Ikemoto and Panksepp, 1999). However, no human brain-imaging
studies that have examined ventral striatal activity during incentive tasks have explicitly focused on the anticipation of rewards
versus punishments (Thut et al., 1997; Koepp et al., 1998; Delgado et al., 2000; Elliott et al., 2000; Knutson et al., 2000;
O’Doherty et al., 2001). In the present study, we were able to
visualize brain activity during anticipatory intervals because of
the enhanced temporal resolution afforded by event-related…
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