Title
Systematic fluctuation expansion for neural network activity equations
Abstract
Population rate or activity equations are the foundation of a common approach to modeling for neural networks. These equations provide mean field dynamics for the firing rate or activity of neurons within a network given some connectivity. The shortcoming of these equations is that they take into account only the average firing rate, while leaving out higher-order statistics like correlations between firing. A stochastic theory of neural networks that includes statistics at all orders was recently formulated. We describe how this theory yields a systematic extension to population rate equations by introducing equations for correlations and appropriate coupling terms. Each level of the approximation yields closed equations; they depend only on the mean and specific correlations of interest, without an ad hoc criterion for doing so. We show in an example of an all-to-all connected network how our system of generalized activity equations captures phenomena missed by the mean field rate equations alone.
Year
DOI
Venue
2010
10.1162/neco.2009.02-09-960
Neural Computation
Keywords
Field
DocType
rate equation,algorithms,neural network,artificial intelligence,mean field,action potentials
Applied mathematics,Population,Mathematical optimization,Models of neural computation,Mean field theory,Connectivity,Statistics,Order statistic,Artificial neural network,Independent equation,Traffic equations,Mathematics
Journal
Volume
Issue
ISSN
22
2
0899-7667
Citations 
PageRank 
References 
33
1.56
20
Authors
3
Name
Order
Citations
PageRank
Michael A. Buice1422.41
Jack D. Cowan2527529.18
Carson C. Chow345360.03