没有了足够的信息，参与者脑部活跃的区域变成了杏仁体，此区域和恐惧反射联系。
With less information to go on, the players exhibited substantially more activity in the amygdala, a brain area reliably associated with fear conditioning.
当人的小脑扁桃体受伤后，就会抑制恐惧情绪的反应，因此不能靠学习行为建立新的恐惧反射。
People with an injured amygdala have dampened emotional responses and so do not learn to fear new things through association.
他们假定恐惧和饥饿类似，也是一种单纯的条件反射。
The implicit assumption was that fear, like hunger, was a simple provoked response.
在重新形成条件反射后，两组小鼠都暂时克服了对声音的恐惧，但注射了的小鼠克服得更快。
Both sets of mice temporarily overcame their fear of the sound after reconditioning, but the mice that had been injected with the enzyme did so much faster.
形成条件反射后，一个单独的黄色方块就足以让她的实验对象的皮肤电导提高——它是通常因为出汗导致的恐惧反应。
After conditioning, the appearance of asingle yellow square was enough to raise her subjects’ skinconductivity—a fear response typically caused by an increase in sweatproduction.
甚至在我们有意识的去了解情况之前，恐惧就已经攻击我们的大脑使它产生了条件反射了。
Fear hits primitive brain areas to produce reflexive reactions before the situation is even consciously perceived.
科比和考芙首先对一群大鼠新生3天的神经元进行标记，接着在两周后让这些大鼠建立了一个恐惧性条件反射。
Kirby and Kaufer labeled hippocampal cells created over a three-day period in a group of rats, and then conditioned a fear response in these rats two weeks later.
非理性的恐惧是偏见和恐惧症的根源，膝跳反射也是因此而发生。 下面这些都是非理性的恐惧。
Irrational fear is the source of prejudices, phobias and knee-jerk reactions.
恐惧反应可以通过条件反射而建立。
恐惧反应可以通过条件反射而建立。
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