Liking and left amygdala activity during food versus nonfood processing are modulated by emotional context
Liking and left amygdala activity during food versus nonfood processing are modulated by emotional context
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DOI：
10.3758/s13415-019-00754-8
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发表时间：
2019-11-11
影响因子：
2.9
通讯作者：
Neumann, Jane
中科院分区：
文献类型：
--
作者：
Garcia-Garcia, Isabel;Kube, Jana;Neumann, Jane
情绪会影响我们的饮食行为。面对急性压力源或处于积极的情绪中是倾向于改变食欲的情况的例子。然而，大脑如何将这些与情绪有关的变化整合到食物加工过程中的问题仍然难以捉摸。在这里，我们设计了一个情绪启动功能磁共振成像任务，以测试杏仁核活动在食物图片不同的情绪背景。58名女性参与者完成了一项新的情绪启动任务，其中消极，中性或积极的情况下的情绪图像其次是食物或物体的图片。在每次试验中启动后，参与者对他们喜欢所展示的食物或物品的程度进行评分。我们分析了在“食物>物体”的对比过程中，大脑活动是如何根据整个大脑和杏仁核的情绪背景而变化的。我们还检查了肥胖的潜在影响（即，腰围）。我们观察到更高的差异，喜欢分数的食物和物体后，积极启动比中性启动。在左侧杏仁核中，相对于负启动，中性启动后，在“食物>物体”的对比下的活动更高。腰围是没有显着相关的这种情绪启动效应对食品加工。我们的研究结果表明，情绪环境改变食物和非食物的看法，无论是在喜欢分数和关于参与左杏仁核。此外，我们的研究结果表明，情绪背景对食物的显着优势有影响，可能会影响饮食行为。
Emotions can influence our eating behaviors. Facing an acute stressor or being in a positive mood are examples of situations that tend to modify appetite. However, the question of how the brain integrates these emotion-related changes in food processing remains elusive. Here, we designed an emotional priming fMRI task to test if amygdala activity during food pictures differs depending on the emotional context. Fifty-eight female participants completed a novel emotional priming task, in which emotional images of negative, neutral, or positive situations were followed by pictures of either foods or objects. After priming in each trial, participants rated how much they liked the shown foods or objects. We analyzed how brain activity during the contrast "foods > objects" changed according to the emotional context-in the whole brain and in the amygdala. We also examined the potential effect of adiposity (i.e., waist circumference). We observed a higher difference between liking scores for foods and objects after positive priming than after neutral priming. In the left amygdala, activity in the contrast "foods > objects" was higher after neutral priming relative to negative priming. Waist circumference was not significantly related to this emotional priming effect on food processing. Our results suggest that emotional context alters food and nonfood perception, both in terms of liking scores and with regard to engagement of the left amygdala. Moreover, our findings indicate that emotional context has an impact on the salience advantage of food, possibly affecting eating behavior.