Affective flexibility - Evaluative processing goals shape amygdala activity
Affective flexibility - Evaluative processing goals shape amygdala activity
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DOI：
10.1111/j.1467-9280.2008.02061.x
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发表时间：
2008-02-01
影响因子：
8.2
通讯作者：
Johnsen, Ingrid R.
中科院分区：
文献类型：
--
作者：
Cunningham, William A.;Van Bavel, Jay J.;Johnsen, Ingrid R.
虽然早期的研究暗示杏仁核在自动处理负面信息，最近的研究表明，它在处理各种刺激的动机相关性中发挥着更普遍的作用，这表明效价和杏仁核激活之间的关系可能取决于上下文目标。本研究提供的实验证据表明，评价性目标动态调节效价和杏仁核活动之间的关系。在功能磁共振成像过程中，参与者评估了名人的积极，消极或整体（积极加消极）方面。当参与者提供总体评价时，积极和消极的名字都与杏仁核激活有关。当他们评价积极性时，积极的名字与杏仁核的活动有关，当他们评价消极性时，消极的名字与杏仁核的活动有关。证据的负面偏见被发现，调制更明显的积极比消极的信息。这些数据表明，杏仁核灵活地处理动机相关的评价信息，根据当前的处理目标，但处理负面信息的灵活性低于积极的信息。
Although early research implicated the amygdala in automatic processing of negative information, more recent research suggests that it plays a more general role in processing the motivational relevance of various stimuli, suggesting that the relation between valence and amygdala activation may depend on contextual goals. This study provides experimental evidence that the relation between valence and amygdala activity is dynamically modulated by evaluative goals. During functional magnetic resonance imaging, participants evaluated the positive, negative, or overall (positive plus negative) aspects of famous people. When participants were providing overall evaluations, both positive and negative names were associated with amygdala activation. When they were evaluating positivity, positive names were associated with amygdala activity, and when they were evaluating negativity, negative names were associated with amygdala activity. Evidence for a negativity bias was found; modulation was more pronounced for positive than for negative information. These data suggest that the amygdala flexibly processes motivationally relevant evaluative information in accordance with current processing goals, but processes negative information less flexibly than positive information.