[FieldTrip] co registration of the mesh points to the atlas

[qi li]

Hi Jörn,

Thanks a lot! This link is very helpful for my question.

Actually, I followed the tutorial of source reconstruction of
event-related fields using MNE which clearly states 'recon-all
-surfreg -subjid Subject01' this already co-registered the original
surface to the standard atlas sphere. So for each individual, their
cortical surfaces are aligned at this step. The confusion is when
down-sampling by using 'mne_setup_source_space --ico -6', what is
exactly done(algorithm) to down-sample from 20,000 nodes to only 8196?
This might be crucial for a group analysis so I seek a clarification.

Thanks!

Qi



On Tue, Oct 30, 2012 at 5:03 AM, "Jörn M. Horschig"
<jm.horschig at donders.ru.nl> wrote:
> Dear Qi,
>
> I guess this page might help:
> http://fieldtrip.fcdonders.nl/example/create_single-subject_grids_in_individual_head_space_that_are_all_aligned_in_mni_space?s[]=warp
>
> Best,
> Jörn
>
>
> On 10/25/2012 6:00 PM, qi li wrote:
>>
>> Hi,
>>
>> Is there any function to co-register the individual cortical mesh
>> points(8196 in total) generate by fieldtrip to the standard brain.
>> Thanks!
>>
>> Qi
>> _______________________________________________
>> fieldtrip mailing list
>> fieldtrip at donders.ru.nl
>> http://mailman.science.ru.nl/mailman/listinfo/fieldtrip
>
>
>
> --
> Jörn M. Horschig
> PhD Student
> Donders Institute for Brain, Cognition and Behaviour
> Centre for Cognitive Neuroimaging
> Radboud University Nijmegen
> Neuronal Oscillations Group
> FieldTrip Development Team
>
> P.O. Box 9101
> NL-6500 HB Nijmegen
> The Netherlands
>
> Contact:
> E-Mail: jm.horschig at donders.ru.nl
> Tel:    +31-(0)24-36-68493
> Web: http://www.ru.nl/donders
>
> Visiting address:
> Trigon, room 2.30
> Kapittelweg 29
> NL-6525 EN Nijmegen
> The Netherlands
>
> _______________________________________________
> fieldtrip mailing list
> fieldtrip at donders.ru.nl
> http://mailman.science.ru.nl/mailman/listinfo/fieldtrip