Here are the basic steps I used to process BioSemi EEG data.
1 load raw data
![](https://jianchen.info/images/eegsteps/809C496A-8039-4D2E-9B13-70B6B7721A10.png)
2 channel location
![](https://jianchen.info/images/eegsteps/030CC12C-9735-43A2-AD38-53EBF6240A46.png)
3 re-reference
![](https://jianchen.info/images/eegsteps/3135436B-A01A-4FED-9B9E-E426C7FA3CB4.png)
4 filtering (sometimes the data is very huge and therefore the filtering will be very slow, so we can do the filtering later)
5 Create EEG event list (ERPLAB from now on)
![](https://jianchen.info/images/eegsteps/F18A0B75-3355-4EBE-B7CA-E62720858371.png)
6 Assign bins (how to operate on bins? see here)
![](https://jianchen.info/images/eegsteps/43ABAD39-3E41-4BA7-9607-34EA61FE7D74.png)
![](https://jianchen.info/images/eegsteps/8A8EC18C-86E4-4AB8-8242-1E6D23716321.png)
![](https://jianchen.info/images/eegsteps/4AC21F49-0134-4FE3-83E1-12B663C404DF.png)
7 extract bin-based epoch
![](https://jianchen.info/images/eegsteps/B1B02461-7F46-4AB1-8371-AF769E9F3E26.png)
8 artifact rejection
![](https://jianchen.info/images/eegsteps/40120CE4-073E-4CEF-A35D-98DDB2DDD429.png)
![](https://jianchen.info/images/eegsteps/9234B231-7612-41D2-9349-5682C3027FD8.png)
-> choose channel around the eye. -> update and then reject
9 compute average erps
![](https://jianchen.info/images/eegsteps/289AC38D-87CF-4234-9B90-D5C01D010D9A.png)
10 filter if you don’t do it in step 4
![](https://jianchen.info/images/eegsteps/CD5AD34D-B8EC-4825-B5A8-90EA5C31611D.png)
11 bin operations if necessary
![](https://jianchen.info/images/eegsteps/1E8272A4-A250-4471-945D-2D764439AE61.png)
![](https://jianchen.info/images/eegsteps/3FA48AA1-9212-4A49-A8B4-73CEFFB13B38.png)
12 Plot ERPs
![](https://jianchen.info/images/eegsteps/AB81310E-9BC5-422B-95FD-B3718883494D.png)
![](https://jianchen.info/images/eegsteps/F1F2CFBD-3018-4E77-B960-35EEFB103226.png)
13 Save figures if you want
![](https://jianchen.info/images/eegsteps/14A0D60A-40B2-4697-9F30-84312AFCEEBF.png)
Remember, these are basic steps to illustrate how to process the EEG data using EEGLAB and ERPLAB toolbox, you’re suggested not to strictly follow these steps.