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Universidade Estadual de Ponta Grossa - PR
Campus Uvaranas



Future Events

VI Workshop on Nonlinear Dynamics

15 - 17 July 2024, UNESP, Brazil

XLIV Dynamics Days Europe

Título: Fractional Tumour‑Immune Model with Drug Resistance

Speaker: Ana Paula da Silva Koltun

Bremen, July 29 - August 2, 2024 - Germany

V Congresso Brasileiro Interdisciplinar em Ciência e Tecnologia

Título: Estudo do modelo de Mcsharry para reprodução de sinais de eletrocardiograma

Speaker: Patrício Cardoso

26 - 30 August, 2024 - Brazil

33rd Annual Computational Neuroscience Meeting - CNS*2024

Título: Chimera states in Hodgin-Huxley networks with slow potassium and calcium currents

Speaker: Diogo Leonai

26 - 30 August, 2024 - Brazil

Abstract: Neuroplasticity, also known as brain plasticity or neuronal plasticity, allows the brain to improve its connections or rewire itself. The synaptic modifications can help the brain to enhance fitness, to promote existing cognitive capabilities, and to recover from some brain injuries. Furthermore, brain plasticity has impacts on neuronal synchronisation. In this work, we build a neuronal network composed of coupled Rulkov neurons with excitatory connections randomly distributed. We consider burst-timing-dependent plasticity to investigate the effects of external perturbations, such as periodic and random pulses, on the neuronal synchronous behaviour. The plasticity changes the synaptic weights between the presynaptic and postsynaptic neurons, and as a consequence the burst synchronisation. We verify that the external periodic and random pulsed perturbations can induce synchronisation and desynchronisation states. One of our main results is to demonstrate that bursting synchronisation and desynchronisation in a network with burst-timing-dependent plasticity can emerge according to alterations of the initial synaptic weights. Furthermore, we show that external periodic and random pulsed currents can be an effective method to suppress neuronal activities related to pathological synchronous behaviour.

105 Seminar's 

Speaker: MSc. Elaheh Sayari

Title: Dynamics of a perturbed random neuronal network with burst-timing-dependent plasticity

Date: 21 October 2022

Place: UEPG and online


It is a pleasure for us of the 105 group to receive your visit to our site. You are welcome and invited to visit our website, our personal profiles, look at our work and write us emails if you wish.

State of Paraná

Where the group was born


         Paraná is one of the 26 states of Brazil, located in the south of the country, bordered on the north by São Paulo state, on the east by the Atlantic Ocean, on the south by Santa Catarina state and the province of MisionesArgentina, and on the west by Mato Grosso do Sul and Paraguay, with the Paraná River as its western boundary line.

    It is subdivided into 399 municipalities. Its capital is the city of Curitiba. Other major cities are LondrinaMaringáPonta GrossaCascavelSão José dos Pinhais and Foz do Iguaçu. Crossed by the Tropic of Capricorn, Paraná has what is left of the Araucaria forest, one of the most important subtropical forests in the world. At the border with Argentina is the National Park of Iguaçu, considered by UNESCO as a World Heritage site. At only 40 km (25 mi) from there, at the border with Paraguay, the largest dam in the world was built, the Hidroelétrica de Itaipu (Itaipu Hydroelectric Dam). The crime rate is considered low by Brazilian standards and the state is one of the most developed in the nation.

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