Load-dependent modulation of affective picture processing
Load-dependent modulation of affective picture processing
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DOI：
10.3758/cabn.5.4.388
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发表时间：
2005-12-01
影响因子：
2.9
通讯作者：
Pessoa, L
中科院分区：
文献类型：
--
作者：
Erthal, FS;de Oliveira, L;Pessoa, L
由于情绪刺激的生物学意义，它们的处理在很大程度上被认为是自动的。在此报告的研究中，我们测试了另一种假设，即情绪刺激的处理需要一定程度的注意力。我们的实验利用了由残缺不全的尸体组成的高度负面和令人兴奋的视觉刺激。所有实验均采用单一任务，其中包括确定两个外围条是否具有相同的定向，从而消除可能污染先前研究的潜在任务差异混淆。我们的结果表明，与任务无关的令人不快的图像会减慢执行主要任务期间的反应时间。这种干扰受到任务难度和饮酒的调节，这表明情绪视觉刺激的处理不能免受注意力操纵的影响。这些结果表明，有必要利用更充分地消耗注意力资源的注意力操纵，以证明情绪刺激的处理是资源有限的。
Because of the biological significance of emotional stimuli, their processing is considered largely automatic. In the study reported herein, we tested the alternative hypothesis-namely, that the processing of emotional stimuli requires some level of attention. Our experiments utilized highly negative and arousing visual stimuli comprising mutilated bodies. All experiments employed a single task, which consisted of determining whether two peripheral bars were like oriented or not, thereby eliminating potential task-difference confounds that may have contaminated prior studies. Our results revealed that task-irrelevant unpleasant images slowed reaction time during the performance of the main task. Such interference was modulated by task difficulty as well as by alcohol consumption, showing that the processing of emotional visual stimuli is not immune to attentional manipulations. These results suggest that it is essential to utilize attentional manipulations that more fully consume attentional resources in order to demonstrate that the processing of emotional stimuli is resource limited.