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Permanent URL to this publication: http://dx.doi.org/10.5167/uzh-17642

# 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.

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## 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®