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

[Luke Bloy]

Hi Qi,

I'm not sure if this is what you are looking for but take a look at the
--morph option to mne_setup_source_space. It should let you create
corresponding source grids in each of your subjects.

-Luke

-----Original Message-----
From: fieldtrip-bounces at science.ru.nl
[mailto:fieldtrip-bounces at science.ru.nl] On Behalf Of qi li
Sent: Wednesday, October 31, 2012 5:39 PM
To: FieldTrip discussion list
Subject: Re: [FieldTrip] co registration of the mesh points to the atlas

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_i
> ndividual_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:
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> NL-6525 EN Nijmegen
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>
> _______________________________________________
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