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The Medial Frontal Cortex and the Rapid Processing of Monetary Gains and Losses
William J. Gehring,*Adrian R. Willoughby
We report the observation of neural processing that
occurs within 265 milliseconds after outcome stimuli that inform humanparticipants about gains and losses in a gambling task. A
negative-polarityevent-related brain potential, probably generated by
a medial-frontalregion in or near the anterior cingulate cortex, was
greater inamplitude when a participant's choice between two
alternativesresulted in a loss than when it resulted in a gain. The
sensitivityto losses was not simply a reflection of detecting an
error; gainsdid not elicit the medial-frontal activity when the
alternativechoice would have yielded a greater gain, and losses
elicitedthe activity even when the alternative choice would have
yieldeda greater loss. Choices made after losses were riskier and wereassociated with greater loss-related activity than choices madeafter
gains. It follows that medial-frontal computations may contributeto
mental states that participate in higher level decisions, includingeconomic choices.
Department of Psychology, University of Michigan, 525 East
University, Ann Arbor, MI 48109-1109, USA.
*
To whom correspondence should be addressed. E-mail:
wgehring{at}umich.edu
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LETTERS
Clay B. Holroyd, Michael G. H. Coles, Sander Nieuwenhuis;, William J. Gehring, and Adrian R. Willoughby (31 May 2002) Science296 (5573), 1610.
[DOI: 10.1126/science.296.5573.1610] |Full Text »
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