CAJ | 학술논문

为实现脑电信号处理与分析的一体化，提取有效的脑电信号特征指标，提高脑电图阅读速度，构建出了一套虚拟的脑电图（electroencephalogram，EEG）分析仪。首先使用了虚拟仪器开发软件LabVIEW实现了虚拟的EEG动态采集。再使用其开放的生物医学工具包对信号进行傅里叶滤波，同时联合MATLAB脚本节点，对信号进行小波消噪。然后使用频域分析等方法，在计算EEG信号的功率谱基础上，进一步分析提取的δ、θ、α、β四种脑电节律的成分。结果表明小波消噪较傅里叶滤波能更好地保留EEG信息，MATLAB节点的使用能增强分析仪的扩展性。研究中对癫痫发作间期与发作期进行了节律提取，初步结果显示发作间期与发作期在四种节律上的改变具有差异性。
위실현뇌전신호처리여분석적일체화，제취유효적뇌전신호특정지표，제고뇌전도열독속도，구건출료일투허의적뇌전도（electroencephalogram，EEG）분석의。수선사용료허의의기개발연건LabVIEW실현료허의적EEG동태채집。재사용기개방적생물의학공구포대신호진행부리협려파，동시연합MATLAB각본절점，대신호진행소파소조。연후사용빈역분석등방법，재계산EEG신호적공솔보기출상，진일보분석제취적δ、θ、α、β사충뇌전절률적성분。결과표명소파소조교부리협려파능경호지보류EEG신식，MATLAB절점적사용능증강분석의적확전성。연구중대전간발작간기여발작기진행료절률제취，초보결과현시발작간기여발작기재사충절률상적개변구유차이성。
In order to achieve the integration of EEG signal processing and analysis,as well as extracting effective characteristic EEG indicators for improving the EEG reading speed,a virtual electroencephalogram (EEG,)signal analyzer was designed by Lab-VIEW.The platform could simulate the routine EEG display interfaces.First ,the open biomedical Toolkit and MATLAB script were a-dopted for filtering.Next,the EEG power spectrum was calculated based on the frequency domain analysis,and further extraction of four EEG components(δ,θ,α,β)were analyzed.The results showed that wavelet de-noising had better retention of EEG informa-tion than Fourier filtering did,in addition,the use of MATLAB node could enhance scalability.The differences of four rhythms be-tween interictal and ictal seizures were studied and the change degree varied significantly with different rhythms.