MOG and Parkinson disease: As shown in Fig. 3A, the post-hoc analysis revealed significantly lower RS-CVR in the L-SOG and L-MOG for both the PD-NC and PD-MCI groups compared to the HCs (L-SOG: p = 0.0017, p < 0.001; L-MOG: p = 0.0279, p < 0.001, respectively), with no significant differences observed between the two PD groups in these two gyri.