I have some old EEG with 21 channels and I need the electrode location info to plot 2D-maps. I've found files for 18, 24, 64, 128 (and so on) channels, but not 21 channels. Does anyone know where can I find it?
I realise your question is specialised regarding EEGLAB. I suggest you post your questions on the EEGLAB discussion list. The website: https://sccn.ucsd.edu/wiki/EEGLAB_mailing_lists. I suppose that there are more experts on the EEGLAB than here.