 |
 |
Hello, I'm looking for a bit of assistance with the DCM script provided by SPM's website. Matlab is throwing an error whenever I run the script that says 'Error in inline expression ==> spm_int(P,M,U).' I believe my DCM.b and DCM.c matrices may be incorrect... Our model includes three regions (A, B, C) and two factors (1, 2). Regional connections: A <--> B <--> C Factor 1 modulates A --> B and C --> B Factor 1 is also an input --> A Given that model, I set up the following matrices: DCM.a = [1 1 0; 1 1 1; 0 1 1]; DCM.b = zeros(3,3,2); DCM.b(2,1,1) = 1; DCM.b(3,2,1) = 1; DCM.c = [1 0 0; 0 0 0; 0 0 0]; DCM.d = zeros(3,3,0); I'm not entirely sure why the matrices are incorrect. Can anyone spot the issue? Please let me know if that is unclear and I will try to clarify. Thanks!