Fig. 1

The activity of network with (a and b) N = 100 or c N = 500 and γ = 0.375. Around 10⁷ (a and b and 10⁹) c random numbers were required until the network reaches the absorbent state. d Histogram normalized of the time t of extinction for N = 50 and gamma = 0.35 for 10,000 turns compared with the function exp(−t) in red