I used the following command for group analysis on a result of surface-based searchlight decoding .
3dttest++ -singletoneA 0.5 -setB 01.niml.dset 02.niml.dset 03.niml.dset … 30.niml.dset
Then, I tried to visualize the result using SUMA; however, the p-value is not shown (N/A) as in the figure below.
Why can’t I see the p-values of corresponding t-values? How can I interpret these t-values without p-values?
I know that there is a step after 3dttest++ for multiple comparisons correction using slow_surf_clustsim.py that I can get some p-values, but I was wondering whether it is possible to get uncorrected p-values of result from 3dttest++ or not?