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Proceedings Paper

Coherence resonance in an autapse neuron model with time delay
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Paper Abstract

We study the noise activated dynamics of a model autapse neuron system that consists of a subcritical Hopf oscillator with a time delayed nonlinear feedback. The coherence of the noise driven pulses of the neuron exhibits a novel double peaked structure as a function of the noise amplitude. The two peaks correspond to separate optimal noise levels for excitation of single spikes and multiple spikes (bursts) respectively. The relative magnitudes of these peaks are found to be a sensitive function of time delay. The physical significance of our results and its practical implications in various real life systems are discussed.

Paper Details

Date Published: 15 June 2007
PDF: 9 pages
Proc. SPIE 6602, Noise and Fluctuations in Biological, Biophysical, and Biomedical Systems, 66020Q (15 June 2007); doi: 10.1117/12.724513
Show Author Affiliations
Gautam C. Sethia, Institute for Plasma Research (India)
Jürgen Kurths, Univ. of Potsdam (Germany)
Abhijit Sen, Institute for Plasma Research (India)


Published in SPIE Proceedings Vol. 6602:
Noise and Fluctuations in Biological, Biophysical, and Biomedical Systems
Sergey M. Bezrukov, Editor(s)

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