Current reinforcement model reproduces center-in-center vein trajectory of Physarum polycephalum.Vein networks span the whole body of the amoeboid organism in the plasmodial slime mould Physarum polycephalum, and the network topology is rearranged within an hour in response to spatio-temporal variations of the environment. 
Current reinforcement model
Current reinforcement model reproduces center-in-center vein trajectory of Physarum polycephalum.Vein networks span the whole body of the amoeboid organism in the plasmodial slime mould Physarum polycephalum, and the network topology is rearranged within an hour in response to spatio-temporal variations of the environment. 
Physarum polycephalum
It has been reported that this tube morphogenesis is capable of solving mazes, and a mathematical model, named the 'current reinforcement rule', was proposed based on the adaptability of the veins. 
current reinforcement rule