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Variance of the global signal was related to the value of rGC at ROI_A (rGC A) (rho = 0.34, p = 0.038, by Spearman’s method) (A) and the value of rGC at ROI_B (rGC B) (rho = 0.51, p = 0.0014) (B). Variance of the mean white matter signal was not related to the value of rGC at ROI_A (rho = 0.29, p = 0.09) (C) or ROI_B (rho = 0.27, p = 0.11) (D).
