# Quantification of a spike-based winner-take-all VLSI network

Oster, M; Yingxue, W; Douglas, R; Liu, S-C (2008). Quantification of a spike-based winner-take-all VLSI network. IEEE Transactions on Circuits and Systems - Part I: Regular Papers, 55(10):3160-3169.

## Abstract

We describe a formalism for quantifying the performance of spike-based winner-take-all (WTA) VLSI chips. The WTA function non-linearly amplifies the output responses of pixels/neurons dependent on the input magnitudes in a
decision or selection task. In this work, we show a theoretical description of this winner-take-all computation which takes into consideration the input statistics, neuron response variance, and output rates. This analysis is tested on a spiking VLSI neuronal network fabricated in a 4-metal, 2-poly 0.35\,$\mu$m CMOS process. The measured results of the winner-take-all performance from this chip correspond to the theoretical prediction. This formalism can be applied to any implementation of spike-based neurons.

## Abstract

We describe a formalism for quantifying the performance of spike-based winner-take-all (WTA) VLSI chips. The WTA function non-linearly amplifies the output responses of pixels/neurons dependent on the input magnitudes in a
decision or selection task. In this work, we show a theoretical description of this winner-take-all computation which takes into consideration the input statistics, neuron response variance, and output rates. This analysis is tested on a spiking VLSI neuronal network fabricated in a 4-metal, 2-poly 0.35\,$\mu$m CMOS process. The measured results of the winner-take-all performance from this chip correspond to the theoretical prediction. This formalism can be applied to any implementation of spike-based neurons.

## Citations

24 citations in Web of Science®
22 citations in Scopus®

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Item Type: Journal Article, refereed, original work 07 Faculty of Science > Institute of Neuroinformatics 570 Life sciences; biology WTA|integrate-and-fire neurons, analog, VLSI, event-based English 2008 10 Mar 2009 16:06 05 Apr 2016 13:10 IEEE 1057-7122 © 2008 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE. https://doi.org/10.1109/TCSI.2008.923430 ini:19808