I found this on the net:
New research into how the brain controls movement reveals a location of thoughts that determine what you will do.
Don't worry, the scientists can't read your most fantastic or lurid imaginings. What the Caltech researchers can do is spot the flicker of activity that occurs while you contemplate moving your hand.
The research is expected to improve efforts to build neural prostheses, devices that link a paralyzed person's mind to an external device with the help of brain electrodes and a computer.