Table 1.

GM/CSF activation ratio in terms of mean beta coefficient across significant voxels.

Previous pre-processing	Beta GM/beta CSF before phase-correction	Beta GM/beta CSF after phase-correction	% change
+ filtering (#2–6)	0.76 ± 0.25	0.77 ± 0.19	+ 0.96%
+ motion r (#3–7)	0.80 ± 0.27	0.82 ± 0.24	+ 2.77%
+ physio r (#4–8)	0.90 ± 0.24	0.91 ± 0.24	+ 0.38%
+ CSF/WM r (#5–9)	0.98 ± 0.19	1.02 ± 0.25	+ 3.82%
(#11–12)	0.80 ± 0.25	0.82 ± 0.22	+ 1.59%