Hi, is there a recommended method for dealing with bipolar VEOG and HEOG channels to remove eye blinks? Should I average the channels first before using ica.find_bads_eog after mne.preprocessing.create_eog_epochs or are these methods ‘clever’ enough to operate on the 4 channels by default?
I have 4 EOG channels, 2 VEOG and 2 HEOG the peaks are opposing bipolar so would seem to cancel each other out if a difference is taken. My colleague uses EEGLAB and has taken the difference first before using ICA for blink detection. Is this necessary for MNE?
Below is a butterfly plot of the typical data, 32 EEG channels, 4 EOG channels. This specific subject identified 3 blink components with ICA at a threshold of 2.0.
Thanks in advance.