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Hi, If you are talking about the mean signal as the baseline regressor then I'm afraid the answer is no. We do not remove the mean signal via a regressor, but instead remove it from the signal and the model in the pre-statistical filtering. Hence we do not generate values or variances for it. But it is easy to calculate the mean using fslmaths and -Tmean on the original data if that is all you want. All the best, Mark On 23 Jun 2009, at 15:49, Luis Hernandez wrote: > Dear FSL experts, > > Is there a way to get FSL to dump the parameter estimate for the > baseline regressor into a file, like pe0? (It looks like the > mean_func file might do the trick ... is this right?) BUT more > importantly, how about its variance estimate? can that be dumped > out? FEAT writes out varcope files based on the specified contrasts > but I don't see how to make a contrast that uses the baseline > regressor, since it is kind of "hidden" ? > > I apologize if I missed something obvious. thanks in advance > > -Luis > > -- > ( http://www.eecs.umich.edu/~hernan ) >