saving additional variables when importing long format data
I am trying to use mousetrap together with EEG data. Psychopy (which I use to collect mouse data) and EEG equipment send two different types of time (EEG is more precise).
My mouse data is output in the "long" format. Columns are SUBJ_ID, X, Y, Time, MT_ID, STIM_ID and EEG_TIME.
How can I preserve EEG_Time when importing mousetrap data? I tried using add_labels argument, but I don't know how to access them later. Many thanks!