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Novo paper submetido para ENTROPY

Self-Organized Supercriticality and Oscillations in Networks of Stochastic Spiking Neurons

Networks of stochastic spiking neurons are interesting models in the area of Theoretical Neuroscience, presenting both continuous and discontinuous phase transitions. Here we study fully connected networks analytically, numerically and by computational simulations. The neurons have dynamic gains that enable the network to converge to a stationary slightly supercritical state (self-organized supercriticality or SOSC) in the presence of the continuous transition. We show that SOSC, which presents power laws for neuronal avalanches plus some large events, is robust as a function of the main parameter of the neuronal gain dynamics. We discuss the possible applications of the idea of SOSC to biological phenomena like epilepsy and dragon king avalanches. We also find that neuronal gains can produce collective oscillations that coexists with neuronal avalanches, with frequencies compatible with characteristic brain rhythms.

Comments: 16 pages, 16 figures divided into 7 figures in the article
Subjects: Adaptation and Self-Organizing Systems (nlin.AO)
Cite as: arXiv:1705.08549 [nlin.AO]
(or arXiv:1705.08549v1 [nlin.AO] for this version)

Meu seminário no Imperial College


A Perturbadora Persistência do Determinismo Social



Um texto de 2001 que não perdeu a atualidade. Preciso apenas dar um upgrade nas referências.

O dowload pode ser feito aqui.

Folha de S.Paulo – Ciência – Estudo genético liga inteligência a risco de ter autismo

sexta-feira, 27 de março de 2015

As mesmas alterações de DNA que tornam uma pessoa propensa a desenvolver autismo –transtorno mental que afeta a sociabilidade e comunicabilidade–
Continua: http://www1.folha.uol.com.br/ciencia/2015/03/1608776-estudo-genetico-liga-inteligencia-a-risco-de-contrair-autismo.shtml

Range dinâmico olfatório

Figure 1 Ca2+ imaging shows that each pheromone component activates a single glomerulus in the MGC.


Heterogeneity and Convergence of Olfactory First-Order Neurons Account for the High Speed and Sensitivity of Second-Order Neurons


  • Jean-Pierre Rospars mail,
  • Alexandre Grémiaux,
  • David Jarriault,
  • Antoine Chaffiol,
  • Christelle Monsempes,
  • Nina Deisig,
  • Sylvia Anton,
  • Philippe Lucas,
  • Dominique Martinez
  • Published: December 04, 2014
  • DOI: 10.1371/journal.pcbi.1003975

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