Methods 193 normal subjects were tested by mini-mental state examination (MMSE), word immediate recall and word delayed recall test, clock drawing test, digit span test and verbal fluency test.

方法：对193名正常老年人采用简明智力状态检查(MMSE)、词语即刻回忆和延迟回忆、画钟表、数字广度和词语流畅性测验等神经心理学测验进行认知测评。

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