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被PRE接受发表文章一篇: 神经系统中振动共振新机制

已有 2663 次阅读 2012-7-2 21:23 |系统分类:论文交流| 文章, 神经系统

 
Vibrational resonance induced by transition of  phase-locking modes in excitable systems

AUTHOR(s): Yang,Lijian / Liu,Wangheng / Yi,Ming(通讯作者)
Abstract: We study the occurrence of vibrational resonance as well as the underlying mechanism in excitable
systems. The single vibration resonance and vibration bi-resonance are observed when tuning the
amplitude and frequency of high-frequency force simultaneously. Furthermore, by virtue of the
phase diagram of low-frequency-signal-free FitzHugh-Nagumo model, it is found that each maxima
of response measure is located exactly at the transition boundary of phase patterns, therefore, it
is the transition between different phase-locking modes that induces vibrational resonance in the
excitable systems. Finally, this novel mechanism is verified in the Hodgkin-Huxley neural model.
Our results provide new insights into the transmission of weak signals in nonlinear systems, which
are valuable in engineering for potential applications


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