Dear Alfonso and experts,

I am trying to find the difference in dynamic functional connectivity of 22 subjects. Each subject has 2 sessions of 'rest', hence I have given the two sessions as two conditions rest1 and rest2. I am interested in finding the dynamic functional connectivity of the subjects in both conditions separately and the difference between them. I figured that this was not possible in CONN since the dynamic decomposition step first gives me warnings that the matrix is singular to working precision or badly scaled and RCOND is NaN, and then ends in an error that NaN or Inf cannot be used.

When I processed both the sessions in two separate conn projects each worked just fine. So I have been able to obtain the dynamic functional connectivity seprately for both but I want to visualize the graphs and connectivity maps of the connections which are significantly different between both sessions.

I read on one of the previous posts that the PPI code in CONN doesn't have an option to find the connectivity independently in each condition, if there are multiple conditions. But you mentioned that the difference could be processed. Please let me know if there is any work around for this. Any help would be greatly appreciated.

Thanks
Shukti