Table 2.

Table of unique and shared effects for three models corresponding to statistically significant clusters of interest at TFCE-level. Each TFCE-cluster is represented by its name according to AAL atlas and coordinates in MNI space. Unique effects included effects of i) Age, ii) CBF and iii) Performance. Common effects included shared signals between i) age and CBF (Age,CBF) , ii) age and performance (Age,Performance), iii) CBF and performance (CBF,Performance), and iv) age, CBF and performance (Age,CBF,Perfomance). In Model 1, Cattell activity was the dependent variable, while age, CBF and performance were dependent variables, and education and sex were covariates of no interest. Model 2 is the same as Model 1, but with anti-hypertensive medications added as covariate of no interest. Model 3 is the same as Model 1, but with educational attainment added as covariate of no interest. Significance was determined based on a null distribution of 5.000 permutations. Effects at p-value < 0.05 shown in bold font.

Cluster Name	Contrast Name	Model 1		Model 2		Model 3
		T-score	p-value	T-score	p-value	T-scare	p-value
R. Thalamus [6, 12,12]	Age	-0.37	0.356	-0.25	0.400	-0.31	0.379
	CBF	1.49	0.069	1.49	0.069	1.57	0.059
	Performance	3.32	<0.001	3.31	<0.001	3.03	<0.001
	Age,CBF	0.86	0.197	0.73	0.232	0.86	0.196
	Age,Performance	3.13	<0.001	2.57	0.005	2.56	0.006
	CBF,Performance	0.72	0.237	0.72	0.236	0.91	0.183
	Age,CBF,Performance	3.11	<0.001	2.48	0.007	2.94	0.002
L. Precuneus [-3, -66,30]	Age	3.50	<0.001	3.19	<0.001	3.49	<0.001
	CBF	-1.65	0.051	-1.64	0.051	-1.64	0.052
	Performance	-1.81	0.036	-1.80	0.036	-1.76	0.040
	Age,CBF	1.98	0.025	1.83	0.035	1.99	0.024
	Age,Performance	5.38	<0.001	4.35	<0.001	4.92	<0.001
	CBF,Performance	0.41	0.343	0.41	0.342	0.52	0.302
	Age,CBF,Performance	3.24	<0.001	2.52	0.006	3.15	<0.001
L. Superior Parietal Lobule [-21, -63,42]	Age	-4.64	0.000	-4.53	<0.001	-4.66	<0.001
	CBF	0.70	0.243	0.67	0.251	0.69	0.245
	Performance	3.07	<0.001	3.08	0.001	3.19	<0.001
	Age,CBF	1.31	0.096	1.27	0.103	1.31	0.097
	Age,Performance	8.24	<0.001	6.80	<0.001	7.85	<0.001
	CBF,Performance	0.77	0.222	0.76	0.225	0.77	0.220
	Age,CBF,Performance	3.72	<0.001	3.01	<0.001	3.48	<0.001
L. Middle Occipital Gyrus [-21, -87,0]	Age	-4.31	<0.001	-4.14	<0.001	-4.32	<0.001
	CBF	2.24	0.013	2.19	0.015	2.26	0.013
	Performance	0.77	0.221	0.77	0.220	0.91	0.183
	Age,CBF	2.95	0.002	2.85	0.002	2.95	0.002
	Age,Performance	4.93	<0.001	4.05	<0.001	4.82	<0.001
	CBF,Performance	-0.37	0.355	-0.37	0.357	-0.44	0.331
	Age,CBF,Performance	3.25	<0.001	2.58	0.005	2.99	0.002
L. Middle Cingulate Cortex [-12, -45, 30]	Age	3.67	<0.001	3.31	0.001	3.64	<0.001
	CBF	1.94	0.027	-1.94	0.027	1.96	0.026
	Performance	-1.89	0.030	-1.89	0.030	-1.77	0.039
	Age,CBF	2.09	0.019	1.96	0.026	2.11	0.018
	Age,Performance	5.86	<0.001	4.66	<0.001	5.22	<0.001
	CBF,Performance	-0.31	0.378	-0.30	0.381	0.23	0.409
	Age,CBF,Performance	2.96	0.002	2.34	0.010	2.93	0.002