Journal of Computational Neuroscience

, Volume 18, Issue 3, pp 333–342 | Cite as

Surprising Effects of Synaptic Excitation

  • Jonathan E. RubinEmail author


Typically, excitatory synaptic coupling is thought of as an influence that accelerates and propagates firing in neuronal networks. This paper reviews recent results explaining how, contrary to these expectations, the presence of excitatory synaptic coupling can drastically slow oscillations in a network and how localized, sustained activity can arise in a network with purely excitatory coupling, without sustained inputs. These two effects stem from interactions of excitatory coupling with two different forms of intrinsic neuronal dynamics, and both serve to highlight the fact that the influence of synaptic coupling in a network depends strongly on the intrinsic properties of cells in the network.


synaptic excitation firing frequency delayed escape way-in way-out function canard localized activity go surface 


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© Springer Science + Business Media, Inc. 2005

Authors and Affiliations

  1. 1.Department of Mathematics and Center for the Neural Basis of CognitionUniversity of PittsburghPittsburgh

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