摘要
脉冲时序依赖可塑性规则和联想记忆规则共同描述了神经元突触的可塑性,对生物的学习和遗忘有重要的影响。现有的脉冲时序依赖可塑性规则与忆阻器结合的相关研究,仅实现了联想记忆的学习功能。基于此,融合脉冲时序依赖可塑性规则设计了一种新的忆阻联想记忆电路。首先,分析脉冲时序依赖可塑性规则和联想记忆规则之间的联系;接着,设计一种具备延时功能的模块,融合两种规则;进一步,结合模块设计了一种忆阻联想记忆电路,实现了学习和三种遗忘功能;最后,通过PSPICE仿真验证了学习和三种遗忘功能,以及所提出方案的有效性。
Spike-timing-dependent plasticity(STDP)rules and associative memory rules jointly describe the plasticity of neuronal synapses,which have essential effects on biological learning and forgetting.Existing studies on STDP rules combined with memristors only realize the learning function of associative memory.Building on this foundation,the paper incorporates STDP rules to develop a new memristor associative memory circuit.Initially,the connection between STDP rules and associative memory rules is analyzed.Subsequently,a module with a delay function is designed to integrate both two rules.This module is then used to create a memristor associative memory circuit,which achieves learning and three forgetting functions.The effectiveness of the proposed scheme,along with the learning and forgetting functions,is validated through PSPICE simulation.
作者
杨乐
徐晏阳
丁芝侠
李赛
YANG Le;XU Yanyang;DING Zhixia;LI Sai(School of Electrical and Information Engineering,Wuhan Institute of Technology,Wuhan 430205,Hubei,China)
出处
《武汉大学学报（理学版）》
CAS
CSCD
北大核心
2023年第6期819-826,共8页
Journal of Wuhan University:Natural Science Edition
基金
国家自然科学基金资助(62106181,62176189)
校科研计划项目(K202017,HBIRL202109)。
关键词
忆阻器
联想记忆电路
脉冲时序依赖可塑性规则
memristor
associative memory circuit
spike-timing-dependent plasticity rules
