Emergence of a dominant unit in a network of chaotic units with delayed   synaptic change
  We study here a model of globally coupled units with adaptive interaction weights which has a delay in the updating rule. Simulations show that the model with such delayed synaptic change exhibits dynamical self-organization of network structure. With suitably chosen parameters, "dominant" unit emerges spontaneously, in the sense that the connection from such unit to almost all of the other units are especially strengthened. Such weight structure facilitates the coherent activity among units. 
Junji Ito and Toru Ohira