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首页> 外文期刊>Social cognitive and affective neuroscience >Emotional task management: neural correlates of switching between affective and non-affective task-sets
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Emotional task management: neural correlates of switching between affective and non-affective task-sets

机译：情感任务管理：情感和非情感任务集之间切换的神经相关性

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摘要

Although task-switching has been investigated extensively, its interaction with emotionally salient task content remains unclear. Prioritized processing of affective stimulus content may enhance accessibility of affective task-sets and generate increased interference when switching between affective and non-affective task-sets. Previous research has demonstrated that more dominant task-sets experience greater switch costs, as they necessitate active inhibition during performance of less entrenched tasks. Extending this logic to the affective domain, the present experiment examined (a) whether affective task-sets are more dominant than non-affective ones, and (b) what neural mechanisms regulate affective task-sets, so that weaker, non-affective task-sets can be executed. While undergoing functional magnetic resonance imaging, participants categorized face stimuli according to either their gender (non-affective task) or their emotional expression (affective task). Behavioral results were consistent with the affective task dominance hypothesis: participants were slower to switch to the affective task, and cross-task interference was strongest when participants tried to switch from the affective to the non-affective task. These behavioral costs of controlling the affective task-set were mirrored in the activation of a right-lateralized frontostriatal network previously implicated in task-set updating and response inhibition. Connectivity between amygdala and right ventrolateral prefrontal cortex was especially pronounced during cross-task interference from affective features.
机译：尽管已广泛研究了任务切换，但是它与情感上重要任务内容的交互作用仍不清楚。优先处理情感刺激内容可能会增强情感任务集的可访问性，并且在情感和非情感任务集之间切换时会产生更大的干扰。先前的研究表明，更多的主导任务集会经历更高的转换成本，因为它们在执行较弱的任务时需要主动抑制。将这一逻辑扩展到情感领域，本实验研究了（a）情感任务集是否比非情感任务集更占主导地位，以及（b）哪种神经机制调节情感任务集，从而使较弱的，非情感任务-sets可以执行。在进行功能性磁共振成像时，参与者根据其性别（非情感任务）或他们的情绪表达（情感任务）对面部刺激进行分类。行为结果与情感任务优势假设一致：参与者尝试从情感任务转换为非情感任务时，参与者切换到情感任务的速度较慢，跨任务干扰最强。控制情感任务集的这些行为成本反映在先前牵涉到任务集更新和反应抑制的右侧额骨窦网络的激活中。杏仁核和右前外侧前额叶皮层之间的连通性在情感特征的跨任务干扰过程中尤为突出。

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