Hi, SPMers. When I used getpsth tool, I got error messages. I tried to find where the problem come, but I don't know. How can I correct this thing? ??? Attempted to access u(:,1); index out of bounds because size(u)=[0,0]. Error in ==> getpsth>my_regions at 543 u = u(:,1); Error in ==> getpsth at 152 [PSTH.xY, SPM, SPMfileTmp] = my_regions(xY,SPM); Thanks in advance, Chobok -- Chobok Kim e-mail: [log in to unmask]