基于小波变换与随机森林算法的针刺手法脑电分类研究  

EEG classification for acupuncture manipulation based on wavelet transform and random forest algorithm

作　　者：张可 姚勇 徐刚[1] 杨华元[1] ZHANG Ke;YAO Yong;XU Gang;YANG Huayuan(Shanghai University of Traditional Chinese Medicine,Shanghai 201203,China)

机构地区：[1]上海中医药大学,上海201203

出　　处：《生物医学工程研究》2025年第1期1-7,共7页Journal Of Biomedical Engineering Research

基　　金：上海市科技创新行动计划启明星计划扬帆专项项目(22YF1449100);上海中医药大学预算内项目(2021LK103)。

摘　　要：为探究不同针刺手法对脑电(EEG)信号的特异性,本研究基于小波变换和随机森林算法对针刺曲池穴后的EEG信号进行了分类研究。首先,对18名健康志愿者分别进行3种针刺曲池穴手法(补法、泻法、平补平泻法)干预,记录针刺过程中100 s的头皮EEG信号,并以2 s为单位进行分段;其次,利用小波变换提取δ、θ、α、β、γ波的平均能量和小波熵构建特征集;最后,通过最大相关最小冗余算法进行特征排序,结合随机森林算法完成分类,并采用10折交叉验证法评估分类性能。结果表明,基于随机森林算法的分类模型对补法、泻法和平补平泻法EEG信号的分类准确率可达0.950。本研究可实现针刺曲池穴3种手法的EEG信号分类,表明针刺手法对大脑功能的调控具有显著差异性,可为针刺疗效的量化评价提供新的方法和思路。To investigate the specificity of different acupuncture manipulations on electroencephalogram(EEG)signals,the EEG signals after acupuncture manipulations at Quchi(LI11)were classified based on wavelet transform and random forest algorithm.Firstly,18 healthy volunteers were performed three kinds of acupuncture intervention at LI11(reinforcing,reducing,and even reinforcing-reducing methods).The scalp EEG signals of 100 s during acupuncture were recorded and segmented by 2 s.Secondly,the mean energy and wavelet entropy of δ,θ,α,β and γ waves were extracted by wavelet transform to construct the feature set.Finally,the features were sorted by maximal-relevance-minimal-redundancy algorithm,combined with the random forest algorithm,and the model performance assessed via 10-fold cross-validation.The results showed that the classification accuracy of the model based on random forest algorithm could reach 0.950 for the EEG signals of three kinds of acupuncture manipulations.The research enables the classification of EEG signals induced by three acupuncture manipulations at LI11,indicating the significant differences of acupuncture manipulations in the regulation of brain function,and can provide a new method and approach for the quantitative evaluation of acupuncture efficacy.

关 键 词：针刺手法 脑电 小波变换 随机森林 曲池穴 

分 类 号：R318[医药卫生—生物医学工程] TN911.7[医药卫生—基础医学]