@Francois Thank you for your quick reply!
I have been able to calculate CTFs for all my sources using this method. Next, I averaged the cross talk functions over the 60 ROIs (selection from Desikan-Killiany atlas) that I calculated from these sources. Does this matrix correctly represent cross-talk between all the parcels in my analysis?
Another post on this topics mentions whitened data. However, I don't think this is applicable to my analysis. Could you confirm that?
https://neuroimage.usc.edu/forums/t/resolution-matrix/755
Jord