Hi, I am new to MNE and I am approaching MEG data pre-processing. I have a question regarding the tSSS. Should I include in the function cross-talk and calibration files? I noticed that with them or without, the power spectra doesn’t change so much, but I wanted to know what is the recommended practice.
Yes, please do make use of these files if you have them available. I have never worked without them, so cannot say just how much of an effect their presence or absence really has. The effect will change from MEG system to system (and recording site). But good practice would be to always use them.