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Article: Spontaneous Threshold Lowering Neuron using Second‐Order Diffusive Memristor for Self‐Adaptive Spatial Attention

TitleSpontaneous Threshold Lowering Neuron using Second‐Order Diffusive Memristor for Self‐Adaptive Spatial Attention
Authors
Keywordsmultiobject detection
second-order memristor
self-adaptive spatial attention
spiking neural network
spontaneous threshold lowering
Issue Date24-May-2023
PublisherWiley-VCH
Citation
Advanced Science, 2023, v. 10, n. 22 How to Cite?
Abstract

Intrinsic plasticity of neurons, such as spontaneous threshold lowering (STL) to modulate neuronal excitability, is key to spatial attention of biological neural systems. In‐memory computing with emerging memristors is expected to solve the memory bottleneck of the von Neumann architecture commonly used in conventional digital computers and is deemed a promising solution to this bioinspired computing paradigm. Nonetheless, conventional memristors are incapable of implementing the STL plasticity of neurons due to their first‐order dynamics. Here, a second‐order memristor is experimentally demonstrated using yttria‐stabilized zirconia with Ag doping (YSZ:Ag) that exhibits STL functionality. The physical origin of the second‐order dynamics, i.e., the size evolution of Ag nanoclusters, is uncovered through transmission electron microscopy (TEM), which is leveraged to model the STL neuron. STL‐based spatial attention in a spiking convolutional neural network (SCNN) is demonstrated, improving the accuracy of a multiobject detection task from 70% (20%) to 90% (80%) for the object within (outside) the area receiving attention. This second‐order memristor with intrinsic STL dynamics paves the way for future machine intelligence, enabling high‐efficiency, compact footprint, and hardware‐encoded plasticity.


Persistent Identifierhttp://hdl.handle.net/10722/340869
ISSN
2023 Impact Factor: 14.3
2023 SCImago Journal Rankings: 3.914
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorJiang, Yang-
dc.contributor.authorWang, Dingchen-
dc.contributor.authorLin, Ning-
dc.contributor.authorShi, Shuhui-
dc.contributor.authorZhang, Yi-
dc.contributor.authorWang, Shaocong-
dc.contributor.authorChen, Xi-
dc.contributor.authorChen, Hegan-
dc.contributor.authorLin, Yinan-
dc.contributor.authorLoong, Kam Chi-
dc.contributor.authorChen, Jia-
dc.contributor.authorLi, Yida-
dc.contributor.authorFang, Renrui-
dc.contributor.authorShang, Dashan-
dc.contributor.authorWang, Qing-
dc.contributor.authorYu, Hongyu-
dc.contributor.authorWang, Zhongrui-
dc.date.accessioned2024-03-11T10:47:55Z-
dc.date.available2024-03-11T10:47:55Z-
dc.date.issued2023-05-24-
dc.identifier.citationAdvanced Science, 2023, v. 10, n. 22-
dc.identifier.issn2198-3844-
dc.identifier.urihttp://hdl.handle.net/10722/340869-
dc.description.abstract<p>Intrinsic plasticity of neurons, such as spontaneous threshold lowering (STL) to modulate neuronal excitability, is key to spatial attention of biological neural systems. In‐memory computing with emerging memristors is expected to solve the memory bottleneck of the von Neumann architecture commonly used in conventional digital computers and is deemed a promising solution to this bioinspired computing paradigm. Nonetheless, conventional memristors are incapable of implementing the STL plasticity of neurons due to their first‐order dynamics. Here, a second‐order memristor is experimentally demonstrated using yttria‐stabilized zirconia with Ag doping (YSZ:Ag) that exhibits STL functionality. The physical origin of the second‐order dynamics, i.e., the size evolution of Ag nanoclusters, is uncovered through transmission electron microscopy (TEM), which is leveraged to model the STL neuron. STL‐based spatial attention in a spiking convolutional neural network (SCNN) is demonstrated, improving the accuracy of a multiobject detection task from 70% (20%) to 90% (80%) for the object within (outside) the area receiving attention. This second‐order memristor with intrinsic STL dynamics paves the way for future machine intelligence, enabling high‐efficiency, compact footprint, and hardware‐encoded plasticity.<br></p>-
dc.languageeng-
dc.publisherWiley-VCH-
dc.relation.ispartofAdvanced Science-
dc.rightsThis work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.-
dc.subjectmultiobject detection-
dc.subjectsecond-order memristor-
dc.subjectself-adaptive spatial attention-
dc.subjectspiking neural network-
dc.subjectspontaneous threshold lowering-
dc.titleSpontaneous Threshold Lowering Neuron using Second‐Order Diffusive Memristor for Self‐Adaptive Spatial Attention-
dc.typeArticle-
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1002/advs.202301323-
dc.identifier.scopuseid_2-s2.0-85159926569-
dc.identifier.volume10-
dc.identifier.issue22-
dc.identifier.eissn2198-3844-
dc.identifier.isiWOS:000993875000001-
dc.identifier.issnl2198-3844-

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