eeglab教程系列(15)绘制独立成分ERP贡献

要完成该操作&＃xff0c;必须保证已加载数据和电极位置数据&＃xff0c;同时还要对数据进行提取epoch&＃xff0c;并对数据进行ICA处理&＃xff0c;操作如下&＃xff1a;

1. 加载数据文件:eeglab教程系列(2)-加载、显示数据

2. 加载位置文件:eeglab教程系列(3)-绘制脑电头皮图

3. 提取数据epoch:eeglab教程系列(6)-提取数据epoch

4. 使用ICA分解数据:eeglab教程系列(12)-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&＃xff0c;具体操作如下&＃xff1a;

Plot > Component ERPs > with component maps

操作后弹出如下对话框&＃xff1a;

点击OK就可以弹出如下界面&＃xff1a;

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&＃xff0c;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&＃xff1a;

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 &＃39;ppaf&＃39; 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&＃xff1a;Plot > Component ERP image

完成该操作后&＃xff0c;会弹出如下界面&＃xff1a;

在上述界面填写相应数据&＃xff0c;具体操作和解释可以查看教程9&＃xff1a;eeglab教程系列(9)-绘制ERP图像

点击OK后&＃xff0c;弹出如下窗口&＃xff1a;

不用于商业行为&＃xff0c;转载请联系后台

若有侵权&＃xff0c;请后台留言&＃xff0c;管理员即时删侵&＃xff01;

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