Has anyone come across a diagram (2D, 3D, maybe even interactive) of the connectiontions between cortex regions? Especially, the diagram should display the strength and direction of those connections (but not every single axon). I am interested in information like "Brodmann area 7 receives heavy connections from area 1,2,3 and 17,18", displayed in a neatly arranged way.
If there is no diagram that fulfills my need, is there another source of information, like a table, where I can find that sort of information?
Edit: After some more research I found this paper which contains some interesting diagrams in its appendix. However, this paper does not describe the human brain.