"Brain scans may be able to predict what you will do better than you can yourself, and might offer a powerful tool for advertisers or health officials seeking to motivate consumers, researchers said on Tuesday." http://uk.news.yahoo.com/22/20100622/tsc-oukoe-uk-brain-reading-011ccfa.html
i seen this done with insects that have smaller brains but the same neuro activity. They are decisive creature and can make up their our minds. the study was done to see if they moved on their own, and thought about it before they did it. if they want to move or not. Or forced to be moved different sections of the brain lit up..