Journal
CHAOS
Volume 24, Issue 1, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4866974
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Funding
- National Science Foundation [PHY-0653086]
- Arctic Region Supercomputing Center at the University of Alaska Fairbanks
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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. (C) 2014 AIP Publishing LLC.
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