Dear SPM's users,
I ran spm2 and spm8, respectively, for the same set of fMRI data. However, though I followed the same steps for the two versions of spm, there are considerable differences in the results. With spm8, no suprathreshold clusters were found with fdr(0.05) corrected, while with spm 2, more than 8 clusters survive the threshold (T values of height threshold are nearly the same for the two analysis).
I am unsure how to explain such a big difference between the results from two versions of spm.
I will be grateful for any help!