Affective priming and cognitive load: Event-related potentials suggest an interplay of implicit affect misattribution and strategic inhibition
Affective priming and cognitive load: Event-related potentials suggest an interplay of implicit affect misattribution and strategic inhibition
复制标题
DOI：
10.1111/psyp.13009
复制
发表时间：
2018-04-01
期刊：
影响因子：
3.7
通讯作者：
Schnuerch, Robert
中科院分区：
文献类型：
--
作者：
Gibbons, Henning;Seib-Pfeifer, Laura-Effi;Schnuerch, Robert
先前的研究表明，情感启动效应表示对中性目标的素一致性评价判断，在情感启动之前，情感启动效应随着对中性目标的加工程度的降低而增加。这被认为是更大的情感错误归因的证据。然而，到目前为止，还没有研究将初级加工深度的实验操作与ERPs的好处结合起来。在记录通道脑电的同时，有47名受试者在800ms情感主词后对韩国语表意文字做出喜欢/厌恶反应。在一项随机的受试者内部设计中，三个水平的工作记忆负荷在主要加工过程中被特别应用。情感启动对所有负荷都是显著的，甚至在负荷过大时会降低，尽管负荷操纵的有效性是通过减少后半部注意敏感的主要事件相关电位的幅度来证实的。此外，事件相关电位显示，随着负荷的增加，主词的外显情感辨别能力增强，其中高负荷下对中央/中央顶叶N400和顶顶/顶枕晚期正向复合体的配价效应最强。这表明：(A)被试在默认情况下试图抑制主情绪的加工，(B)抑制更多地在认知负荷下失败，从而导致情绪突破，从而导致情绪与主情绪的绑定，从而减少了情绪对目标的错误归因。内侧额叶负波作为情绪启动效应在靶区ERP中的相关性，是一个公认的(低)刺激值的标志，随着情绪启动负效应的增加而增加。研究结果支持内隐主目标情绪迁移是情绪启动的主要来源，但也指出了策略性自上而下过程的作用。
Prior research suggests that the affective priming effect denoting prime-congruent evaluative judgments about neutral targets preceded by affective primes increases when the primes are processed less deeply. This has been taken as evidence for greater affect misattribution. However, no study so far has combined an experimental manipulation of the depth of prime processing with the benefits of ERPs. Forty-seven participants made like/dislike responses about Korean ideographs following 800-ms affective prime words while 64-channel EEG was recorded. In a randomized within-subject design, three levels of working-memory load were applied specifically during prime processing. Affective priming was significant for all loads and even tended to decrease over loads, although efficiency of the load manipulation was confirmed by reduced amplitudes of posterior attention-sensitive prime ERPs. Moreover, ERPs revealed greater explicit affective discrimination of the prime words as load increased, with strongest valence effects on central/centroparietal N400 and on the parietal/parietooccipital late positive complex under high load. This suggests that (a) participants by default tried to inhibit the processing of the prime's affect, and (b) inhibition more often failed under cognitive load, thus causing emotional breakthrough that resulted in a binding of affect to the prime and, hence, reduced affect misattribution to the target. As a correlate of affective priming in the target ERP, medial-frontal negativity, a well-established marker of (low) stimulus value, increased with increasing negative affect of the prime. Findings support implicit prime-target affect transfer as a major source of affective priming, but also point to the role of strategic top-down processes.