Test-Retest Reliability of Graph Metrics in Functional Brain Networks: A Resting-State fNIRS Study
Figure 4
Reliability analysis of RSFC maps.
The first to third columns correspond to the data derived from HbO, HbR, and HbT, respectively. (A, B) The TRT reliability of RSFC maps and their corresponding reliability distributions. The reliability displays approximately normal configuration for all 1035 (i.e., 46×45/2) connections. The connections exhibit good reliability across HbO (mean ICC values 0.70), HbR (0.65) and HbT (0.71). (C) The relationship between RSFC strength and reliability as assessed by scatterplots. Each dot represents the group-level RSFC strength and the corresponding ICC value at the same connections. The trend lines were obtained by a linear least-squares fit method. Significant (p<0.05) positive correlations were found for HbO and HbR signals, suggesting stronger RSFC leads to higher reliability for both these signals.