Hi Freesurfers,

I have another monkey-specific question. I'd like to output FDR-corrected signficance surface maps for my monkey data, or at least FDR-threshold the maps. It seems like mri_surfcluster might be one way to go about this however: 1) I don't have any .xfm files for my monkeys, as I'm working in native space, and 2) Without segmentation, I don't have a good mask to use for the cortex only.

My first attempts at work-arounds would be: 1)Try to create an identity .xfm file 2)Use the cortical ribbons from mris_volmask as a cortex mask

Should these work? If so, how should I make an identity .xfm file? If not, is there another way to FDR correct my surface data?

Thanks, Clark