脑电图研究结果揭示了恐惧如何在大脑中传递

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Center for BrainHealth
大脑健康中心

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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.
达拉斯德州大学的大脑健康中心今天在大脑和认知论坛上发布了新研究，阐明了当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，无论是积极的还是消极的，情绪反应都是响应于刺激。基于之前对动物和人类的研究，该研究确定了一个反映大脑中威胁的电生理指标。

"We are trying to find where thought exists in the mind," explained John Hart, Jr., M.D., Medical Science Director at the Center for BrainHealth. "We know that groups of neurons firing on and off create a frequency and pattern that tell other areas of the brain what to do. By identifying these rhythms, we can correlate them with a cognitive unit such as fear."
“我们试图发现想法存在于大脑中的位置，”大脑健康中心的医学科学主任、医学博士John Hart, Jr解释道。“我们知道组神经元放电和停电时，会创建一个频率和模式，告诉大脑的其他区域该做什么。通过识别这些节律，我们能把它们与恐惧等认知单元相联系。”

Utilizing electroencephalography (EEG), Dr. Hart's research team identified theta and beta wave activity that signifies the brain's reaction to visually threatening images.
利用脑电图(EEG)，哈特博士的研究小组发现了表示大脑对视觉威胁影响反应的θ和β波活动。