In this letter, we study the effect of a unique initial stimulation on random recurrent networks of leaky integrate-and-fire neurons. Indeed, given a stochastic connectivity, this so-called spontaneous mode exhibits various nontrivial dynamics. This study is based on a mathematical formalism that allows us to examine the variability of the afterward dynamics according to the parameters of the weight distribution. Under the independence hypothesis (e.g., in the case of very large networks), we are able to compute the average number of neurons that fire at a given timethe spiking activity. In accordance with numerical simulations, we prove that this spiking activity reaches a steady state. We characterize this steady state and explore the transients.
Spontaneous Dynamics of Asymmetric Random Recurrent Spiking Neural Networks
Published 2004 in Neural Computation
ABSTRACT
PUBLICATION RECORD
- Publication year
2004
- Venue
Neural Computation
- Publication date
2004-11-17
- Fields of study
Mathematics, Physics, Computer Science, Medicine
- Identifiers
- External record
- Source metadata
Semantic Scholar, PubMed
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