Reward reduces conflict by enhancing attentional control and biasing visual cortical processing.
Reward reduces conflict by enhancing attentional control and biasing visual cortical processing.
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DOI：
10.1162/jocn_a_00011
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发表时间：
2011-11
影响因子：
3.2
通讯作者：
Pessoa L
中科院分区：
文献类型：
--
作者：
Padmala S;Pessoa L
在具有挑战性的行为条件下，动机如何与认知控制相互作用？在这里，我们调查了动机和认知之间的相互作用，在反应冲突任务，并测试了一个特定的模型奖励对认知加工的影响。在行为上，参与者在奖励与无奖励条件下表现出减少的冲突。脑成像结果显示，一组皮层下和额顶叶区域的强烈影响奖励线索处理，重要的是，线索相关的反应，额顶叶注意区域的预测减少冲突相关的信号在内侧前额叶皮层（PFC）/前扣带皮层在即将到来的目标阶段。路径分析表明，在随后的目标阶段，在右侧顶内沟（IPS）和内侧PFC的干扰相关反应的线索反应之间的关系是通过在左侧梭状回，我们链接到分心相关的处理信号介导的。最后，奖励增加的功能之间的连接的权利IPS和双边的壳核和双边核的提示阶段，一种关系，共变的情况下，在右核的奖励与跨个人的敏感性。两者合计，我们的研究结果是一致的模型中，动机显着的线索被用来上调自上而下的控制过程中，偏见的视觉信息的选择，从而导致更有效的刺激处理在冲突条件下。
How does motivation interact with cognitive control during challenging behavioral conditions? Here, we investigated the interactions between motivation and cognition during a response conflict task and tested a specific model of the effect of reward on cognitive processing. Behaviorally, participants exhibited reduced conflict during the reward vs. no-reward condition. Brain imaging results revealed that a group of subcortical and fronto-parietal regions was robustly influenced by reward at cue processing and, importantly, that cue-related responses in fronto-parietal attentional regions were predictive of reduced conflict-related signals in the medial prefrontal cortex (PFC)/anterior cingulate cortex during the upcoming target phase. Path analysis revealed that the relationship between cue responses in the right intraparietal sulcus (IPS) and interference-related responses in the medial PFC during the subsequent target phase was mediated via signals in the left fusiform gyrus, which we linked to distractor-related processing. Finally, reward increased functional connectivity between the right IPS and both bilateral putamen and bilateral nucleus accumbens during the cue phase, a relationship that covaried with across-individual sensitivity to reward in the case of the right nucleus accumbens. Taken together, our findings are consistent with a model in which motivationally salient cues are employed to upregulate top-down control processes that bias the selection of visual information, thereby leading to more efficient stimulus processing during conflict conditions.
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影响因子：
7.6
作者：
BARON, RM;KENNY, DA
通讯作者：
KENNY, DA
影响因子：
2.9
作者：
Engelmann JB;Damaraju E;Padmala S;Pessoa L
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作者：
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