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Annual rate of GWC and tissue signal intensity changes. Annual rate of GWC and tissue signal intensity changes after FWE correction for multiple comparisons. Displayed results are thresholded at P < 0.01 vertex‐wise and P < 0.05 cluster‐based (Bonferroni corrected). Blue‐Lightblue scale indicates GWC or signal intensity longitudinal decline (in P‐values).
