Hi evryone and Alfonso,
i would like to use the graph theory analysis in conn in order to answer some of my research questions.
In particular, I am trying to understand if a certain network of brain regions change with age and if its relationship with cognition change with age.
To do that I had:
1) selected my ROIs
2) computed the graph theory measures using correlation coefficient and tresholding theedges to .15
3) exported the data.

In the exported data I have one line per subject with the measures for the network overall and for each node.
I have some questions about this:
1) does it make any sense to correlate network-wise and single node measures with behavioral data ?
2) how would I compare networks for different age groups ? Should I use some multivariate analysis (e.g. MANOVA including all the network measures as DV and the group as IV) ?
3) for some of the subjects some measures are missing (NaN), why does this happen ? Can I just remove these subjects ?

Thanks a lot for any answer!

Alain