Transient spatiotemporal chaos in the Morris-Lecar neuronal ring network
- Department of Physics, University of Alaska, Fairbanks, Alaska 99775-5920 (United States)
Transient behavior is thought to play an integral role in brain functionality. Numerical simulations of the firing activity of diffusively coupled, excitable Morris-Lecar neurons reveal transient spatiotemporal chaos in the parameter regime below the saddle-node on invariant circle bifurcation point. The neighborhood of the chaotic saddle is reached through perturbations of the rest state, in which few initially active neurons at an effective spatial distance can initiate spatiotemporal chaos. The system escapes from the neighborhood of the chaotic saddle to either the rest state or to a state of pulse propagation. The lifetime of the chaotic transients is manipulated in a statistical sense through a singular application of a synchronous perturbation to a group of neurons.
- OSTI ID:
- 22250930
- Journal Information:
- Chaos (Woodbury, N. Y.), Vol. 24, Issue 1; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 1054-1500
- Country of Publication:
- United States
- Language:
- English
Similar Records
Impact of weak excitatory synapses on chaotic transients in a diffusively coupled Morris-Lecar neuronal network
Electrical coupled Morris-Lecar neurons: From design to pattern analysis