Neuroeconomics combines game theory and brain imaging tools to study human decision making in moral (Greene, Rocha), politics (Rocha), economy (McClure, etc), etc. The results of such studies are shedding light on the mechanisms of human decision-making and allowing the development of formal models that better describes the man as an intentional rational agent. These models combine rationality and emotion to provide a better modeling of human action. Emotion is considered a key element in determining the actual values of the expected reward and the calculated risk of acting. The implications of recents findings provided by neurosciences on neuroethics and law are modelled and discussed in this theoretical framework