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  • Research Article
  • Open Access

Analog VLSI Circuits for Short-Term Dynamic Synapses

EURASIP Journal on Advances in Signal Processing20032003:596576

https://doi.org/10.1155/S1110865703302094

  • Received: 14 May 2002
  • Published:

Abstract

Short-term dynamical synapses increase the computational power of neuronal networks. These synapses act as additional filters to the inputs of a neuron before the subsequent integration of these signals at its cell body. In this work, we describe a model of depressing and facilitating synapses derived from a hardware circuit implementation. This model is equivalent to theoretical models of short-term synaptic dynamics in network simulations. These circuits have been added to a network of leaky integrate-and-fire neurons. A cortical model of direction-selectivity that uses short-term dynamic synapses has been implemented with this network.

Keywords

  • short-term synaptic dynamics
  • depression
  • facilitation
  • silicon synapse
  • cortical models

Authors’ Affiliations

(1)
Institute of Neuroinformatics, University of Zurich and ETH Zurich, Winterthurerstrasse 190, Zurich, CH-8057, Switzerland

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