The responses to those cues may have been adaptive when they were first learned — fear and diving for cover in a war zone, for example — but in PTSD, they continue to control behavior when it's no longer appropriate.

当人们最初习得这些对线索的条件反射也许有利于他们适应——比如在战区会感到害怕、卧倒并掩护——但对于患有创伤后应激障碍的人，即使这些反应已不必要，它们依旧控制着人们的行为。