-epi_base max


For the -epi_base parameter in, there are the options of mean, median and max. My question is - max(/mean/median) of what? Is it the sub-brick with the maximal contrast? Or is it the maximum of something else?



These are voxelwise statistics across all TRs of the input EPI dataset as if you ran 3dTstat separately on the EPI dataset. The max is the maximum values across the EPI dataset.