How can you extract templates of artifacts for different activities from an EEG signal using MATLAB?

Sheikh Farhana Binte Ahmed @Sheikh-Farhana-Ahmed

09 February 2023 1 8K Report

I intend to superimpose the artifact templates on the clean EEG and then verify the performance of the algorithm by comparing with the clean EEG (i.e. ground truth data). I found MATLAB a suitable software.

Hsin-Yuan Chen

Hi,

Load EEG data: load('yourfile.mat')

Preprocess data: Use MATLAB's designfilt to create a bandpass filter and apply it to your raw data.

Extract artifacts: Identify regions exceeding a threshold, considering those as artifacts.

Superimpose artifacts on clean EEG: Add artifact templates back onto the original data.

Verify algorithm performance: Compare noisy EEG signal with clean one using Mean Squared Error (MSE).

This is a basic outline; more complex tasks may necessitate advanced methods and specialised toolboxes like EEGLAB or FieldTrip.

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