Component matrices from the whole-group principal components analysis (controls and Parkinson's disease patients), showing the percentage of variance explained by each orthogonal impulsivity factor and their eigenvalues.

Loadings of each task on the four factors are shown after varimax rotation, and shown in bold above the threshold 0.5.经方差最大旋转（varimax rotation）后，各任务在四个因子上的载荷值已列出，其中载荷值大于阈值0.5的结果以加粗字体呈现。