Monetary Incentives Modulate Feedback-related Brain Activity.
Monetary Incentives Modulate Feedback-related Brain Activity.
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金钱激励调节反馈相关的大脑活动
DOI：
10.1038/s41598-018-30294-z
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发表时间：
2018-08-09
影响因子：
4.6
通讯作者：
Zheng Y
中科院分区：
文献类型：
--
作者：
Mei S;Li Q;Liu X;Zheng Y
先前的研究表明，反馈评价对金钱激励很敏感。我们研究了这种敏感性是否是由动机显着性（奖励和惩罚事件与中性事件之间的差异）或动机效价（奖励和惩罚事件之间的差异）驱动的。 57 名参与者在增益情境、损失情境和中性情境下执行了货币激励延迟任务，并记录了他们的脑电图。在时域内，反馈相关负性（FRN）表现出动机显着效应，而 P3 表现出奖励效价效应。在时频域中，我们观察到无论性能反馈如何，锁相 theta 功率都会产生动机显着效应，但非锁相 theta 功率会因响应不成功的反馈而出现奖励效价效应。此外，我们发现了锁相增量的奖励价效应。因此，这些发现表明，反馈评估的情感调制可以由动机效价或动机显着性驱动，这取决于时间动态（FRN 与 P3）、频率动态（theta 功率与 delta 功率）以及相位动态（诱发功率与感应功率）。
Previous research has shown that feedback evaluation is sensitive to monetary incentive. We investigated whether this sensitivity is driven by motivational salience (the difference between both rewarding and punishing events versus neutral events) or by motivational valence (the difference between rewarding and punishing events). Fifty-seven participants performed a monetary incentive delay task under a gain context, a loss context, and a neutral context with their electroencephalogram recorded. During the time domain, the feedback-related negativity (FRN) showed a motivational salience effect whereas the P3 displayed a reward valence effect. During the time-frequency domain, we observed a motivational salience effect for phase-locked theta power regardless of performance feedback, but a reward valence effect for non-phase-locked theta power in response to unsuccessful feedback. Moreover, we found a reward valence effect for phase-locked delta. These findings thus suggest that the affective modulation on feedback evaluation can be driven either by motivational valence or by motivational salience, which depends on the temporal dynamics (the FRN vs. the P3), the frequency dynamics (theta vs. delta power), as well as the phase dynamics (evoked vs. induced power).
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