Table 2B. Percent changes in coherence function of BOLD signal before and after preprocessing.

	Low pass	Global	White matter	CSF	All	Main effect (F)	Global vs. white matter	Global vs. CSF	Global vs. low pass
Regions of interest (ROIs)	Mean±s.d.	Mean±s.d.	Mean±s.d.	Mean±s.d.	Mean±s.d.	P-value	P-value	P-value	P-value
Global↔R-ICC	−0.73±4.2	−55.4±13.6	−40.7±15.9	−12.8±12.5	−56.7±14.2	<0.001	0.065	<0.001	<0.001
Global↔R-Hip	−2.58±1.8	−46.1±16.8	−40.7±20.6	−11.1±13.2	−48.4±20.5	<0.001	1.000	<0.001	<0.001
Global↔R-LOC	−3.09±4.4	−40.2±14.9	−35.9±9.9	−6.7±7.4	−45.1±11.6	<0.001	1.000	<0.001	<0.001
Global↔L-LOC	−2.73±4.3	−39.2±16.2	−30.6±14.2	−4.8±6.5	−40.9±13.1	<0.001	0.808	<0.001	<0.001
R-ICC↔L-ICC	0.29±1.2	−9.8±9.6	−5.0±5.7	−1.0±2.1	−9.9±9.8	<0.001	0.860	0.024	0.006
R-Hip↔L-Hip	−0.22±1.3	−23.4±18.0	−14.3±15.6	−2.9±8.6	−20.0±15.1	<0.001	0.968	0.004	0.001
R-LOC↔L-LOC	0.16±0.9	−14.7±8.9	−12.6±8.5	−1.1±1.7	−15.6±7.6	<0.001	1.000	<0.001	<0.001
R-Hip↔R-ICC	−0.09±5.8	−35.6±25.9	−24.7±22.9	−5.8±13.4	−37.3±23.8	<0.001	1.000	0.006	0.001
R-Hip↔R-LOC	0.59±7.2	−33.6±24.3	−32.0±22.6	−10.2±12.9	−33.0±27.9	<0.001	1.000	0.071	0.001
R-Hip↔L-LOC	0.87±8.9	−30.9±30.4	−28.7±32.2	−9.0±13.4	−36.5±22.7	0.001	1.000	0.261	0.016
R-ICC↔L-LOC	4.34±9.5	−22.7±29.8	−34.0±22.0	−9.2±9.9	−24.4±29.6	0.001	1.000	1.000	0.040
R-ICC↔R-LOC	4.89±10.5	−22.5±32.2	−37.2±19.6	−7.5±13.1	−22.5±29.7	<0.001	1.000	1.000	0.046

BOLD, blood oxgen level dependent; CSF, cerebrospinal fluid; ICC, isthums of cingulate cortex; Hip, hippocampus; LOC, lateral occipital cortex; R, right side; L, left side. Bold represents P<0.05 after Bonferroni correction. Values are mean±standard deviation. P-values represent the results of one-way analysis of varianceof the ROI. The effects of each preprocessing step as well as all of the steps combined are presented. Coherence function was derived from 0.016 to 0.078 Hz.