Table 2.

Nonparametric correlations between motor function and structural connectivity of a priori ROIs

	Behavioral measures
Structural connectivity of a priori ROIs	BBTAff (n = 42)	GripAff (n = 42)	Arm MIAff (n = 40)	Leg MIAff (n = 42)	Gait speed (n = 40)
Ipsilesional Hemisphere
M1 ↔ PMC	0.35	0.24	0.28	0.17	0.10
M1 ↔ SMA	0.42*	0.46*	0.41	0.38	0.25
PMC ↔ SMA	0.31	0.22	0.22	0.14	−0.05
M1 ↔ CP	0.74*	0.67*	0.67*	0.63*	0.55*
PMC ↔ CP	0.45*	0.30	0.45*	0.41	0.34
SMA ↔ CP	0.66*	0.56*	0.63*	0.63*	0.54*
M1 ↔ RN	0.53*	0.49*	0.49*	0.43*	0.24
PMC ↔ RN	0.35	0.28	0.35	0.34	0.23
SMA ↔ RN	0.52*	0.42*	0.46*	0.45*	0.38
M1 ↔ Thalamus	0.65*	0.56*	0.61*	0.66*	0.54*
PMC ↔ Thalamus	0.39	0.21	0.37	0.37	0.23
SMA ↔ Thalamus	0.65*	0.57*	0.63*	0.64*	0.46*
Basal Ganglia & Cerebellum
Caudate ↔ Thalamus	0.05	−0.07	0.10	0.10	−0.09
Putamen ↔ Thalamus	0.37	0.36	0.27	0.40	0.43*
GP ↔ Thalamus	0.23	0.29	0.25	0.33	0.36
Cerebellum ↔ Thalamus	0.50*	0.51*	0.43*	0.48*	0.39
Interhemispheric Connectivity
M1 ↔ M1	0.46*	0.30	0.31	0.30	0.14
PMC ↔ PMC	0.24	0.01	0.16	0.08	0.06
SMA ↔ SMA	0.35	0.14	0.22	0.21	0.23

Values in the table are Spearman's coefficients (r).

Abbreviations: ROIs, regions of interest; BBT_Aff, Box and Block Test (affected extremity); Grip_Aff, grip strength (affected extremity); Arm MI_Aff, Arm Motricity Index score (affected extremity); Leg MI_Aff, Leg Motricity Index score (affected extremity); M1, primary motor cortex; PMC, premotor cortex; SMA, supplementary motor area; CP, cerebral peduncle; RN, red nucleus; GP, globus pallidus.

*Significant at corrected P ≤ 0.003.