Table 1.
Percent Variance of PC1 Spectra, % λ1, in Regions of Parietal GM, Frontal GM, and WM Before and After Spectral Alignment
| % λ1 before alignment | % λ1 after alignment | P values* | |
|---|---|---|---|
| Parietal GM | 72.91 ± 8.10 | 83.53 ± 6.33 | <0.0001 |
| Frontal GM | 71.09 ± 8.51 | 81.75 ± 8.58 | <0.0001 |
| WM | 71.03 ± 9.14 | 84.47 ± 6.69 | <0.0001 |
P values are for two-sided t test.