Firing activity of complex space-clamped FitzHugh-Nagumo neural networks |
| |
Authors: | D. Q. Wei X. S. Luo Y. L. Zou |
| |
Affiliation: | (1) College of Physics and Electronic Engineering, Guangxi Normal University, Guilin, 541004, P.R. China |
| |
Abstract: | We investigate how firing activity of complex neural networks depends on the random long-range connections and coupling strength. Network elements are described by excitable space-clamped FitzHugh-Nagumo (SCFHN) neurons with the values of parameters at which no firing activity occurs. It is found that for a given appropriate coupling strength C, there exists a critical fraction of random connections (or randomness) p*, such that if p > p* the firing neurons, which are absent in the nearest-neighbor network, occur. The firing activity becomes more frequent as randomness p is further increased. On the other hand, when the p is smaller, there are no active neurons in network, no matter what the value of C is. For a given larger p, there exist optimal coupling strength levels, where firing activity reaches its maximum. To the best of our knowledge, this is a novel mechanism for the emergence of firing activity in neurons. |
| |
Keywords: | KeywordHeading" >PACS. 87.18.Sn Neural networks 89.75.Fb Structures and organization in complex systems 89.75.Hc Networks and genealogical trees |
本文献已被 SpringerLink 等数据库收录! |
|