On Self-Organized Criticality and Synchronization in Lattice Models of   Coupled Dynamical Systems
  Lattice models of coupled dynamical systems lead to a variety of complex behaviors. Between the individual motion of independent units and the collective behavior of members of a population evolving synchronously, there exist more complicated attractors. In some cases, these states are identified with self-organized critical phenomena. In other situations, with clusterization or phase-locking. The conditions leading to such different behaviors in models of integrate-and-fire oscillators and stick-slip processes are reviewed. 
C. J. P\'erez, A. Corral, A. D\'iaz-Guilera, K. Christensen, and A.   Arenas