Deriving optimal silicon neuron circuit specifications using Data Assimilation

Elisa Donati, Kamal Abu Hassan, Alain Nogaret, Giacomo Indiveri

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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Abstract

Mixed signal neuromorphic circuits represent a promising technology for implementing compact and ultra-low power prosthetic devices that can be directly interfaced to living tissue. However, to accurately emulate the dynamical behavior of the biological tissue, it is necessary to determine the optimal set of specifications and bias parameters for these circuits. In this paper we show how this can be done for a silicon neuron design, by applying a statistical Data Assimilation method (DA). We present a conductance-based silicon neuron based on the Mahowald-Douglas (MD) design and use the DA method to
estimate its state variables and the ion channels parameters, so that it can accurately emulate the properties of biological neurons involved in the Central Pattern Generators (CPGs) responsible for producing the respiratory and heart-rate rhythms. While previous work has shown how DA well-estimates and predicts parameters from membrane voltage measurements using a semiempirical Hodgkin-Huxley neural model, here we show how the same method is suitable for simplified Very Large Scale Integration (VLSI) circuit designs and demonstrate how it allows us to reliably predict the response of the MD neuron to different input current profiles.
Original languageEnglish
Title of host publication2018 IEEE International Symposium on Circuits and Systems, ISCAS 2018 - Proceedings
PublisherIEEE
ISBN (Electronic)9781538648810
ISBN (Print)9781538648827
DOIs
Publication statusPublished - 4 May 2018
EventISCAS 2018 -
Duration: 1 Mar 2018 → …

Conference

ConferenceISCAS 2018
Period1/03/18 → …

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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    Donati, E., Abu Hassan, K., Nogaret, A., & Indiveri, G. (2018). Deriving optimal silicon neuron circuit specifications using Data Assimilation. In 2018 IEEE International Symposium on Circuits and Systems, ISCAS 2018 - Proceedings [8351338] IEEE. https://doi.org/10.1109/ISCAS.2018.8351338