Development of neural network structure with biological mechanisms

Samuel Johnson*, Joaquín Marro, Jorge F. Mejias, Joaquín J. Torres

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We present an evolving neural network model in which synapses appear and disappear stochastically according to bio-inspired probabilities. These are in general nonlinear functions of the local fields felt by neurons-akin to electrical stimulation-and of the global average field-representing total energy consumption. We find that initial degree distributions then evolve towards stationary states which can either be fairly homogeneous or highly heterogeneous, depending on parameters. The critical cases-which can result in scale-free distributions-are shown to correspond, under a mean-field approximation, to nonlinear drift-diffusion equations. We show how appropriate choices of parameters yield good quantitative agreement with published experimental data concerning synaptic densities during brain development (synaptic pruning).

Original languageEnglish
Title of host publicationBio-Inspired Systems
Subtitle of host publicationComputational and Ambient Intelligence - 10th International Work-Conference on Artificial Neural Networks, IWANN 2009, Proceedings
Pages228-235
Number of pages8
EditionPART 1
DOIs
Publication statusPublished - 2009
Event10th International Work-Conference on Artificial Neural Networks, IWANN 2009 - Salamanca, Spain
Duration: 10 Jun 200912 Jun 2009

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
NumberPART 1
Volume5517 LNCS
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349

Conference

Conference10th International Work-Conference on Artificial Neural Networks, IWANN 2009
Country/TerritorySpain
CitySalamanca
Period10/06/0912/06/09

Keywords

  • Brain development
  • Neural networks
  • Synaptic pruning

ASJC Scopus subject areas

  • Theoretical Computer Science
  • General Computer Science

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