Dear SPMers:
When I utilized the DCM to detect the emotional effect on connectivities, I specified the models with the positive stimuli and negative stimuli on the connectivities respectively. In the result matrix, the DCM give me two matrix with the parameters of modulatory effects of negative and positive stimuli separately. Now I'd like to get the total effect of emotion (positive and negative) on one connectivity. How could I get it? THX
best wishes,
Daiming
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