Journal
INTERNATIONAL JOURNAL OF NEURAL SYSTEMS
Volume 21, Issue 5, Pages 415-425Publisher
WORLD SCIENTIFIC PUBL CO PTE LTD
DOI: 10.1142/S0129065711002924
Keywords
Excitement; synchronization; neuronal; network; small-world; short-term synaptic plasticity
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Funding
- National Natural Science Foundation of China [61075105, 11102038, 11002103, 10972001]
- Shanghai Education Development Foundation [10CG33]
- Ministry of Education of China [200802550007]
- Major Program for the Fundamental Research of Shanghai [09JC1400700]
- Shanghai Municipal Education Commission [09zz66]
- Chinese Universities Scientific Fund
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Excitement and synchronization of electrically and chemically coupled Newman-Watts (NW) small-world neuronal networks with a short-term synaptic plasticity described by a modified Oja learning rule are investigated. For each type of neuronal network, the variation properties of synaptic weights are examined first. Then the effects of the learning rate, the coupling strength and the shortcut-adding probability on excitement and synchronization of the neuronal network are studied. It is shown that the synaptic learning suppresses the over-excitement, helps synchronization for the electrically coupled network but impairs synchronization for the chemically coupled one. Both the introduction of shortcuts and the increase of the coupling strength improve synchronization and they are helpful in increasing the excitement for the chemically coupled network, but have little effect on the excitement of the electrically coupled one.
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