Reward prediction responses in prefrontal cortex using matching-to-sample procedure in monkey(Summary of Awarded Presentations at the 24th Annual Meeting)

概要

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Two male Japanese monkeys were trained to perform a sequential conditional discrimination task with an asymmetric reward. In this task the first cue A1 (or A2) was followed by cues B1 and B2, and the monkey made a saccadic eye movement to choose one of these two (B1 or B2). After this first choice the third cues, C1 and C2, were displayed and the monkey selected either. The two correct association chains were: A1, B1, and C1; and A2, B2, and C2. The asymmetric reward rule was introduced block by block. In one block the A1-chain was rewarded but the A2-chain was not. In another block the reverse situation occurred. The monkeys displayed a differential reaction time and choice accuracy, based on a reward prediction. We also observed neural activity in the prefrontal cortex which was associated with the reward prediction and the stimulus-reward relationship.
日本基礎心理学会の論文
2006-09-30