Dear SPMexperts,
I am having a hard time understanding how to include the time and dispersion derivatives in my model. I have 5 conditions and I added the time and dispersion derivatives in my model at the first level.
If I want to create a contrast comparing the first and the second condition, do I have to create a T-contrast that looks like this [1 0 0 -1 0 0] or an F contrast which looks like this:
[1 0 0 -1 0 0 ;
0 1 0 0 -1 0;
0 0 1 0 0 -1]
Thank you in advance,
Ariadna
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