Lab 03

PSYC480

Dr Usman Afzali

University of Canterbury

3/8/23

Recap

Pipeline

EEGLab Preprocessing - Delorme

Referencing and Filtering

Removing unwanted channels

Use Edit -> Select data. Select the Channel range that you want to remove.

Examining raw data

• To identify artefacts
• And to reject them
• Use Tools -> Inspect/reject data by eye. Use your mouse to highlight the part you want to reject, and click the REJECT button.

Automatic artefact rejection

Use Tools -> Reject data using Clean Rawdata and ASR. Generally, we’d use all default choices - Consequently, the noise can often be reduced with minimal impact on the EEG/ERP waveform by filtering out the very low and/or very high frequencies.

• Delorme’s video and another video on these.

To submit

• Use the the Lab 1 exercise dataset on Learn.
• Conduct automatic rejection with ASR.
• Report your findings in comparison with before artefact rejection.

The END

References