Dear FSL users and experts,
We have quite a basic question; apologies we could not find this on a previous thread.
We have run two dual_regression scripts, without randomise, with the same component input, same GLM but some of the subjects were different. In the first dual_regression, we put 4 subjects (A, B, C, D), and in the second dual_regression we put 1 of the previous subjects plus 3 new subjects (A, E, F, G). We opened the stage_1 text file for the common subject (subject A) and were surprised to find that although the shape of the time-courses are almost identical, there are some tiny differences in the shape and the actual values were quite different from each other.
So, we were wondering, is there some kind of averaging process across subjects which occurs during stages 1 & 2 which explains this?
Many thanks in advance for your help.
Kind regards,
Lucia
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