[FieldTrip] mne source reconstruction

[jan-mathijs schoffelen]

Hi Qi,

To follow up on Jörn:

If you reconstructed the source activations on a mesh that represents the cortical surface, you first need to interpolate the functional data into a 3D volume, if you want to use ft_sourceplot for visualization. For this you need ft_sourceinterpolate.
As an alternative, to visualize the results, you can use ft_sourcemovie. However, this function is under development so it may not give the most visually appealing results.

Best,

JM


On Aug 2, 2012, at 8:52 AM, Jörn M. Horschig wrote:

> Dear Qi,
> 
> Not quite sure if I understand your request correctly, but you can just rehape:
>     source.avg.pow = reshape(source.avg.pow, anatomical.dim);
> Then instead of being a vector, it will become a matrix.
> 
> If that's not the answer you intended to get, please phrase your question differently :)
> 
> Best,
> Jörn
> 
> On 8/1/2012 7:33 PM, qi li wrote:
>> Hi,
>> 
>> Is there anyway to map the source space mesh back to voxel space so I
>> can use the ft_sourceplot.
>> 
>> After MNE source reconstruction, I have
>> 
>> source =
>> 
>>        time: [1x399 double]
>>         pos: [8196x3 double]
>>      inside: [1x8196 double]
>>     outside: [1x0 double]
>>      method: 'average'
>>         avg: [1x1 struct]
>>         cfg: [1x1 struct]
>> 
>> I have 8196 mesh points but how to map it back to the anatomical voxel
>> space? Thanks!
>> 
>> Qi
>> _______________________________________________
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>> 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
> 
> 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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Jan-Mathijs Schoffelen, MD PhD 

Donders Institute for Brain, Cognition and Behaviour, 
Centre for Cognitive Neuroimaging,
Radboud University Nijmegen, The Netherlands

Max Planck Institute for Psycholinguistics,
Nijmegen, The Netherlands

J.Schoffelen at donders.ru.nl
Telephone: +31-24-3614793

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