Hi,
yesterday I updated SPM 8 r4290 to r4467. After hesitating for a long time because our MRI scanning of two large cohorts is still going on and initially I didn't wanted to change software inbetween.
But when I looked through the notes what's new on the current version I recognized that there were quite a number of really nifty changes that justified the effort to preprocess the 3000 scans again.
When I recalculated one of our analysis I observed differences in the cluster-level p-values (p_FWE-corr and p_uncorr) all the other columns are the same. Can't say anything about cluster-level q_FDR-corr since the column is empty like in the previous SPM release.
Since the manual is not so detailed in the explanation of the whole brain statistics output, I hope that someone can point out to me what method in the background changed the p-values between the versions.
Thank you very much!
Best wishes,
Katharina
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