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Dear Davide, I'm not sure it has to do with headshape, at least your F2 definitely is not related to headshape. I suggest that you first check that your individual MRI is approximately registered to the template (use CheckReg button and select your MRI and the single subject template image in SPM/canonical). If not you could use Display/image utility to reorient and translate your image. Then use 'Coregister Est & Res' button in SPM FMRI to coregister your individual image to the template and reslice it and then use the output of that as the individual image. Best, Vladimir On Thu, Mar 1, 2012 at 1:24 PM, Rivolta, Davide <[log in to unmask]> wrote: > > > Dear all, > > > > I am having some troubles with MEG 3D source reconstruction. > > > > For some of my subjects I have a good “alignment” when I use the headshape > (F1). However, when I add the structural MRI, it gets weird (F2) and the > forward solution is in F3. > > > > I am not sure why this happens only for some, but not all, the subjects. > > Maybe someone can help. > > > > Thank you in advance, > > > > Best wishes, > > Davide > > > > > >