[FieldTrip] importing Brainstorm head and source models and leftfields

[K Jeffrey Eriksen]

Hi Marco,

Sorry to say I was not successful, yet. I have shifted to other tasks at this point. I am using 256 channel EEG, and want to use the FreeSurfer cortical ribbon as my source model (I would prefer source/headmodels to be FEM as well). I found that a lot of FieldTrip is based on regular dipole grids, and also it is more oriented to MEG than EEG. I do  not have the time right now to try to put all the pieces together in FieldTrip to do what I want, but might get back to it in a month or two.

Sorry I could not be of more help to you right now.

-Jeff



From: Marco Buiatti [mailto:marco.buiatti at gmail.com]
Sent: Friday, November 04, 2016 3:08 AM
To: FieldTrip discussion list; K Jeffrey Eriksen
Subject: Re: [FieldTrip] importing Brainstorm head and source models and leftfields

Dear all,

I have Jeff's same question. I have anatomies ready in Brainstorm: segmented data imported, co-registration with MEG sensor space, computation of head model with overlapping spheres. Now I would like to import all this into Fieldtrip for source reconstruction of oscillatory sources (DICS).
What's the best way to do this?

And is there any difference between Brainstorm and Fieldtrip in these steps that I should be aware of?

Jeff, did you manage to solve the problem?

Thanks a lot,

Marco



On 16 August 2016 at 07:20, Schoffelen, J.M. (Jan Mathijs) <jan.schoffelen at donders.ru.nl<mailto:jan.schoffelen at donders.ru.nl>> wrote:
Hi Jeff,
Probably this is not yet implemented. Since it is all matlab-based it should be pretty straightforward, once you know how the headmodel is represented in the Brainstorm .mat file.
Once you have figured this out, it probably takes just a few lines of code in ft_read_headshape.

If you have an updated version of this function, you can easily contribute it to the code-base for everyone’s use through git.
How this can be done, is shown here: http://www.fieldtriptoolbox.org/development/git

Best,
Jan-Mathijs



On 16 Aug 2016, at 02:05, K Jeffrey Eriksen <eriksenj at ohsu.edu<mailto:eriksenj at ohsu.edu>> wrote:

Hi,

I am trying to do some forward and inverse simulations using a 3-shell BEM, and would prefer to import my model from Brainstorm where I have already created it. I can find one example of importing the cortical mesh from Brainstorm using ft_read_headshape with the ‘matlab’ format, but I cannot find anything on how to import the Brainstorm BEM head model or leadfield.

Please point me to any further information on this topic,
-Jeff


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--
Marco Buiatti

Neonatal Neurocognition Lab
Center for Mind/Brain Sciences
University of Trento,
Piazza della Manifattura 1, 38068 Rovereto (TN), Italy
E-mail: marco.buiatti at unitn.it<mailto:marco.buiatti at unitn.it>
Phone: +39 0464-808178
https://sites.google.com/a/unitn.it/marcobuiatti/

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