Figure 2: Surrogate test of the correlation between ReHo and ReHoV.
From: Characterizing dynamic local functional connectivity in the human brain
(a) Example of the original fMRI time series (above) from two adjacent voxels, and their surrogate data (below); (b–d) joint PDFs between ReHo and ReHoV across all voxels of one exemplar subject from the real fMRI data, the phase-randomized data, and the smoothed phase-randomized data, respectively; (e) the spatial correlation between ReHo and ReHoV in the original fMRI data, their phase-randomized surrogate data, and their smoothed phase-randomized surrogate data, respectively. Error bars indicate variances across subjects.
