Simply EEGLAB

Channel locations

Station 2 · Lesson 2 · EEGLAB 2026.1

In the GUI

Channel locations No (labels only)
EditChannel locations
Look up channel locations?
use MNI coordinate file for BEM dipfit model standard_1005.elc
Import file instead and erase all channels
OK 64 channel with the same label found and imported
OK

Script

[ALLEEG, EEG, CURRENTSET, ALLCOM] = eeglab;
dataFolder = 'C:\Users\me\Documents\eeg-course';   % change it
EEG = pop_loadset('filename', 'S001R03.set', 'filepath', dataFolder);
[ALLEEG, EEG, CURRENTSET] = eeg_store(ALLEEG, EEG, 0);
for iChan = 1:EEG.nbchan
    EEG.chanlocs(iChan).labels = strrep(EEG.chanlocs(iChan).labels, '.', '');
end
EEG = pop_chanedit(EEG, 'lookup', 'standard_1005.elc');
EEG = eeg_checkset(EEG);
figure; topoplot([], EEG.chanlocs, 'style', 'blank', ...
    'electrodes', 'labelpoint', 'chaninfo', EEG.chaninfo);
EEG = pop_saveset(EEG, 'savemode', 'resave');
[ALLEEG, EEG, CURRENTSET] = eeg_store(ALLEEG, EEG, CURRENTSET);
eeglab redraw

Which value should I choose?

Source	When to use it	How
Standard MNI template (`standard_1005.elc`)	Your cap uses standard 10-20 or 10-10 names, and you did not measure the positions. This is our case.	The default choice in Look up channel locations?
Your cap's own location file (from the manufacturer)	Your system's channel names are not standard, such as numbers `E1`, `E2`	Read locations in the channel editing window
Positions measured on the participant's head	You digitized the electrodes at the recording session	Read locations with the digitizer's file

Check

The Channel locations line in the main window shows Yes
The Command Window printed 64 channel with the same label found and imported
Plot > Channel locations > By name shows 64 electrodes: Cz in the center, Fpz at the front, Oz at the back
all(~cellfun(@isempty, {EEG.chanlocs.X})) gives 1: every channel has coordinates

For your Methods

Channel labels were cleaned of trailing periods and matched to the standard 10-5 template in MNI space (standard_1005.elc) with pop_chanedit (EEGLAB 2026.1).

In the GUI

Script

Which value should I choose?

Check

For your Methods

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