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The Neural Basis of Economic Decision-Making in the Ultimatum Game
Alan G. Sanfey,1,3*James K. Rilling,1*Jessica A. Aronson,2Leigh E. Nystrom,1,2Jonathan D. Cohen1,2,4
The nascent field of neuroeconomics seeks to ground economicdecisionmaking in the biological substrate of the brain. Weused functional magnetic resonance imaging of Ultimatum Gameplayers to investigate neural substrates of cognitive and emotionalprocesses involved in economic decision-making. In this game,two players split a sum of money;one player proposes a divisionand the other can accept or reject this. We scanned playersas they responded to fair and unfair proposals. Unfair offerselicited activity in brain areas related to both emotion (anteriorinsula) and cognition (dorsolateral prefrontal cortex). Further,significantly heightened activity in anterior insula for rejectedunfair offers suggests an important role for emotions in decision-making.
1 Center for the Study of Brain, Mind and Behavior, Princeton University, Princeton, NJ 08544, USA. 2 Department of Psychology, Princeton University, Princeton, NJ 08544, USA. 3 Center for Health and Well-Being, Princeton University, Princeton, NJ 08544, USA. 4 Department of Psychiatry, University of Pittsburgh, Pittsburgh, PA 15260, USA.
* These authors contributed equally to this manuscript.
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