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. Author manuscript; available in PMC: 2007 Mar 29.
Published in final edited form as: Magn Reson Med. 2006 Mar;55(3):706–711. doi: 10.1002/mrm.20805

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.