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Date: 日期： Source: 来源： Center for BrainHealth 大脑健康中心 Summary: 概述： New research illustrates how fear arises in the brain when individuals are exposed to threatening images. This novel study is the first to separate emotion from threat by controlling for the dimension of arousal. 新研究阐述了大脑在人们看到威胁影像时如何产生恐惧情绪。这个新奇的研究首次通过控制唤醒的维度将威胁与情感分割开来。 An estimated 8% of Americans will suffer from post traumatic stress disorder (PTSD) at some point during their lifetime. Brought on by an overwhelming or stressful event or events, PTSD is the result of altered chemistry and physiology of the brain. Understanding how threat is processed in a normal brain versus one altered by PTSD is essential to developing effective interventions. 据估计约8%的的美国人在他们的某个时段会遭受创伤后应激障碍(PTSD)的折磨。由强悍而令人难以应对的或紧张的一个或多个事件所引发，PTSD是大脑化学上和生理上改变的结果。理解恐惧在一个正常的脑部活动中被PTSD改变对采取有效的干预是至关重要的。 New research from the Center for BrainHealth at The University of Texas at Dallas published online today in Brain and Cognition illustrates how fear arises in the brain when individuals are exposed to threatening images. This novel study is the first to separate emotion from threat by controlling for the dimension of arousal, the emotional reaction provoked, whether positive or negative, in response to stimuli. Building on previous animal and human research, the study identifies an electrophysiological marker for threat in the brain. | 
