Departmental Papers (BE)

Document Type

Conference Paper

Date of this Version

May 2006

Abstract

We present a silicon neuron that uses shunting inhibition (conductance-based) with a synaptic rise-time to achieve synchrony. Synaptic rise-time promotes synchrony by delaying the effect of inhibition, providing an opportune period for neurons to spike together. And shunting inhibition, through its voltage dependence, inhibits neurons that are late more strongly (delaying the spike further), thereby pushing them into phase (in the next cycle). We characterize the soma (cell body) and synapse circuits, fabricated in 0.25 µm CMOS. Further, we show that synchronized neurons (population of 256) spike with a period that is proportional to the synaptic rise-time.

Comments

Copyright 2006 IEEE. Reprinted from Proceedings of the 2006 IEEE International Symposium on Circuits and Systems (ISCAS 2006), May 2006, 4 pages.
Publisher URL: 10.1109/ISCAS.2006.1693706

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Date Posted: 29 August 2007

This document has been peer reviewed.