Methods: Through event related polentials(ERP) minsmatch negativity (MMN) , com-parision was made between the group of 26 AD and the group of 31 normal controls.

• 方法:应用事件相关电位(ERP)中的失匹配负波(MMN)的方法对26例AD患者及31位正常人检测结果进行对照研究。