Demographics of the PD and HE samples, and clinical characteristics PD sample.

“UPDRS III” is the Unified Parkinson’s Disease Rating Scale [72] section III (lower score indicates greater motor impairment); “H & Y” is the modified Hoehn & Yahr stage assessment [73] (higher score indicates more advanced PD stage); “MMSE” is the Mini Mental State Exam [74] (lower score indicates greater cognitive impairment); and “FOGQ” is the Freezing of Gait Questionnaire [75] (higher score indicates increased freezing severity).Demographics of the PD and HE samples, and clinical characteristics PD sample.“UPDRS III” 即统一帕金森病评定量表（Unified Parkinson’s Disease Rating Scale）第三部分，得分越低提示运动功能损伤程度越重；“H & Y” 为改良霍恩-雅尔（Hoehn & Yahr）分期评估[73]，得分越高则帕金森病（PD）分期越晚；“MMSE” 即简易精神状态检查表（Mini Mental State Exam）[74]，得分越低提示认知功能损伤程度越重；“FOGQ” 为步态冻结问卷（Freezing of Gait Questionnaire）[75]，得分越高则步态冻结的严重程度越高。帕金森病（PD）样本与HE样本的人口统计学特征，以及帕金森病样本的临床特征。