| Texto completo | |
| Autor(es): Mostrar menos - |
Souza, Diogo L. M.
;
Borges, Fernando S.
;
Gabrick, Enrique C.
;
Bentivoglio, Lucas E.
;
Protachevicz, Paulo R.
;
dos Santos, Vagner
;
Viana, Ricardo L.
;
Caldas, Ibere L.
;
Iarosz, Kelly C.
;
Batista, Antonio M.
;
Kurths, Juergen
Número total de Autores: 11
|
| Tipo de documento: | Artigo Científico |
| Fonte: | JOURNAL OF PHYSICS-COMPLEXITY; v. 5, n. 2, p. 10-pg., 2024-06-01. |
| Resumo | |
Spiral waves are spatial-temporal patterns that can emerge in different systems as heart tissues, chemical oscillators, ecological networks and the brain. These waves have been identified in the neocortex of turtles, rats, and humans, particularly during sleep-like states. Although their functions in cognitive activities remain until now poorly understood, these patterns are related to cortical activity modulation and contribute to cortical processing. In this work,, we construct a neuronal network layer based on the spatial distribution of pyramidal neurons. Our main goal is to investigate how local connectivity and coupling strength are associated with the emergence of spiral waves. Therefore, we propose a trustworthy method capable of detecting different wave patterns, based on local and global phase order parameters. As a result, we find that the range of connection radius (R) plays a crucial role in the appearance of spiral waves. For R < 20 mu m, only asynchronous activity is observed due to small number of connections. The coupling strength (g(syn)) greatly influences the pattern transitions for higher R, where spikes and bursts firing patterns can be observed in spiral and non-spiral waves. Finally, we show that for some values of R and g(syn) bistable states of wave patterns are obtained. (AU) | |
| Processo FAPESP: | 22/04251-7 - Estruturas Fractais em Física de Plasmas |
| Beneficiário: | Iberê Luiz Caldas |
| Modalidade de apoio: | Auxílio à Pesquisa - Pesquisador Visitante - Brasil |
| Processo FAPESP: | 18/03211-6 - Dinâmica não linear |
| Beneficiário: | Iberê Luiz Caldas |
| Modalidade de apoio: | Auxílio à Pesquisa - Temático |
| Processo FAPESP: | 20/04624-2 - Plasticidade sináptica em redes neuronais |
| Beneficiário: | Paulo Ricardo Protachevicz |
| Modalidade de apoio: | Bolsas no Brasil - Pós-Doutorado |