Because of basal ganglia pathophysiology in Parkinson’s disease, we also compared the reliability difference between HC and PD groups. The two groups had no significant differences in the congruent and orienting contrast (all ps > 0.05). However, the PD group exhibited higher ICC than the HC group on the incongruent, spatial cue, and executive contrasts. In contrast, the HC group showed better ICC than the PD group on the center cue, no cue, and Alerting contrasts. See supplementary Figure S7A for an illustration. For both groups, ICC estimates of congruent and incongruent conditions ranked higher than the three attention network contrasts and other conditions, which parallels the finding on the cerebral regions (Figure S7B).