Hi Hongyu, No, all you need to do is to switch the group-level contrast from +1s to -1s! Eugene 2009/4/21 Hongyu Yang <[log in to unmask]> > w run, right? What should I do for the > higher analysis, group analysis? Same as the original one? I am not sure > about > it. Maybe I need to set a different contrast for deactivation group > analysis? > > I appreciate your response. > -- Eugene Duff FMRIB Centre, University of Oxford John Radcliffe Hospital, Headington OX3 9DU Oxford UK Ph: +44 (0) 1865 222 739 Fax: +44 (0) 1865 222 717 --