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Dear John et al., I have used DARTEL to normalise functional data. Given that DARTEL produces huge files when normalising whole EPI runs, I ran the GLM on unsmoothed data in the subject space and wapred the contrast images for the random effects analysis. this makes several things a bit trickier for rookies like myself, as I will explain..... I want to be able to inverse warp a single set of coordinates (i.e. a single voxel coordinate) from MNI space, back to each of the individual subject spaces in order to perform a functional connectivity analysis using an ROI derived from a peak found in the group analysis. Is there a way I can use the DARTEL transform to perform forward and backward warps of a single coordinate set? Using segment is was previously possible to do this with get_orig_coord5.m This would be VERY useful for a number of things I do. Looking forward to your repsonses Richard