第二次世界大战的幸存者中,有一些人患上称为创伤后应激障碍的精神疾病,症状为频发噩梦、常常感到恐惧、沮丧和记忆力减退等等。为了研究这种疾病与记忆障碍的关系,纽约西奈山医学院的科学家研究了一些患者老年时的状况。在研究对象67岁和72岁时,科学家分别对他们进行一次关于记忆力的测试,要求他们记住一些常用词语之间的联系。以前曾经发现,随着年龄增长,人在这方 Some of the survivors of World War II had mental illness called post-traumatic stress disorder, symptoms of frequent nightmares, frequent fear, depression and loss of memory. To study the relationship between this disorder and memory impairment, scientists at Mount Sinai School of Medicine in New York studied the condition of some patients in old age. At study age 67 and 72, scientists tested each of them separately for memory tests, asking them to remember the link between some common words. It was previously found that as we grow older, people are here