Thomas Baumgartner and his team have used functional magnetic resonance imaging – fMRI—to tell whether someone intends to keep a promise.
In their experiments, volunteers pretended to be investors and financiers, and the scientists were able to predict which subjects would keep their promises to hand over money and which wouldn't. Those who intended not to keep their word registered increased activity in the areas of the brain associated with emotion and control.
but the crazy part is....
A Dartmouth College team led by neuroscientist Craig Bennett used fMRI on a salmon and found that its brain registered humanlike emotional responses
when shown a variety of stimulatory pictures. There was just one problem, however: The salmon was dead.
flippin crazy!!!
http://www.newsmaxhealth.com/health_stories/MRIs_truth_promises/2009/12/24/302443.html