Hi SPM experts,
In my fMRI experiment, one scanning run consisted of 3 randomised conditions(A,B,C), each with 10 repetitions. Each subject received 3 scanning runs, with an inter-run interval of 3 minutes. My aim is to obtain average group activation for each condition.
My idea is that, in each subject, first I perform 3 first-level models separately to model conditions A,B and C. But I don't know then how can I "average" each condition across the 3 runs to perform subsequent group analysis for all subjects. Can someone help? Thanks in advance.
Mark
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