Fig. 5.

Plots show mean functional connectivity (FC; non-transformed; with standard error of the mean depicted as error bars). As depicted on the left, FC between the deep gray matter (DGM) and the frontoparietal networks (FPN) was non-significantly higher for PD patients impaired (z-value < -1.5) on executive tests ((t(48) = 1.651 p = 0.106). As depicted on the right, FC between the dorsal attention network (DAN) and ventral attention network (VAN) was significantly lower for PD patients impaired (z-value < -1.5) on motor perseveration (t(48) = 2.582 p = 0.013).