Dear Francois,
I have some questions to consult when calculating connectivity on the source signals.
Process 1: when I use MN: EEG (unconstr) 2018 to compute connectivity,
,
the result is as follows:
Process 2A: if the source signals are mapped into the scouts (select uncontrained sources: Norm of the three orientations (x,y,z)), then extract the scouts signals, to compute the connectivity, the process and result are as follows:
Process 2B: as the process 2A, but this process don't select the uncontrained sources: Norm of the three orientations (x,y,z), result is as follows:
Computing source using contrained sources orientation, process 1 and 2 will get the same result. As recommened in the tutorial, when computing connectivity based on sources, using contrained sources is easier. However, when I try to compute connectivity based on unconstrained cources, the results of the prcess 1, 2A and 2B are very different, I wonder to know which result is accurate and reliable, and what the difference is between process 1 and 2? And whether I did something wrong with these processes. Can you give me some suggestions?
Best regards!