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Hello, VBM_tstatX is the raw t-statistic for t-contrast X in your model, VBM_tfce_corrp_tstatX contains the ( TFCE-corrected ) 1-p values for t-contrast X and is the main result you will want to look at, the exact number ( e.g. VBM_tfce_corrp_tstat1 ) depending on which contrast you want to see the results for. The randomise user guide: https://fsl.fmrib.ox.ac.uk/fsl/fslwiki/Randomise/UserGuide has a bit more information about the naming scheme used in the randomise outputs. Hope this helps, Kind Regards Matthew -------------------------------- Dr Matthew Webster FMRIB Centre John Radcliffe Hospital University of Oxford > On 4 Apr 2017, at 15:51, Henri Longin <[log in to unmask]> wrote: > > Dear all, > I'm doing a VBM and performing statistical analysis using randomise TFCE. > In results, I obtained 2 types of files: > > VBM_tfce_corrp_tstat1 > VBM_tfce_corrp_tstat2 > > and: > > VBM_tstat1 > VBM_tstat2 > > Sometimes I event obtained: > > VBM_tfce_corrp_tstat4 > VBM_tstat4.... > > > My questions are: > > 1) what is the difference between VBM_tfce_corrp_tstatX and VBM_tstatX? > 2) Which statistical number (VBM_tfce_corrp_tstat1 or VBM_tfce_corrp_tstat2, or ... VBM_tfce_corrp_tstat4) is recommanded to use? > > Thanks in advance > > Arsene