Wechsler Memory Scale-Revised(WMS-R),Trail Making Test A and Wisconsin Card Sorting Task(WCST)were administered to both groups.

• 做韦氏记忆量表、连线测验和威斯康星卡片分类测验,测查人格和情绪状况,并为志愿者作脑血流灌注显像检查。