Thanks so much. I wasn't able to get that from what I found. Actually, Guillame Flandin pointed out to me that it is a simple statistical error that I had too few degrees of freedom. I feel very silly now for posting such an obvious flaw in my use of statistics. Thanks all and take care! Chaleece Chaleece Sandberg, M.A. Lab Manager Aphasia Research Laboratory Doctoral Student Speech Language and Hearing Sciences Boston University Sargent College On Fri, Apr 22, 2011 at 9:14 AM, Stephen J. Fromm <[log in to unmask]> wrote: > If you look at the list archives, it seems like the most common reason this type of error occurs is that you're doing a VBM analysis and you didn't threshold the maps properly. > >