Inverse solution

Discussions
1

Hello
How can extract a T in Brainstorm for this equation
ˆJ = TΦ
and how can access the variables in the brainstorm for the T in the inverse method like: mne, sLORETA,..

and another question how can use the eLORETA ? just in fieldtrip toolbox?

Thanks a lot,
Tahereh

2

Hi @ttaleei, if you are a new Brainstorm user, we recommend you start by following the introduction tutorials first (section "Get started" on the tutorial page), using the example dataset that is provided.
https://neuroimage.usc.edu/brainstorm/Tutorials

This is described in detail in the source estimation tutorial (part of the suggested series):
https://neuroimage.usc.edu/brainstorm/Tutorials/SourceEstimation

For the moment only sLORETA is implemented in Brainstorm. Check this discussion:
Loreta and Source localization - #5 by Sylvain

3

Thanks a lot
I read all the tutorial page. I want to match the equation in the paper for inverse solution with the brainstorm. I want to know the variable in the inverse solution. how can extract them? As I extract the lead field from brainstorm in the MATLAB workspace. please guide me

4

That matrix is called ImagingKernel in Brainstorm and is found here, when the result of source estimation is link:
https://neuroimage.usc.edu/brainstorm/Tutorials/SourceEstimation#On_the_hard_drive

If the result source estimation if a full sources file, the matrix multiplication is already applied in this step:
https://github.com/brainstorm-tools/brainstorm3/blob/3639e5915f865135dddd7ef093d908dd7d6cf6d8/toolbox/process/functions/process_inverse_2018.m#L713

The different Minimum-norm imaging methods in Brainstorm are implemented here:
https://github.com/brainstorm-tools/brainstorm3/blob/master/toolbox/inverse/bst_inverse_linear_2018.m

5

I am thankful for your help.