Brain folding shapes the branching pattern of the middle cerebral artery
Fig 2
Dependence of network structure on vascular conditions.
We explored the effects of three variables in the structure of the network: (A) the fraction rout of the blood that leaves the Sylvian fissure, (B) the fraction rfr of the blood that leaves the fissure to irrigate the frontal lobe and (C) the current variability (standard deviation σ from unity currents feeding the fissure). For each ratio, we generated 200 locally optimal networks, for which we computed the bifurcation distance (the exit of the fissure is at distance 1) and the number of loops in the vascular network. Colors in the right bottom panel indicate independent loops.