Dear Surfers, I am trying to use mris_fwhm to apply fwhm=0.66 to my fmri data (voxel size 1 mm iso)using the below command:
mris_fwhm --s <SBJ_NAME>--hemi rh --smooth-only --i fmcpr.sm0.self.projfrac_0.rh.nii.gz --fwhm 0.66 --o fmcpr.sm0p66_surf.self.projfrac_0.rh.nii.gz --mask /masks/brain.self.rh.nii.gz When I apply this command, it works without any error. The message on screen is as below: <SBJ_NAME> rh white Number of vertices 160391 Number of faces 320778 Total area 102725.085938 GroupSurface 0 AvgVtxArea 0.640467 AvgVtxDist 0.875515 StdVtxDist 0.253406 Loading mask masks/brain.self.rh.nii.gz Found 36045 voxels in mask Not Polynomial detrending Smoothing input by fwhm=0.660000, gstd=0.280276, niters=0 Only smoothing, so saving and exiting now But the outcome is the same as input. I think it is expected based on (niters=0). When I use the same command with fwhm =1, then i see the difference and niters=1. My question is, why is fwhm = 0.66 not acceptable? How can i solve this issue. Regards _____________________________________ Shahin Nasr Assistant Prof. in Radiology Harvard Medical School Martinos Imaging Center, MGH Bldg 149, 13th street, Charlestown, MA 02129 _______________________________________________ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
