8th Brazilian Meeting on Simulational Physics | |
Information processing occurs via critical avalanches in a model of the primary visual cortex | |
Bortolotto, G.S.^1 ; Girardi-Schappo, M.^1 ; Gonsalves, J.J.^1 ; Pinto, L.T.^2 ; Tragtenberg, M.H.R.^1 | |
Departamento de Física, Universidade Federal de Santa Catarina, Florianópolis | |
SC | |
88040-900, Brazil^1 | |
Departamento de Engenharia Química e de Alimentos, Universidade Federal de Santa Catarina, Florianópolis | |
SC | |
88040-900, Brazil^2 | |
关键词: Critical exponent; Excitatory post synaptic potentials; Network structures; Primary visual cortex; Scaling relations; Synaptic parameters; Thermodynamic limits; Visual stimulus; | |
Others : https://iopscience.iop.org/article/10.1088/1742-6596/686/1/012008/pdf DOI : 10.1088/1742-6596/686/1/012008 |
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来源: IOP | |
【 摘 要 】
We study a new biologically motivated model for the Macaque monkey primary visual cortex which presents power-law avalanches after a visual stimulus. The signal propagates through all the layers of the model via avalanches that depend on network structure and synaptic parameter. We identify four different avalanche profiles as a function of the excitatory postsynaptic potential. The avalanches follow a size-duration scaling relation and present critical exponents that match experiments. The structure of the network gives rise to a regime of two characteristic spatial scales, one of which vanishes in the thermodynamic limit.
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