 |
 |
Dear Panagiotis, If this is the case you can use CTF software to swap the fiducial locations back. If you look in the ctf bin directory you'll find a number of functions to look at headpos. I'm pretty sure the one you want is something like calcheadpos. It even has a swap option. (you can also use this function to simply read head pos to compare with other subjects). Best wishes Gareth -----Original Message----- From: SPM (Statistical Parametric Mapping) [mailto:[log in to unmask]] On Behalf Of Panagiotis Tsiatsis Sent: 06 April 2010 18:19 To: [log in to unmask] Subject: [SPM] (Ex)Changing the coordinates of the fiducial coils in CTF-MEG data Dear all, Stupidity is just endless as they say, and it seems that I frequently am its victim. So it seems that during one MEG recording session, I placed the left and the right ear localization coils in the opposite way because I can see that all my data are flipped. Is there any practical way to correct that in spm8 or should I just throw this subject's data away? Can I also practically check somehow that it is really the case that the coils were flipped? The MEG system is a CTF one. Thank you a lot in advance, Panagiotis