The role of affective evaluation in conflict adaptation: An LRP study
The role of affective evaluation in conflict adaptation: An LRP study
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DOI：
10.1016/j.bandc.2017.05.003
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发表时间：
2017-08-01
影响因子：
2.5
通讯作者：
Dreisbach, Gesine
中科院分区：
文献类型：
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作者：
Froeber, Kerstin;Stuermer, Birgit;Dreisbach, Gesine
不相容反应倾向之间的冲突通常伴随着旨在减少后续冲突的控制调整，这种现象通常被称为冲突适应。德赖斯巴赫和菲舍尔（2015，2016）最近提出，最初激发这种顺序控制调整的不是冲突本身，而是冲突的厌恶性质。在本研究中，我们以一种更直接的方式检验了厌恶信号在冲突适应中的因果作用。为此，在每次垂直西蒙任务的试验后，参与者将他们最后一次试验的经历评为相当愉快或不愉快。冲突适应通过偏侧准备电位作为衡量早期运动相关激活的基础上计算的事件相关的脑电位。结果表明，典型的抑制自动反应激活后的试验被评为不愉快，而抑制放松后的试验被评为愉快。也就是说，顺序控制适应不是基于先前的冲突，而是基于主观情感体验。这被视为即使在没有实际冲突的情况下，负面影响也会触发后续控制调整的证据。
Conflict between incompatible response tendencies is typically followed by control adjustments aimed at diminishing subsequent conflicts, a phenomenon often called conflict adaptation. Dreisbach and Fischer (2015, 2016) recently proposed that it is not the conflict per se but the aversive quality of a conflict that originally motivates this kind of sequential control adjustment. With the present study we tested the causal role of aversive signals in conflict adaptation in a more direct way. To this end, after each trial of a vertical Simon task participants rated whether they experienced the last trial as rather pleasant or unpleasant. Conflict adaptation was measured via lateralized readiness potentials as a measure of early motor-related activation that were computed on the basis of event-related brain potentials. Results showed the typical suppression of automatic response activation following trials rated as unpleasant, whereas suppression was relaxed following trials rated as pleasant. That is, sequential control adaptation was not based on previous conflict but on the subjective affective experience. This is taken as evidence that negative affect even in the absence of actual conflict triggers subsequent control adjustments.