一种基于STDP机制的IF模型简化算法  

A Simplified Algorithm of IF Model Based on STDP Mechanism

作　　者：刘贤锋[1] 左亚旻 

机构地区：[1]常州机电职业技术学院

出　　处：《微型电脑应用》2015年第8期59-61,6,共3页Microcomputer Applications

基　　金：江西省高校"‘青蓝工程’资助"项目

摘　　要：触弹性是指神经细胞之间连接强度的变化,突触前细胞和突触后细胞产生峰电位的时间差可以改变突触弹性,这个现象被称为"尖峰时间依赖性可塑性",简称STDP。将STDP机制融合到传统的IF模型当中,改良后的模型可以更真实的拟合生物神经细胞的自然特性。本文以这种结合STDP机制的IF模型为基础,提出一个新的算法,并通过MATLAB进行仿真实验,实验结果表明该算法能够体现神经细胞的生理特性,具有更好的仿生功能。Synaptic elasticity means the intensity changes of cell junction between two neurons.The lag of spike potential caused by presynaptic and postsynaptic neurons can change the synaptic elasticity,which is called 'spike time dependent plasticity'(STDP).It is proposed that the traditional IF model with STDP can simulate the natural properties of biological neuron much better.This paper proposes a new algorithm based on the IF model with STDP,and simulates in the MATLAB.Experimental result has indicated that algorithm can reflect the performance of nerve cell and it has a better bionic function.

关 键 词：神经网络 IF模型 STDP机制 

分 类 号：TP311[自动化与计算机技术—计算机软件与理论]