Thanks Raymundo, your suggestion helped me solve the problem. I re-imported the anatomy folder, but now the head mask has a bump in the area of the eyes. Is this caused by the way I imported the data?
Also, since I had already done the MEG data analysis in the functional view do you suggest to do it again? I tried to check the MRI registration, but when I try to refine it, I am told that there were not enough digitized points to perform the refinement.
Thanks for your help.