Monostable multivibrators as novel artificial neurons

Research output: Contribution to journalArticle

Abstract

Retriggerable and non-retriggerable monostable multivibrators are simple timers with a single characteristic, their period. Motivated by the fact that monostable multivibrators are implementable in large quantities as counters in digital programmable hardware, we set out to investigate their applicability as building blocks of artificial neural networks. Wederive the nonlinear input-output firing rate relations for single multivibrator neurons as well as the equilibrium firing rate of large recurrent networks. We show that in rate-encoded monostable multivibrators networks the synaptic weights are tunable as the period ratio of connected units, and thus reconfigurable at run time in a counter-based digital implementation. This is illustrated with the task of handwritten digit recognition. Furthermore, we show in a taskindependent manner that networks of monostable multivibrators are capable of nonlinear separation, when operating directly on pulse streams. Our research implies that pulse-coupled neural networks with excitable neurons showing a delayed response can perform computations even when working solely with suprathreshold pulses.
Original languageEnglish
Pages (from-to)224-239
Number of pages16
JournalNeural Networks
Volume108
DOIs
Publication statusPublished - Dec 2018

Keywords

  • ANN
  • Network dynamics
  • Neuron model
  • PCNN
  • Pulse coupled

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