They are only just starting to get scanning techniques that will scan the brain while it is working. When these are tightened up a little, i.e. they become cheaper and the doctors learn to understand what they are seeing, then I think some of our burning questions will get answered. The big problem that I see with this is how to differentiate what is happening in the brain and filter out the 'noise' of all the other activity that is going on. I think there maybe surprises to be had.