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- Publisher
- The American Physiological Society
- Copyright
- Copyright © 2011 the American Physiological Society
- ISSN
- 0022-3077
- eISSN
- 1522-1598
- Publisher site
- See Article on Publisher Site
Abstract
Abstract Research suggests that the basal ganglia complex is a major component of the neural circuitry that mediates reward-related processing. However, human studies have not yet characterized the response of the basal ganglia to an isolated reward, as has been done in animals. We developed an event-related functional magnetic resonance imaging paradigm to identify brain areas that are activated after presentation of a reward. Subjects guessed whether the value of a card was higher or lower than the number 5, with monetary rewards as an incentive for correct guesses. They received reward, punishment, or neutral feedback on different trials. Regions in the dorsal and ventral striatum were activated by the paradigm, showing differential responses to reward and punishment. Activation was sustained following a reward feedback, but decreased below baseline following a punishment feedback. Footnotes Address for reprint requests: M. Delgado, Dept. of Neuroscience, 446 Crawford Hall, University of Pittsburgh, Pittsburgh, PA 15260 (E-mail: delgado@brain.bns.pitt.edu ). Copyright © 2000 The American Physiological Society
Journal
Journal of Neurophysiology – The American Physiological Society
Published: Dec 1, 2000