eeglab中如何繪制獨立成分ERP貢獻
這篇文章主要介紹eeglab中如何繪制獨立成分ERP貢獻，文中介紹的非常詳細，具有一定的參考價值，感興趣的小伙伴們一定要看完！
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要完成該操作，必須保證已加載數(shù)據(jù)和電極位置數(shù)據(jù)，同時還要對數(shù)據(jù)進行提取epoch，并對數(shù)據(jù)進行ICA處理，操作如下：
加載數(shù)據(jù)文件
加載位置文件
提取數(shù)據(jù)epoch
使用ICA分解數(shù)據(jù)
想要得到獨立成分的ERP 對數(shù)據(jù)的ERP 的貢獻，具體操作如下：
Plot > Component ERPs > with component maps
操作后彈出如下對話框：
點擊OK就可以彈出如下界面：
上圖中黑色包絡(luò)線是各個時間點的所有channel 的最大值和最小值，彩線是各個獨立成分的的ERP。如果只想要了解對200-500ms 數(shù)據(jù)ERP 貢獻最大的獨立成分?？稍谌缦录t色框中編輯為200 500.
點擊OK即可。
同時在command line會返回如下運行結(jié)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]
繪制Component ERP-image
具體操作：Plot > Component ERP image
完成該操作后，會彈出如下界面：
在上述界面填寫相應(yīng)數(shù)據(jù)，具體操作和解釋可以查看教程9：eeglab教程系列(9)-繪制ERP圖像
點擊OK后，彈出如下窗口：
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