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Anterior cingulate cortex and insula response during indirect and direct processing of emotional faces in generalized social anxiety disorder

机译:广泛性社交焦虑症间接和直接处理情感面孔时的前扣带回皮层和绝缘岛反应

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摘要

BackgroundGeneralized social anxiety disorder (gSAD) is associated with a heightened neural sensitivity to signals that convey threat, as evidenced by exaggerated amygdala and/or insula activation when processing face stimuli that express negative emotions. Less clear in the brain pathophysiology of gSAD are cortical top down control mechanisms that moderate reactivity in these subcortical emotion processing regions. This study evaluated amygdala, insula, and anterior cingulate cortex (ACC) activity in gSAD with a novel “Emotional Faces Shifting Attention Task” (EFSAT), an adaptation of perceptual assessment tasks well-known to elicit amygdala response. In healthy volunteers, the task has been shown to engage the amygdala when attention is directed to emotional faces and the ACC when attention is directed to shapes, away from emotional faces.
机译:背景普遍的社交焦虑症(gSAD)与对传达威胁的信号的神经敏感性增强有关,如在处理表达负面情绪的面部刺激时夸张的杏仁核和/或岛突激活即可证明这一点。在gSAD的大脑病理生理学中,尚不清楚的是皮层自上而下的控制机制,该机制在这些皮层下情感处理区域具有适度的反应性。这项研究使用一种新颖的“情绪面孔转移注意力任务”(EFSAT)对gSAD中的杏仁核,岛状岛和前扣带回皮层(ACC)的活动进行了评估,这是一种众所周知的诱发杏仁核反应的知觉评估任务。在健康的志愿者中,已显示出当注意力集中在情感面孔上时,杏仁核参与了该任务;当注意力集中在远离情感面孔的形状上时,ACC参与了杏仁核。

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