[FieldTrip] constrain source solution space

[RICHARDS, JOHN]

https://static-content.springer.com/esm/art%3A10.1007%2Fs10548-016-0505-3/MediaObjects/10548_2016_505_MOESM3_ESM.docx

1--prepare a grid, for the source volume
2-prepare a head volume
3-prepare electrode (or meg) scalp locations

These three elements are used for a lead field. 

LF and other elements are used w EEG in ft_sourceanalysis. 

There are several tutorials on FT site to do this. 

John
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Today's Topics:

   1. Constrain Source solution space (Nakhnikian, Alexander)


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Message: 1
Date: Thu, 4 Aug 2016 18:25:38 +0000
From: "Nakhnikian, Alexander" <Alexander_Nakhnikian at hms.harvard.edu>
To: "fieldtrip at science.ru.nl" <fieldtrip at science.ru.nl>
Subject: [FieldTrip] Constrain Source solution space
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Hello All,


I'm trying to constrain my source space to gray matter and I found suggestions for how to do this on the FAQ: http://www.fieldtriptoolbox.org/faq/can_i_restrict_the_source_reconstruction_to_the_grey_matter

[http://www.fieldtriptoolbox.org/_media/logo-share.png]<http://www.fieldtriptoolbox.org/faq/can_i_restrict_the_source_reconstruction_to_the_grey_matter>

faq:can_i_restrict_the_source_reconstruction_to_the_grey ...<http://www.fieldtriptoolbox.org/faq/can_i_restrict_the_source_reconstruction_to_the_grey_matter>
www.fieldtriptoolbox.org
Yes, there are two strategies you can use. You can either make a regular 3D grid spanning the whole brain in which only grid locations in grey matter are considered ...




The problem is that I cannot figure out how to actually do this. For example, I don't see options in ft_sourceanalysis for inputing segmented mir with the tissue types of interest, now for giving the program an anatomic mask. Any feedback would be greatly appreciated.


Best,


Alexander
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