Figure 4: Significant Pearson correlation of DCM connectivity parameters with motor function and cortical excitability. (a) The interhemispheric connections from contralesional-ipsilesional M1 correlated with the degree of motor impairment irrespective of the affected or unaffected hand movements. The motor function also correlated with both contralesional SMA-M1 for the affected hand movement and contralesional SMA-ipsilesional M1 for the unaffected hand movement. (b) Motor excitability of the ipsilesional hemisphere significantly correlated with ipsilesional PMC-M1 during movement of the affected hand and interhemispheric M1-M1 inhibition. IL: ipsilesional hemisphere; CL: contralesional hemisphere.