The values in the mgh file should be -log10(abs(CWP)). Would that explain the discrepancy?
James N Porter wrote:
Hello-
When I look at the CWP results of mri_surfcluster in the sig.cluster.sum versus the resultant sig.cluster.mgh, the results are different. Specifically, all clusters negatively correlated with my independent variable display a value in tksurfer of -1+CWP, and clusters that are positively correlated display a value of 1-CWP.
Which values should I believe as my actual p-values, the .sum's CWP or the .mgh's added/subtracted values?
Thanks for your help,
Jim Porter Graduate Student Clinical Science & Psychopathology Research University of Minnesota
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