Methods Clock drawing test (CDT), block design test (BDT) and trail making test (TMT) were conducted in 27 cases of early-stage PD,14 cases of MCI and 20 cases of normal control, respectively.

• 方法对27例早期PD患者、14例MCI患者及20例健康对照老人分别进行画钟试验(CDT)、木块图(BDT)及连线试验(TMT)检查，并对结果进行分析。