Table 3.

Correlations of age, the T1w/T2w ratio, and diffusion metrics in regions of interest^{^a}

	1	2	3
L arcuate fasciculus (nodes 73–88)
1. Age	—
2. T1w/T2w ratio	−0.64^***	—
3. FA	0.05	0.02	—
L arcuate fasciculus (nodes 40–85)
1. Age	—
2. T1w/T2w ratio	−0.67^***	—
3. MD	0.38^***	−0.45^***	—
R arcuate fasciculus (nodes 51–75)
1. Age	—
2. T1w/T2w ratio	−0.60^***	—
3. MD	0.32^**	−0.43^***	—
L frontoparietal SLF (nodes 1–11)
1. Age	—
2. T1w/T2w ratio	−0.69^***	—
3. MD	0.30^**	−0.39^***	—
R frontoparietal SLF (nodes 84–100)
1. Age	—
2. T1w/T2w ratio	−0.74^***	—
3. MD	0.29^**	−0.33^***	—

↵^aT1w/T2w ratio and diffusion metrics were averaged across the relevant nodes. L, Left; R, right.
↵**p < 0.01;
↵***p < 0.001.