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Resting-state fMRI data preprocessing for assessing subject-specific G-causality between the left and right brain hemispheres. (A) fMRI data segmented into 90 ROIs according to the AAL atlas. (B) Separation of the ROIs as belonging to the left or right hemisphere. (C) Construction of the functional brain networks time series for the left and right hemispheres. (D) Identification of G-causality between the left and right hemispheres.
