Fig 4. Communication regimes in the ISD model.

A: We generated a configuration of 127 cells with mean polygon number 6. Here cells are coloured according to the values of their exchange rate γ with the central cell (coloured in red), normalized to the maximum γ_max. This is shown in the local (D = 10 μm²/s, left panel) and global (D = 1000 μm²/s, right panel) communication regime. B: Mean and standard deviation of the exchange rates with the central cell of the configuration shown in panel A (y axis), for the n-th neighbours (x axis). Circles represent values obtained from the simulations, while the crosses are the analytical estimations. Four different combinations of parameters are used, corresponding to strong/weak and global/local communication regimes. Parameter values: α = 1.0 s⁻¹ and α = 100.0 s⁻¹ for weak and strong communication; D = 10 μm²/s and D = 1000 μm²/s for local and global communication, respectively.