Per Bruce's suggestion, I'm reposting this now. A synopsis: I'm looking for a way to correct painted statistical maps for multiple comparisons using Freesurfer's tools, without having segmentation or any .xfm files.

Thanks, Clark

On Aug 23, 2012, at 10:09 AM, Clark Fisher wrote:

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