Hello Bettina, Please contact me off list see about fixing your installation of PickAtlas. Ben Wagner ANSIR Lab ________________________________ From: SPM (Statistical Parametric Mapping) [mailto:[log in to unmask]] On Behalf Of Bettina Studer Sent: Saturday, May 07, 2011 12:45 PM To: [log in to unmask] Subject: [SPM] SPM8 combine an exclusive and and inclusive mask Dear all I have a problem with an ROI analysis I am trying to run in SPM8. Here is what I want to do: I want to check which voxels are NOT commonly activated in two contrasts (derived from different models) in predefined ROIs. So essentially I want to mask contrast1 with contrast2 using the exclusive function and then limit this to the ROIs, ie an inclusive mask of an ROI-image from WFU_Pickatlas. Unfortunately WFU_Pickatlas doesn't work properly on the version of SPM8 we have (it doesn't load the ROI-analysis prompt), however I thought I could get around this by just entering the ROI_image I have previously saved from Pickatlas in the SPM8 masking command. But this means I have to mask contrast1 using an EXCLUSIVE mask with contrast2 and an INCLUSIVE mask with the ROI. How do I do this? I can select two images, but can only apply them either both as an inclusive or both as an exclusive mask. Any help would be greatly appreciated! Yours sincerely, Bettina Studer ********************************************************************** Bettina Studer PhD Student Department of Experimental Psychology University of Cambridge Downing Street, Cambridge, CB2 3EB, UK. Tel (+44) 01223 333560 Email [log in to unmask]<mailto:[log in to unmask]>