Hello SPM Experts, I am reading the VBM8 toolbox manual and just wanted to confirm that I understand this. Under Modulated Normalized, Non-Linear Only is equivalent to: 1. Affine + Non-linear with "No" overall grand mean scaling and "Proportional" Normalization. 2. Affine + Non-linear with ICV as a nuisance covariate. Q1: If so, does that mean that I do not use "Proportional" Normalization when using non-linear only? Q2: If so, does that mean I do use "Overall Grand Mean Scaling" when using non-linear only? I am currently using Non-linear only without ICV as a covariate, without "Overall Grand Mean Scaling," and without "proportional" normalization. Is this recommended? Cheers!