Dear SPM users,

I am studying resting state MEG with csd-DCM, and I am interested in
dynamics of effective connectivity, thus I estimated a large number of
time-window level DCMs.

However, there are too many underestimated DCMs, which show under 80%
explained variance, therefore I want to re-estimate those underestimated
DCMs with better prior.
For saving computing time, I will only re-estimate underestimated DCMs.

When I tested with two DCMs, different prior results the spm_dcm_peb.m code
error, and all of the second level parameters have NaN values.

At this point, I have *two questions*.

1. Is it possible to running spm_dcm_peb.m code with DCMs using different

2. In order to match the priors, can I use spm_dcm_reduce.m or
spm_log_evidence_reduce.m code for changing prior and posterior of
re-estimated DCM?
If the two priors have the same size of parameters, I guess that the code
might be working, but I am not sure that this is the right way to do.

I would be thankful that you could help me solve this problem.

Best Regards,