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首页> 外文期刊>Neuron >Modulation of caudate activity by action contingency.
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Modulation of caudate activity by action contingency.

机译：通过动作意外事件来调节尾状活动。

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Research has increasingly implicated the striatum in the processing of reward-related information in both animals and humans. However, it is unclear whether human striatal activation is driven solely by the hedonic properties of rewards or whether such activation is reliant on other factors, such as anticipation of upcoming reward or performance of an action to earn a reward. We used event-related functional magnetic resonance imaging to investigate hemodynamic responses to monetary rewards and punishments in three experiments that made use of an oddball paradigm. We presented reward and punishment displays randomly in time, following an anticipatory cue, or following a button press response. Robust and differential activation of the caudate nucleus occurred only when a perception of contingency existed between the button press response and the outcome. This finding suggests that the caudate is involved in reinforcement of action potentially leading to reward, rather than in processing reward per se.
机译：研究越来越多地牵涉到纹状体在动物和人类中与奖励有关的信息的处理中。然而，尚不清楚人类纹状体的激活是仅由奖励的享乐特性驱动还是这种激活是否依赖于其他因素，例如对即将到来的奖励的预期或获得奖励的行为的执行。我们使用事件相关的功能磁共振成像技术，在三个使用奇数球范式的实验中研究了对金钱奖励和惩罚的血液动力学反应。我们根据预期的提示或按下按钮的响应，在时间上随机呈现了奖励和惩罚显示。仅当按钮按下反应与结果之间存在偶然性时，才发生尾状核的鲁棒性和差异性激活。该发现表明尾状体参与潜在地导致奖励的行动的增强，而不是参与奖励本身的处理。

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