there is a review of the subject here

http://papers.ssrn.com/sol3/papers.cfm?abstract_id=1792628

and a less wrong summary here http://lesswrong.com/lw/5up/review_foundations_of_neuroeconomic_analysis/

looks interesting, something to keep an eye on

63 year old carpenter from Vancouver, been lurking here since the beginning and overcoming biases before that. heuristics and bias was what brought me here, and akrasia is what kept me coming back