Hi all,
I am using the mne.preprocessing.find_bad_channels_maxwell() function to automatically detect bad channels in considerably long (~2 h) MEG datasets.
The default duration=5.0 and min_count=5 parameters seem too stringent for such a long recording, so I would like to know whether there are some guidelines (just rule of thumb is fine too 
) on which amount/proportion of the signal in a channels should be detected as bad for it to be considered bad.
Thanks a lot!