Seed map - HELP from a newbie

Hi,

I have a very little knowledge in neuroiaging analysis, which means I am quite desperate right now.
I am trying to create a cortical network seedmap. I currently have a network “map,” but I just have no idea what the seedmap is. I’ve read comments where other people mention it, but it seems like I’m the only one who doesn’t know what that is. I would love any comments on this.

Thanks in advance!

Best,
MJ