Effects of direct social experience on trust decisions and neural reward circuitry.
Effects of direct social experience on trust decisions and neural reward circuitry.
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DOI：
10.3389/fnins.2012.00148
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发表时间：
2012
影响因子：
4.3
通讯作者：
Delgado MR
中科院分区：
文献类型：
--
作者：
Fareri DS;Chang LJ;Delgado MR
人类纹状体是奖励处理不可或缺的一部分，并通过将经验结果与先前期望联系起来来支持学习。最近的研究表明纹状体参与处理社会互动的结果，例如社会认可/拒绝，以及学习他人的声誉。有趣的是，社会印象常常影响我们在互动过程中与他人的行为。从传记信息中获取的有关互动伙伴道德品质的信息阻碍了互动后通过自上而下的奖励电路调制来更新期望。一个突出的问题是，通过经验形成的初始印象是否会类似地调节行为和神经层面上更新社会印象的能力。我们调查了经验丰富的社会信息对信任行为和奖励相关的 BOLD 活动的作用。参与者与三个虚构的伙伴一起玩电脑抛球游戏，这些伙伴被操纵为好、坏或中立。然后，参与者在接受功能磁共振成像时，作为投资者与这些相同的合作伙伴一起玩迭代信任游戏。参与者不知道的是，信任游戏中伙伴的行为是随机的，并且与他们的抛球行为无关。参与者的信任决策受到他们之前在抛球游戏中的经验的影响，与好的和中立的伙伴相比，对坏伙伴的投资较少。强化学习模型显示，当经历与初始体验一致的结果时，参与者对更新他们对好伙伴和坏伙伴的信念更加敏感。纹状体和前扣带皮层 BOLD 活动的增加导致积极与消极的信任游戏结果的出现，这进一步与模型衍生的预测误差学习信号相关。这些结果表明，直接社会经验形成的初始印象可以通过奖励学习机制通过一致的信息不断形成。
The human striatum is integral for reward-processing and supports learning by linking experienced outcomes with prior expectations. Recent endeavors implicate the striatum in processing outcomes of social interactions, such as social approval/rejection, as well as in learning reputations of others. Interestingly, social impressions often influence our behavior with others during interactions. Information about an interaction partner’s moral character acquired from biographical information hinders updating of expectations after interactions via top down modulation of reward circuitry. An outstanding question is whether initial impressions formed through experience similarly modulate the ability to update social impressions at the behavioral and neural level. We investigated the role of experienced social information on trust behavior and reward-related BOLD activity. Participants played a computerized ball-tossing game with three fictional partners manipulated to be perceived as good, bad, or neutral. Participants then played an iterated trust game as investors with these same partners while undergoing fMRI. Unbeknownst to participants, partner behavior in the trust game was random and unrelated to their ball-tossing behavior. Participants’ trust decisions were influenced by their prior experience in the ball-tossing game, investing less often with the bad partner compared to the good and neutral. Reinforcement learning models revealed that participants were more sensitive to updating their beliefs about good and bad partners when experiencing outcomes consistent with initial experience. Increased striatal and anterior cingulate BOLD activity for positive versus negative trust game outcomes emerged, which further correlated with model-derived prediction error learning signals. These results suggest that initial impressions formed from direct social experience can be continually shaped by consistent information through reward learning mechanisms.
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影响因子：
2.6
作者：
Chang, Luke J.;Doll, Bradley B.;Sanfey, Alan G.
通讯作者：
Sanfey, Alan G.
影响因子：
16.2
作者：
Daw ND;Gershman SJ;Seymour B;Dayan P;Dolan RJ
通讯作者：
Dolan RJ
影响因子：
3.3
作者：
EVERITT, BJ;MORRIS, KA;ROBBINS, TW
通讯作者：
ROBBINS, TW
影响因子：
3
作者：
Chang LJ;Sanfey AG
通讯作者：
Sanfey AG
影响因子：
6.8
作者：
AKAIKE, H
通讯作者：
AKAIKE, H