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. Author manuscript; available in PMC: 2010 Dec 1.
Published in final edited form as: Neuroimage. 2009 May 14;47(4):1448–1459. doi: 10.1016/j.neuroimage.2009.05.012

Table 1. Correlations between the global signal and RVHRCOR physiological regressors, white matter ROI signal, and CSF ROI signal.

Correlation coefficients between the global (whole-brain average) signal and the RVHRCOR regressors, white matter ROI signal, and CSF ROI signal for each subject's 8-min resting state scan. ‘RVx’ refers to the RV signal convolved with the respiration response function, and ‘HRx’ refers to the HR signal convolved with the cardiac response function.

subject RVx v. global (r) HRx v. global (r) White v. global (r) CSF v. global (r)

1 0.25 ** 0.43 ** 0.45 ** -0.08
2 0.46 ** 0.44 ** 0.39 ** 0.37 **
3 0.48 ** 0.35 ** 0.50 ** 0.33 **
4 0.34 ** 0.49 ** 0.25 ** 0.46 **
5 0.44 ** 0.24 ** -0.02 -0.05
6 -0.10 0.44 ** 0.34 ** 0.23 **
7 0.11 0.31 ** 0.57 ** 0.27 **
8 0.45 ** 0.15 * 0.04 0.05
9 0.57 ** -0.03 0.19 * 0.11
10 0.69 ** -0.15 0.35 ** 0.30 **
11 0.10 -0.06 -0.02 0.03
12 0.52 ** 0.31 ** 0.04 -0.36 **
13 0.17 * 0.21 ** 0.44 ** -0.08
14 0.08 0.09 0.07 -0.15
15 -0.03 0.18 * 0.08 -0.15
**

p<0.001 (r>0.20);

*

p<0.01 (r>0.15)