Thank you for your interest in Braph and I hope that it will prove to be a helpful tool for your research.
ICA is currently not implemented in Braph and needs to be performed by an external software. However, once the original sources with their time courses have been reconstructed by ICA, they could be imported in BRAPH in order to conduct the graph analysis on the resulting networks.
I hope that this information helps you. If there is anything more I can do for you, please do not hesitate to contact me.