Dear experts,
is there a simple solution to define a corrected extent threshold for F-contrasts (generated with SPM or GLMflex)? At "Aaron's fMRI matlab tools" google group I found the following:
"To do a cluster-wise correction, you need to determine the extent criteria (look at SPM output, run peak_nii, use 3dClustSim)."
Looking at the SPM output does not work, as it does not provide any pFWEc for F-contrasts. Unfortunately I have problems understanding peak_nii. Which files do I have to enter, which commands do I have to use? Do I have to define thresholds for each of the contrast of an ANOVA (say factor 1, factor 2, interaction) separately or is the threshold the same for any contrast?
Thank you very much for any helpful comments!
Best,
Helmut
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