Journal
PHYSICAL REVIEW E
Volume 78, Issue 6, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevE.78.061917
Keywords
neural nets
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Funding
- CNPq (Conselho Nacional de Desenvolvimento Cient fico e Tecnologico)
- FAPERGS (Fundaao de Amparo a Pesquisa do Estado do Rio Grande do Sul)
- CAPES (Coordenaao de Aperfei oamento de Pessoal de Nivel Superior)
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We investigate the dynamical states of a two-dimensional network of Hindmarsh-Rose spiking neurons, in the vicinity of the current threshold where the single neuron becomes active. Each neuron is electrically coupled with neurons in its close neighborhood. The existence of multistable synchronization states is established and discussed. We also show that, provided adequate initial conditions, the collective behavior is able to keep the network in activity, even for current values far below the activity threshold of the single neuron. A phase diagram of the different network states is presented for a large interval of the coupling-current parameter space.
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