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: 18 June 2003

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 dynamicsdepressionfacilitationsilicon synapsecortical models

Authors’ Affiliations

(1)
Institute of Neuroinformatics, University of Zurich and ETH Zurich

Copyright

© Copyright © 2003 Hindawi Publishing Corporation 2003