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Multiprotocol-induced plasticity in artificial synapses

Title
Multiprotocol-induced plasticity in artificial synapses
Author
정두석
Keywords
TIMING-DEPENDENT PLASTICITY; LONG-TERM POTENTIATION; POPULATION CODES; SYNAPTIC PLASTICITY; NEUROMORPHIC SYSTEMS; NEURON; MEMORY; MEMRISTOR; MODEL; IMPLEMENTATION
Issue Date
2014-12
Publisher
Royal SOC Chemistry
Citation
Nanoscale, 2014, 6(24), P.15151-15160
Abstract
We suggest a 'universal' electrical circuit for the realization of an artificial synapse that exhibits long-term plasticity induced by different protocols. The long-term plasticity of the artificial synapse is basically attributed to the nonvolatile resistance change of the bipolar resistive switch in the circuit. The synaptic behaviour realized by the circuit is termed 'universal' inasmuch as (i) the shape of the action potential is not required to vary so as to implement different plasticity-induction behaviours, activity-dependent plasticity (ADP) and spike-timing-dependent plasticity (STDP), (ii) the behaviours satisfy several essential features of a biological chemical synapse including firing-rate and spike-timing encoding and unidirectional synaptic transmission, and (iii) both excitatory and inhibitory synapses can be realized using the same circuit but different diode polarity in the circuit. The feasibility of the suggested circuit as an artificial synapse is demonstrated by conducting circuit calculations and the calculation results are introduced in comparison with biological chemical synapses.
URI
http://pubs.rsc.org/en/Content/ArticleLanding/2014/NR/C4NR03405H#!divAbstract
ISSN
2040-3364; 2040-3372
DOI
10.1039/c4nr03405h
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > MATERIALS SCIENCE AND ENGINEERING(신소재공학부) > Articles
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