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Yes. It's a common problem and currently no solution. Although, a colleague and I are working on a solution. Basically, you have to change the design matrix at each voxel similar to the BPM toolbox. Best Regards, Donald McLaren ================= D.G. McLaren, Ph.D. Postdoctoral Research Fellow, GRECC, Bedford VA Research Fellow, Department of Neurology, Massachusetts General Hospital and Harvard Medical School Office: (773) 406-2464 ===================== This e-mail contains CONFIDENTIAL INFORMATION which may contain PROTECTED HEALTHCARE INFORMATION and may also be LEGALLY PRIVILEGED and which is intended only for the use of the individual or entity named above. If the reader of the e-mail is not the intended recipient or the employee or agent responsible for delivering it to the intended recipient, you are hereby notified that you are in possession of confidential and privileged information. Any unauthorized use, disclosure, copying or the taking of any action in reliance on the contents of this information is strictly prohibited and may be unlawful. If you have received this e-mail unintentionally, please immediately notify the sender via telephone at (773) 406-2464 or email. On Wed, Dec 1, 2010 at 9:02 AM, Erica Julson <[log in to unmask]> wrote: > Hey guys, > > I am having trouble with masking on the group level. From what I can tell, > on the group level, only the intersection of all the individual first level > masks is analyzed. This is a problem because if just one subject has, for > example, OFC dropout, the OFC is excluded from analyses for ALL subjects! Is > this a common problem? Is there any way to circumvent this and tell SPM to > analyze the whole brain for all subjects? > > I've done some digging on this topic in the archives. I've seen this > problem brought up before, but no solutions presented. Has anything changed? > > Thanks! > > --Erica >