SELF-ORGANIZED CRITICALITY IN A CELLULAR-AUTOMATON MODEL OF PULSE-COUPLED INTEGRATE-AND-FIRE NEURONS

We have introduced a cellular automaton to investigate self-organized criticality in the activity of neural populations. The model is compos ed of pulse-coupled integrate-and-fire neurons and stimulated by conti nuous driving. Under an appropriate condition, the system is found to exhibit a robust self-organized critical behaviour accompanied with th e large-scale synchronized activities among the units. It indicates th e close relationship between self-organized criticality and synchroniz ation.