Hello, It is not clear to me exactly what you want to do. If you have run a group FEAT and wish to limit your results to a specific ROI, then you will want to use Featquery: http://fsl.fmrib.ox.ac.uk/fsl/fslwiki/FEAT/UserGuide#Featquery_-_FEAT_Results_Interrogation An example of featquery usage is given in the FSL course: http://fsl.fmrib.ox.ac.uk/fslcourse/lectures/practicals/feat1/#featquery Kind Regards Matthew > Dear FSL, > > I would like to calculate the change in normalized for different subject brain activity using Atlas as mask > > how to go with this > > should i want to create Cluster and fslmaths to create mask > or > Atlasquery -a "atlas" -m mskname > or > > fslmeants or fslstats > > > > > > > -- > ___________________________________________________________ > > Regards, > Aiyappan > PhD Scholar > TUM, Munich, Germany