals into the language of computers as they were being generated.