那些帮助我们应对压力，控制恐惧等情绪反应的大脑机制发生了变化，病人仿佛期待着极度痛苦的创伤事件不断重演并作出回应。

The systems in the brain that help us deal with stress and regulate fear and emotional responding are changed as you might expect in response to the extreme trauma of combat.

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然而，这些个体中仍然有一个显著的比例（虽然数量不多）保留了一种极度警醒症的状态，并且因为要求创伤回忆或者“闪回”的调查访问而感到痛苦。

However, a small butsignificant percentage of such individuals, however, remain in a state ofhyper-vigilance, and are distressed by the visitations of traumaticrecollections or "flashbacks".

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