Dear FLSers, We would like to know if someone could explain what mask is commonly used in False Discovery Rate program? Here is the command line we saw from the web page: fdr -i 1_minus_grot_vox_p_tstat1 -m mask -q 0.05 Is this mask selecting for only the voxels to be used for the calculation, ie an R0I or is it a mask selecting for the whole brain? Also, we were wondering if its possible to calculate FDR from the raw t statistical data from randomise as opposed to using the uncorrected p values? We appreciate any help you can provide! -Sandra Sandra Woodman Mood and Motor Control Laboratory Athinoula Martinos Center for Biomedical Imaging Massachusetts General Hospital 120 6th St. Charlestown, MA 02129 Tel: 617-643-6245 Fax: 617-726-1351 Email: [log in to unmask] The information in this e-mail is intended only for the person to whom it is addressed. If you believe this e-mail was sent to you in error and the e-mail contains patient information, please contact the Partners Compliance HelpLine at http://www.partners.org/complianceline . If the e-mail was sent to you in error but does not contain patient information, please contact the sender and properly dispose of the e-mail.