The #connectome may be important, but it does not seem to help understand neuronal activity patterns:
"Comprehensive neuronal identification enabled us to examine the relationship between whole-brain activity and the connectome but we found no strong correlations between them."
https://doi.org/10.1016/j.cell.2020.12.012
Replication: https://doi.org/10.1016/j.cub.2022.06.039
The structure of a nervous system is one thing, but its relation to NS function seems to be much more tenuous than we may have hoped for.