eeglab中如何绘制独立成分ERP贡献


这篇文章主要介绍eeglab中如何绘制独立成分ERP贡献,文中介绍的非常详细,具有一定的参考价值,感兴趣的小伙伴们一定要看完!要完成该操作,必须保证已加载数据和电极位置数据,同时还要对数据进行提取epoch,并对数据进行ICA处理,操作如下:加载数据文件加载位置文件提取数据epoch使用ICA分解数据想要得到独立成分的ERP 对数据的ERP 的贡献,具体操作如下:Plot > Component ERPs > with component maps操作后弹出如下对话框:点击OK就可以弹出如下界面:
上图中黑色包络线是各个时间点的所有channel 的最大值和最小值,彩线是各个独立成分的的ERP。如果只想要了解对200-500ms 数据ERP 贡献最大的独立成分。可在如下红色框中编辑为200 500.点击OK即可。
同时在command line会返回如下运行结果:
Scaling components to RMS microvoltScaling components to RMS microvoltData epoch is from -1000 ms to 1992 ms.Plotting data from -1000 ms to 1992 ms.Comparing maximum proj 香港云主机ections for components:IC1 maximum mean power of back-projection: 38.509IC2 maximum mean power of back-projection: 0.819246IC3 maximum mean power of back-projection: 22.6933IC4 maximum mean power of back-projection: 6.78334IC5 maximum mean power of back-projection: 21.5198IC6 maximum mean power of back-projection: 5.54757IC7 maximum mean power of back-projection: 22.5431IC8 maximum mean power of back-projection: 3.83181IC9 maximum mean power of back-projection: 4.76929IC10 maximum mean power of back-projection: 2.38919IC11 maximum mean power of back-projection: 4.37118IC12 maximum mean power of back-projection: 3.1094IC13 maximum mean power of back-projection: 3.61488IC14 maximum mean power of back-projection: 10.5461IC15 maximum mean power of back-projection: 2.24509IC16 maximum mean power of back-projection: 1.07009IC17 maximum mean power of back-projection: 4.95616IC18 maximum mean power of back-projection: 2.12227IC19 maximum mean power of back-projection: 2.65247IC20 maximum mean power of back-projection: 1.49523IC21 maximum mean power of back-projection: 1.63033IC22 maximum mean power of back-projection: 0.388555IC23 maximum mean power of back-projection: 1.9825IC24 maximum mean power of back-projection: 0.869334IC25 maximum mean power of back-projection: 0.653917IC26 maximum mean power of back-projection: 0.586803IC27 maximum mean power of back-projection: 0.639125IC28 maximum mean power of back-projection: 1.29816IC29 maximum mean power of back-projection: 0.762766IC30 maximum mean power of back-projection: 0.408131IC31 maximum mean power of back-projection: 0.268396IC32 maximum mean power of back-projection: 0.172242 in the interval 203 ms to 500 ms.Plotting envelopes of 7 component projections.Topo maps will show components: 5 6 3 7 4 1 14 with max var at times (ms): 273 328 398 398 398 430 438 epoch frames: 318 325 334 334 334 338 339 Component sortvar in interval: 38.51 0.82 22.69 6.78 21.52 5.55 22.54 Summed component ‘ppaf’ in interval [203.125 500] ms: 79.42% Plot limits (sec, sec, uV, uV) [-1,1.99219,-16.3255,35.6778]具体操作:Plot > Component ERP image完成该操作后,会弹出如下界面:
在上述界面填写相应数据,具体操作和解释可以查看教程9:eeglab教程系列(9)-绘制ERP图像点击OK后,弹出如下窗口:
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