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Proceedings Paper

Super-sensitive stochastic resonance in a small-dimensional excitable network
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Paper Abstract

We study a system of globally coupled FitzHugh-Nagumo equations as a stochastic resonator. Each unit is either excitatory or inhibitory. If the numbers of units of both types are nearly equal (balanced coupling), we observe the presence of multistable oscillatory states with different excitation or firing rates. In the presence of noise, random transitions between high- and low-frequency oscillatory states are observed and the resultant firing pattern is long-range correlated. Compared to other coupling types, the system demonstrates considerably improved rate-coding ability for both subthreshold and suprathreshold signals, even with a tiny level of noise.

Paper Details

Date Published: 25 May 2004
PDF: 8 pages
Proc. SPIE 5467, Fluctuations and Noise in Biological, Biophysical, and Biomedical Systems II, (25 May 2004); doi: 10.1117/12.547050
Show Author Affiliations
Leonid A. Safonov, Univ. of Tokyo (Japan)
Japan Science and Technology Agency (Japan)
Yoshiharu Yamamoto, Univ. of Tokyo (Japan)
Japan Science and Technology Agency (Japan)


Published in SPIE Proceedings Vol. 5467:
Fluctuations and Noise in Biological, Biophysical, and Biomedical Systems II
Derek Abbott; Sergey M. Bezrukov; Andras Der; Angel Sanchez, Editor(s)

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