Table 16.

Test-retest reliability of adult functional connectivity studies.

Paper	Age(s) at First Test	Sample Size	Paradigm	Time to Retest	Functional Connectivity Measure(s)	Frequency Band	Reliability (ICC)
Cannon et al. (2012)	Mean age of 20.7 years	N = 19	Resting-state	30 days	Coherence	Delta	0.88
						Theta	0.91
						Alpha	0.93
						Beta	0.94
					Phase Lag Index	Delta	0.09
						Theta	0.35
						Alpha	0.57
						Beta	0.49
Hardmeier et al. (2014)	20–49.5 years	N = 35	Resting-state	follow up at 1 and 2 years	Phase Lag Index	Theta	0.75
						Alpha	0.77
						Beta	0.69
					Clustering Coefficient	Theta	0.61
						Alpha	0.51
						Beta	0.56
					Path Length	Theta	0.60
						Alpha	0.42
						Beta	0.45
					Small-World Index	Theta	0.53
						Alpha	0.45
						Beta	0.54
Hatz et al. (2016)	20–68 years	N = 40	Resting-state	follow up at 1 and 2 years	Clustering Coefficient	Theta	0.80
						Alpha	0.70
						Beta	0.44
					Path Length	Theta	0.62
						Alpha	0.66
						Beta	0.43
					Degree Correlation	Theta	0.20
						Alpha	0.21
						Beta	0.07
					Degree Diversity	Theta	0.79
						Alpha	0.76
						Beta	0.42
Kuntzelman and Miskovic (2017)	18–22 years	N = 15	Resting-state	1 week	Coherence	Delta	0.51
						Theta	0.66
						Alpha	0.30
						Beta	0.09
						Gamma	0.02
					Phase Lag Index	Delta	0.18
						Theta	0.47
						Alpha	0.59
						Beta	0.59
						Gamma	0.21
Büchel et al. (2021)	Mean age of 24.5 years	N = 15	Resting-state	1 week	Weighted Phase Lag Index	Theta	0.52
						Alpha-1 (8–10.5 Hz)	0.90
						Alpha-2 (10.5–13 Hz)	0.73
						Beta-1 (13–20 Hz)	0.72
						Beta-2 (20–30 Hz)	0.52
					Coherence	Theta	0.73
						Alpha-1 (8–10.5 Hz)	0.88
						Alpha-2 (10.5–13 Hz)	0.87
						Beta-1 (13–20 Hz)	0.84
						Beta-2 (20–30 Hz)	0.82