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Order–disorder transition in the Chialvo–Bak ‘minibrain’ controlled by network geometry

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  • Wakeling, Joseph

Abstract

We examine a simple biologically motivated neural network, the three-layer version of the Chialvo–Bak ‘minibrain’ (Neurosci. 90 (1999) 1137), and present numerical results which indicate that a non-equilibrium phase transition between ordered and disordered phases occurs subject to the tuning of a control parameter. Scale-free behaviour is observed at the critical point. Notably, the transition here is due solely to network geometry and not any noise factor. The phase of the network is thus a design parameter which can be tuned. The phases are determined by differing levels of interference between active paths in the network and the consequent accidental destruction of good paths.

Suggested Citation

  • Wakeling, Joseph, 2003. "Order–disorder transition in the Chialvo–Bak ‘minibrain’ controlled by network geometry," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 325(3), pages 561-569.
    • Handle: RePEc:eee:phsmap:v:325:y:2003:i:3:p:561-569
    DOI: 10.1016/S0378-4371(03)00147-X
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