[Mne_analysis] EEG average reference off

[Ellen Lau]

Hi,

Our group would like to display EEG sensor ERP data with several SSPs applied to remove artifacts but without applying the average reference (it is more conventional in our field to display ERP sensor data with the mastoid reference used for online recording). 

Has anyone figured out how to do this with mne_process_raw? When we use the --projoff flag it turns off the average reference and the SSPs that we want to include, but when we use the --projon flag it turns on the SSPs and the average reference together. We couldn't figure out a way to selectively turn off the average reference SSP. 

thanks,
Ellen