[FieldTrip] coregistration neuromag

Vladimir Litvak litvak.vladimir at gmail.com
Fri Feb 24 11:24:26 CET 2012

Dear Chrysa,

If you are using SPM already you could also generate a head model and
do coregistration with SPM8 and then use it with Fieldtrip. See SPM
manual for details. There are some example functions in the
Beamforming toolbox in SPM where you can see how the SPM-Fieldtrip
interfacing can be done.



On Fri, Feb 24, 2012 at 10:08 AM, Chrysa Lithari
<chrysa.lithari at gmail.com> wrote:
> Hi to all,
> I just started using fieldtrip and I have the following question.
> I have the MRI and the polhemus data for each subject.
> The MRI is in dicom and I can also transform it to 'analyze' format using
> SPM.
> The polhemus data are in fif format, together with the functional data.
> How can I coregister these two types of data in fieldtrip?
> I searched in the tutorial and it is mentioned that normally MEG systems
> come with a software allowing to align MRI with the helmet, e.g. CTF.
> However, I have worked on Neuromag system and I have not done anything like
> this. How can I do it in Fieltrip?
> A step by step (AC-PC points, normalization, segmentation etc) guidance
> would be very helpful stating the functions I have to use and any
> precautions I have to consider during this process.
> Best regards and thanks in advance,
> Chrysa Lithari
> --
> Chrysa Lithari
> - PhD candidate in Lab of Medical Informatics, Aristotle University of
> Thessaloniki, Greece
> - M.Sc. NeuroInformatics, Unversity of Patras, Greece
> - B.Sc. Computer Science, Aristotle University of Thessaloniki, Greece
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