Hello Surfers,

I am trying to verify the p-value sig.mgh maps outputted from the mri_glmfit command as the first part of a more advanced analysis.  We have been extracting the thickness data for a single vertex from each of our 58 subjects in two control groups and then running a significiance analysis is SAS.  We thought that the output from SAS should match the p-value in the sig.mgh file, but the p-values do not match at all.  We have tested multiple data points.  Does freesurfer do some sort of a more advanced significance analysis that is not in the standard documentation?

Thank you very much,
Jeff Sadino

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