Table 2.

Relationship between dynamic functional connectivity and structural connectivity.

Participant ID	R(D−FCstrength, SC)			R(D−FCvariability, SC)
	AAL-90		H-1024	AAL-90		H-1024
	Session 1	Session 2	Session 1	Session 1	Session 2	Session 1
1	n.a.	0.27	n.a.	n.a.	−0.07	n.a.
2	0.33	0.30	0.20	−0.05b	−0.18	−0.13
3	0.28	0.25	0.15	−0.12	−0.14	−0.09
4	0.28	0.23	0.22	−0.18	−0.15	−0.15
5	0.25	0.29	0.21	−0.12	−0.07	−0.12
6a	0.27	0.26	0.21	−0.14	−0.17	−0.13
7	0.30	0.26	0.19	−0.08	−0.10	−0.12
8	0.23	0.33	0.18	−0.07	−0.16	−0.05
9	0.24	0.28	0.21	−0.14	−0.10	−0.14
10	0.28	0.27	0.21	−0.10	−0.10	−0.12
11	0.29	0.37	0.22	−0.17	−0.20	−0.13
Mean ± std	0.28 ± 0.03	0.28 ± 0.04	0.20 ± 0.02	−0.12±0.04	−0.14±0.05	−0.12±0.03

For both low-resolution (AAL-90) and high-resolution (H-1024) brain networks, significantly different D-FC strength and variability were observed between region pairs with direct SC and those without direct SC for most participants (ps < 0.05, 10,000 permutations). R_{(D−FC strength, SC)} and R_{(D−FC variability, SC)} represent Pearson's correlations of SC strength vs. D-FC strength and D-FC variability, respectively, confined to region pairs with direct SC. Significant correlation (p < 0.05) was observed for almost all participants.

For Session 1, the structural and functional relationship was inferred for only 10 participants (ID: 2–11) that possessed both R-fMRI and DTI data. n.a denotes DTI data were not available.

^aSignificant difference in D-FC variability was not observed between region pairs with direct SC and those without direct SC (p > 0.05, 10,000 permutations) (ID: 6 in Session 1, in the AAL-90 brain networks).

^bD-FC variability did not exhibit significant correlation with SC strength (p > 0.05).