eeglab中文教程系列(15)-绘制独立成分ERP贡献
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：
1.加载数据文件:eeglab教程系列(1)-加载、显示数据
2.加载电极位置文件:eeglab教程系列(2)-绘制脑电头皮图
3.提取数据epoch:eeglab教程系列(5)-提取数据epoch
4.使用ICA分解数据:eeglab中文教程系列(11)-使用ICA分解数据
独立成分的ERP 对数据的ERP 的贡献
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 microvolt
Scaling components to RMS microvolt
Data epoch is from -1000 ms to 1992 ms.
Plotting data from -1000 ms to 1992 ms.
Comparing maximum projections for components:
IC1 maximum mean power of back-projection: 38.509
IC2 maximum mean power of back-projection: 0.819246
IC3 maximum mean power of back-projection: 22.6933
IC4 maximum mean power of back-projection: 6.78334
IC5 maximum mean power of back-projection: 21.5198
IC6 maximum mean power of back-projection: 5.54757
IC7 maximum mean power of back-projection: 22.5431
IC8 maximum mean power of back-projection: 3.83181
IC9 maximum mean power of back-projection: 4.76929
IC10 maximum mean power of back-projection: 2.38919
IC11 maximum mean power of back-projection: 4.37118
IC12 maximum mean power of back-projection: 3.1094
IC13 maximum mean power of back-projection: 3.61488
IC14 maximum mean power of back-projection: 10.5461
IC15 maximum mean power of back-projection: 2.24509
IC16 maximum mean power of back-projection: 1.07009
IC17 maximum mean power of back-projection: 4.95616
IC18 maximum mean power of back-projection: 2.12227
IC19 maximum mean power of back-projection: 2.65247
IC20 maximum mean power of back-projection: 1.49523
IC21 maximum mean power of back-projection: 1.63033
IC22 maximum mean power of back-projection: 0.388555
IC23 maximum mean power of back-projection: 1.9825
IC24 maximum mean power of back-projection: 0.869334
IC25 maximum mean power of back-projection: 0.653917
IC26 maximum mean power of back-projection: 0.586803
IC27 maximum mean power of back-projection: 0.639125
IC28 maximum mean power of back-projection: 1.29816
IC29 maximum mean power of back-projection: 0.762766
IC30 maximum mean power of back-projection: 0.408131
IC31 maximum mean power of back-projection: 0.268396
IC32 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]
绘制Component ERP-image
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：
本文章由脑机学习者Rose笔记分享,QQ交流群：903290195
更多分享，请关注公众号
