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We have decided to discontinue the publication of preprints on our preprint server as of 1 March 2024. The publication culture within mathematics has changed so much due to the rise of repositories such as ArXiV (www.arxiv.org) that we are encouraging all institute members to make their preprints available there. An institute's repository in its previous form is, therefore, unnecessary. The preprints published to date will remain available here, but we will not add any new preprints here.

MiS Preprint
64/1999

Complete synchronization in coupled neuromodules of different types

Frank Pasemann and Thomas Wennekers

Abstract

We discuss the parametrized dynamics of two coupled recurrent neural networks comprising either additive sigmoid neurons in discrete time or biologically more plausible time-continuous leaky-integrate-and-fire cells. General conditions for the existence of synchronized activity in such networks are given, which guarantee that corresponding neurons in both coupled sub-networks evolve synchronously. It is, in particular, demonstrated that even the coupling of totally different network structures can result in complex dynamics constrained to a synchronization manifold M. For additive sigmoid neurons the synchronized dynamics can be periodic, quasiperiodic as well as chaotic, and its stability can be determined by Lyapunov exponent techniques. For leaky-integrate-and-fire cells synchronized orbits are typically periodic, often with an extremely long period duration. In addition to synchronized attractors there often co-exist asynchronous periodic, quasiperiodic and even chaotic attractors.

Received:
Nov 5, 1999
Published:
Nov 5, 1999

Related publications

inJournal
1999 Repository Open Access
Frank Pasemann and Thomas Wennekers

Complete synchronization in coupled neuromodules of different types

In: Theory in biosciences, 118 (1999), pp. 267-283