Magnetoencephalography (MEG) data cleared of artifacts caused by heart contractions and blinking (ICA method), as well as by muscle contractions; divided into epochs(response-locked); with root mean square (RMS) computed over ERFs values across all 204 gradiometers at each time point of the epoch.
Decoding the file name:
active{N1}_{N2}_moto_RMS.fif - where N1 can be "1" - (early stages of learning, ESL) or "2" (Advanced stages of learning, ASL); N2 - encrypted name of the subject