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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Alterations in brain connectivity due to plasticity and synaptic delay

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Author(s):
Lameu, E. L. [1] ; Macau, E. E. N. [1, 2] ; Borges, F. S. [3] ; Iarosz, K. C. [3] ; Caldas, I. L. [3] ; Borges, R. R. [4] ; Protachevicz, P. R. [5] ; Viana, R. L. [6] ; Batista, A. M. [7, 3, 5]
Total Authors: 9
Affiliation:
[1] Natl Inst Space Res, Sao Jose Dos Campos, SP - Brazil
[2] Univ Fed Sao Paulo, Sao Jose Dos Campos - Brazil
[3] Univ Sao Paulo, Inst Phys, Sao Jose Dos Campos - Brazil
[4] Fed Technol Univ Parana, Dept Math, Ponta Grossa, PR - Brazil
[5] Univ Estadual Ponta Grossa, Sci Postgrad, Ponta Grossa, PR - USA
[6] Univ Fed Parana, Dept Phys, Curitiba, PR - Brazil
[7] Univ Estadual Ponta Grossa, Dept Math & Stat, Ponta Grossa, PR - Brazil
Total Affiliations: 7
Document type: Journal article
Source: European Physical Journal-Special Topics; v. 227, n. 5-6, SI, p. 673-682, SEP 2018.
Web of Science Citations: 1
Abstract

Brain plasticity refers to brain's ability to change neuronal connections, as a result of environmental stimuli, new experiences, or damage. In this work, we study the effects of the synaptic delay on both the coupling strengths and synchronization in a neuronal network with synaptic plasticity. We build a network of Hodgkin-Huxley neurons, where the plasticity is given by the Hebbian rules. We verify that without time delay the synapses become regulated by both the nature (excitatory or inhibitory) and the frequency of the presynaptic and postsynaptic neuron. A presynaptic excitatory (inhibitory) neuron with higher (lower) frequency enhances the synaptic strength if the postsynaptic excitatory (inhibitory) neuron has lower (higher) frequency. When the delay is increased the network presents a non-trivial topology. Regarding the synchronization, only for small values of the synaptic delay this phenomenon is observed. (AU)

FAPESP's process: 16/23398-8 - Synaptic plasticity in neuronal networks with time delay
Grantee:Ewandson Luiz Lameu
Support type: Scholarships in Brazil - Post-Doctorate
FAPESP's process: 15/50122-0 - Dynamic phenomena in complex networks: basics and applications
Grantee:Elbert Einstein Nehrer Macau
Support type: Research Projects - Thematic Grants
FAPESP's process: 17/18977-1 - Analysis of electrical synapses contribution in neuronal synchronization
Grantee:Fernando da Silva Borges
Support type: Scholarships in Brazil - Post-Doctorate
FAPESP's process: 15/07311-7 - Dynamic behaviour of neural networks
Grantee:Kelly Cristiane Iarosz
Support type: Scholarships in Brazil - Post-Doctorate
FAPESP's process: 11/19296-1 - Nonlinear dynamics
Grantee:Iberê Luiz Caldas
Support type: Research Projects - Thematic Grants
FAPESP's process: 17/13502-5 - Synchronisation in time-delayed networks with synaptic plasticity
Grantee:Ewandson Luiz Lameu
Support type: Scholarships abroad - Research Internship - Post-doctor
FAPESP's process: 17/20920-8 - Plasticity in neuronal networks
Grantee:Kelly Cristiane Iarosz
Support type: Scholarships abroad - Research Internship - Post-doctor