Given four EOG electrodes (2 vertical and 2 horizontal), how can I blend
them in a single EOG that can be read by find_eog_events or
create_eog_epochs of MNE? Do I have to only have one EOG in my dataset?
I recommend creating a single bipolar referenced vertical EOG channel (mne.io.set_bipolar_reference) between the 2 vertical EOG channels and using that for find_eog_events. The find_eog_events is looking for blinks, which are best detected with the vertical EOG