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SPM analysis of the relationship between CMSD and S2. The GLM fitted was 1 + S0 + Age + Σi = 15Si + Site. The percentage change maps are derived from the S2 coefficient in the GLM: they show the percentage change in CMSD per standard deviation increase in S2. The corresponding p-maps are for F-tests on S2. The arrows indicate regions where the effects cannot be attributed to systematic misregistration.
