Simply EEGLAB
Automated pipelines: when to use them
Station 9 · Lesson 4 · EEGLAB 2026.1
In the GUI
- FileManage EEGLAB extensionsToolsRun PREP pipeline
eeglab - PlotChannel spectra and maps
- ToolsRun PREP pipelinePREP pipeline control panel
- ReferenceReference channelsEvaluation channelsRe-referenced channelsOk
[1 3:5 7:32]EOG1EOG2 - Line noiseLine frequencies removedOk
60 - Ok
.html.pdfD1 prep - PlotChannel spectra and maps
D1 prep - PlotChannel data (scroll)
Script
plugin_askinstall('PrepPipeline', 'prepPipeline', true);
EEG_raw = EEG;
eegChans = find(~ismember({EEG.chanlocs.labels}, {'EOG1', 'EOG2'}));
params = struct();
params.name = 'D1';
params.lineFrequencies = 60;
params.detrendChannels = 1:EEG.nbchan;
params.lineNoiseChannels = 1:EEG.nbchan;
params.referenceChannels = eegChans;
params.evaluationChannels = eegChans;
params.rereferencedChannels = eegChans;
[EEG, params] = prepPipeline(EEG, params);
EEG.setname = 'D1 prep';
nd = EEG.etc.noiseDetection;
if ~strcmp(nd.errors.status, 'good')
error('PREP stopped with status: %s', nd.errors.status);
end
fprintf('PREP version: %s\n', nd.version);
fprintf('Interpolated channels: %s\n', ...
strjoin({EEG.chanlocs(nd.interpolatedChannelNumbers).labels}, ', '));
fprintf('Still noisy after reference: %s\n', ...
strjoin({EEG.chanlocs(nd.stillNoisyChannelNumbers).labels}, ', '));
figure; pop_spectopo(EEG_raw, 1, [], 'EEG', 'freqrange', [1 64], 'freq', [10 60]);
figure; pop_spectopo(EEG, 1, [], 'EEG', 'freqrange', [1 64], 'freq', [10 60]);
EEG = pop_eegfiltnew(EEG, 'locutoff', 0.1);
EEG.filename = ''; EEG.filepath = ''; EEG.datfile = ''; EEG.saved = 'no';
[ALLEEG, EEG, CURRENTSET] = pop_newset(ALLEEG, EEG, 0, 'setname', 'D1 prep', 'gui', 'off');
eeglab redraw;Which value should I choose?
| Setting | Value in this lesson |
|---|---|
| Reference and evaluation channels | Scalp channels only |
| Line frequencies | 60 |
| Reference type | robust (the default) |
| Interpolation | post-reference (the default) |
| Keep filtered | No (the default) |
For your Methods
Line noise at 60 Hz was attenuated, and robust average referencing with bad channel detection and interpolation was performed, with the PREP pipeline (prepPipeline, PrepPipeline plugin [0.57.0], EEGLAB 2026.1), using the scalp channels as reference and evaluation channels; [n] channels were interpolated.