Hello, I am currently trying to run FEAT on relative CBF images. I ran the flameo command to obtain zstat and tstat images and the next steps are smoothest and cluster? For smoothest, should the degrees of freedom be the number of timepoints (merged images) -2 = 14? Also, when running cluster, would be this be appropriate to obtain significant cluster differences for my pre/post intervention?
cluster --in zstat --thresh 2.3 --oindex clust_index --othresh zthresh -p 0.95 -d "number from smoothest"
Is the zthresh image that is output my significant clusters? If I wanted to do an ROI analysis of just the hippocampus, would it be appropriate to run a t-test on the zstat or tstat extracted values? Thank you in advance, I am sorry if these questions are very basic.
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