Fig. 4

Correlations of occipital degree centrality with clinical symptoms in specific slow-3 oscillation frequency. a-d separately showed clinical correlations of four occipital nodes. Significant correlations between occipital degree centrality and total motor score (UPDRS motor score) were first observed, which was survived after Bonferroni correction. Then, in order to identify which component of motor symptoms contributed dominantly to the alterations of nodal decree centrality, we correlated each motor subscale (akinesia/rigidity and tremor) with occipital degree centrality. The red solid regression line indicated that the correlation was significant. And the blue dot line indicated the 95% prediction interval of the regression line (red solid line)