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Analog VLSI Circuits for Short-Term Dynamic Synapses

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.

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Correspondence to Shih-Chii Liu.

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Liu, SC. Analog VLSI Circuits for Short-Term Dynamic Synapses. EURASIP J. Adv. Signal Process. 2003, 596576 (2003). https://doi.org/10.1155/S1110865703302094

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  • DOI: https://doi.org/10.1155/S1110865703302094

Keywords

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