Overview

Teaching: 45 min
Exercises: 15 min

Questions

• What are the steps to implement Electric Source Imaging?

• How can I implement it with Fieldtrip?

Objectives

• To learn how to preprocess EEG evoked potentials

• To learn how to create the headmodel and sourcemodel from subject-specific MRI

• To learn how to estimate the forward and inverse model for ESI

• To learn how to reconstruct ROI-timecourses from source-timecourses

• Link to presentation
• Link to exercises

Key Points

• The functional signal (EEG) needs to be artefact-free for ESI to be accurate

• The source points are distributed in the grey matter, which needs to be coregistered with the MRI used to calculate the headmodel

• The solution of inverse problem is ill-posed so no solution is optimal

• Source timecourses need to be summarised in ROI-timecourses

---