Try this Zapping the brain with magnets makes it IMPOSSIBLE to lie, claim scientists (Sep 9, 2011)
If truth be told, magnetic interference with the brain makes it impossible to lie. At least, that’s what a group of Estonian researchers are claiming. They found that when magnets were applied to either the right or left side of the dorsolateral prefrontal cortex, found directly behind your forehead, it made you lie or tell the truth, depending on which side was stimulated.