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Hello Hankee, FDR does not generate a "corrected p-value" -- this is a common misconception. FDR returns a p-value threshold such that if you threshold at that p-value, the expected number of false-positive voxels or vertices is equal to the selected "false discovery rate" (typically denoted by the value "q"). cheers, Mike H. > Hi, > We have performed FDR correction using surface_fdr command for > hippocampus. We can see two output files named "NE-R_Hipp1_pvals.vtk" > and "NE-R_Hipp1_Fthresh.vtk"; > > As we can see in file "NE-R_Hipp1_Fthresh.vtk", I know that those poinsts > who > did not survive FDR correction was set to zero; I wonder whether the > p-value > in the "NE-R_Hipp1_pvals.vtk" file is corrected p-value or not since it is > generated by command "surface_fdr". > > Thanks a lot! > > Best regards, > > Hankee > -- Michael Harms, Ph.D. -------------------------------------------------------------------- Conte Center for the Neuroscience of Mental Disorders Washington University School of Medicine Department of Psychiatry, Box 8134 Renard Hospital, Room 6615 Tel: 314-747-6173 660 South Euclid Ave. Fax: 314-747-2182 St. Louis, MO 63110 Email: [log in to unmask] --------------------------------------------------------------------