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摘要:Coherence resonance(CR) is an important stochastic phenomenon in the nervous system and is usually evoked from the resting state or subthreshold oscillations near bifurcation point. In the present paper, complex stochastic dynamics including double-CRs or anti-CR evoked from a bursting behavior is simulated in the modified FitzHugh-Nagumo model. In absence of noise, the model with different parameters exhibits different bursting patterns with behavior alternating between burst containing multiple spikes and long quiescent state. Double-CRs can be evoked from some bursting patterns, while anti-CR can be induced from other bursting patterns, which shows complex stochastic dynamics of bursting patterns. With fast-slow variable dissection method combined bifurcations or dynamical behaviors of the fast subsystem, the complex stochastic dynamics for different bursting patterns can be well explained. The results are novelty for nonlinear dynamics, which are helpful for understanding the potential functions of brain neurons that of always exhibit bursting behaviors and receive synaptic noise.
会议名称:

第八届国际振动工程会议

会议时间:

2021-07-24

会议地点:

中国上海

  • 专辑:

    基础科学

  • 专题:

    生物学

  • DOI:

    10.26914/c.cnkihy.2021.016499

  • 分类号:

    Q42-33

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