Emotional priming effects during Stroop task performance.
Emotional priming effects during Stroop task performance.
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DOI：
10.1016/j.neuroimage.2009.10.076
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发表时间：
2010-02-01
期刊：
影响因子：
5.7
通讯作者：
Belger, Aysenil
中科院分区：
文献类型：
--
作者：
Hart, Sarah J.;Green, Steven R.;Casp, Michael;Belger, Aysenil
在情感环境中做出决定的能力需要两个功能整合的神经系统之间的平衡，这两个系统主要支持执行控制和情感处理。一些研究已经证明了在进行认知任务期间出现的情绪干扰的影响，但目前尚不清楚在认知任务之前激活情绪回路如何增强或破坏执行系统。本研究采用fMRI技术考察了情绪启动对数字Stroop任务执行加工的影响。我们的研究结果表明，在执行要求较少的试验中，在包括腹外侧前额叶皮层（vlPFC），海马和扣带回在内的区域网络中存在更大的厌恶情绪衰减效应。这种衰减效应在增加执行需求的试验中被抵消，这表明虽然情绪系统的预激活可能会导致多个区域的活动自动衰减，但执行功能的要求可能会压倒令人厌恶的情绪衰减效应。此外，这种覆盖效应被发现与执行处理过程中更快的反应时间有关。这些研究结果表明，活动的vlPFC，扣带和扣带是动态调整，以优化性能，并说明了重要性的时间，每个系统的参与，以确定如何竞争的认知和情感信息的处理。
The ability to make decisions within an emotional context requires a balance between two functionally integrated neural systems that primarily support executive control and affective processing. Several studies have demonstrated effects of emotional interference presented during an ongoing cognitive task, but it is unclear how activating the emotional circuitry prior to a cognitive task may enhance or disrupt the executive system. In this study we used fMRI to examine the effects of emotional priming on executive processing during a number Stroop task. Our results indicated that during trials with less executive requirements, there was a greater aversive emotional attenuation effect in a network of regions including the ventrolateral prefrontal cortex (vlPFC), insula and cingulate gyrus. This attenuation effect was counteracted during trials with increased executive demand, suggesting that while pre-activation of the emotional system may lead to an automatic attenuation of activity in multiple regions, requirements for executive function may override the aversive emotional attenuation effect. Furthermore, this override effect was found to be associated with faster reaction times during executive processing. These findings demonstrate that activity in the vlPFC, cingulate and insula is dynamically adjusted in order to optimize performance, and illustrate the importance of the timing of each system’s engagement in determining how competing cognitive and emotional information is processed.
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