unfortunately we don’t have good support yet for estimating statistical significance of connectivity structures. There are discussions / efforts underway to do this, e.g.
- [ENH, WIP] Add Estimation of Significant Connectivity by alexrockhill · Pull Request #101 · mne-tools/mne-connectivity · GitHub
- A good tutorial on "statistics in connectivity estimation" · Issue #35 · mne-tools/mne-connectivity · GitHub
and you might also want to check out GitHub - microsoft/graspologic: Python package for graph statistics to see if it fits your use case.
cc @adam2392 in case you have more to add.