SPM experts,
From spm emails, I found trial specific effects in result of DCM GUI is supplied by two factors:
1-B matrix 2- between trial effect defined by user. So it is possible user defines between trial in DCM panel as increase function but B matrix obtained from DCM be negative. Consequently, in result, we see connectivity decreases across trials!!! By this way, user hypothesis is correct or no? How this phenomenon could be explain?
Looking forward to hearing from you.
Best,
Pari
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