Hi Martin,
Many thanks for your reply.
So concatenation is complete.
One question though, just for the sake of example, if I extract one of these imaginary coherence matrices (before 2019 algorithm; 68x68) I get a data structure 2346x1x30.
I understand this is the upper triangular part, however, why are there 30 frequency components? How do I get the structure I see in brainstorm when I select 'display as image'.
I see now the image displayed in brainstorm is the first frequency component.
So when you calculate coherence you have a choice of frequency resolution (2Hz) and highest frequency of interest (60Hz). I only want to find coherence in alpha band. Do I average in the 2Hz frequency bins corresponding to alpha 8-12Hz?
Thanks!
-Tom.