Dear all
I am a new beginner of DCM (PEB) for fMRI. I have some questions regarding the contrast between conditions that serve as inputs for modulatory B. For example, I have two conditions, condition 1 and condition 2. I want to see whether the contrast between condition 1 and 2 (e.g., condition 1 - condition 2) can serve as significant input. So, I create a GLM design with 3 conditions 1, 2, and 1-2. However, when I open this design.mat using DCM. I can only find the condition 1 and 2, but not 1-2. (e.g., attachment). Could you guide me on how to use condition 1 - condition 2 as input?
Thanks for your time.
Best,
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