Ines Grozdanović

University of Belgrade, Belgrade, SE, Serbia

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Publications (6)7.06 Total impact

  • Source
    edited by Aleksandar Ivić, Nikola Burić, Slobodan Prvanović, 12/2013; University of Belgrade Faculty of Transport and Traffic Engineering and Faculty of Mining and Geology., ISBN: 978-86-7395-317-5
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    ABSTRACT: The minimal two-dimensional model of bursting neuronal dynamics is used to study the influence of time-delay on the properties of synchronization of bursting neurons. Generic properties of bursting and dependence of the stability of synchronization on the time-lag and the strength of coupling are described, and compared with the two common types of synaptical coupling, i.e., time-delayed chemical and electrical synapses.
    Chinese Physics B 01/2012; 21(1). · 1.15 Impact Factor
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    ABSTRACT: Influence of small time-delays in coupling between noisy excitable systems on the coherence resonance and self-induced stochastic resonance is studied. Parameters of delayed coupled deterministic excitable units are chosen such that the system has only one attractor, namely the stationary state, for any value of the coupling and the time-lag. Addition of white noise induces qualitatively different types of coherent oscillations, and we analyzed the influence of coupling time-delay on the properties of these coherent oscillations. The main conclusion is that time-lag τ≥1, but still smaller than the refractory period, and sufficiently strong coupling drastically change signal to noise ratio in the quantitative and qualitative way. An interval of noise values implies quite large signal to noise ratio and different types of noise induced coherence are greatly enhanced. We also observed coincident spiking for small noise intensity and time-lag proportional to the inter-spike interval of the coherent spike trains. On the other hand, time-lags τ<1 and/or weak coupling induce negligible changes in the properties of the stochastic coherence. KeywordsNeurons–Delay–Noise
    Journal of Statistical Physics 01/2011; 145(1):175-186. · 1.40 Impact Factor
  • Nikola Burić, Ines Grozdanović, Nebojša Vasović
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    ABSTRACT: Two delayed coupled excitable systems with internal delays are studied. For different parametric values each of the isolated units displays excitable, bi-stable or oscillatory dynamics. Bifurcational relations among coupling time-lag and coupling constant for different values of the internal time-lags are obtained. Possible types of synchronization between the units in typical dynamical regimes are studied.
    Chaos Solitons & Fractals 01/2008; · 1.50 Impact Factor
  • Nikola Burić, Ines Grozdanović, Nebojša Vasović
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    ABSTRACT: Excitable and oscillatory dynamics of delayed locally coupled type I and type II excitable systems is analyzed. Diffusive and sigmoid coupling have been considered. It is shown that the stability and the patterns of exactly synchronous oscillations depend on the type of excitability and the type of coupling. However, within the same class, characterized by the excitability type and the coupling the dynamics qualitatively depends only on whether the number of units is even or odd.
    Chaos Solitons & Fractals 01/2005; · 1.50 Impact Factor
  • Nikola Burić, Ines Grozdanović, Nebojša Vasović
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    ABSTRACT: Bifurcations and typical dynamics of an in-homogeneous chain of excitable systems with delayed coupling are compared with the corresponding homogeneous system, recently studied in the Ref. [Phys. Rev. E 67 (2003) 066222]. It is shown that the typical features of the long term dynamics are robust with respect to small random in-homogeneity in the parameters. However, some atypical features related to more complicated bifurcations of the stationary solution could be different.
    Chaos Solitons & Fractals 01/2004; 22(3):731-740. · 1.50 Impact Factor

Publication Stats

25 Citations
7.06 Total Impact Points

Institutions

  • 2011
    • University of Belgrade
      • Faculty of Mining and Geology
      Belgrade, SE, Serbia
  • 2005
    • University of Montenegro
      • Faculty of Pharmacy
      Podgorica, Opstina Podgorica, Montenegro