Hi,
I' m new to BCI. I'm in the dark for weeks If any one can shine some light on this please HELP .
I'm looking for a doc with sloreta or any Inverse solution algorithm (calculus details, matrix coefficients calculus, ...etc).
I read many good papers about sloreta.
The papers shows me high level steps (...a matrix has a quadratic form...etc)
I guess, Details are too trivial for experts. Not for me, I can't find the missing steps.
I need to calculate matrix coefficient by hands before using a library doing it for me ? How to feed my matrix and obtain voxel's current...?
Thank you for your time
sLoreta or any Inverse solution algorithm
Re: sLoreta or any Inverse solution algorithm
Dear Brasig,
thank you for your interest in OpenViBE and welcome on this forum. Indeed, you must have a model telling how the currents go through the brain to the surface. Someone with more valuable knowledge in inverse models will give you a more detailed answer soon. Please stay tuned.
Yann
thank you for your interest in OpenViBE and welcome on this forum. Indeed, you must have a model telling how the currents go through the brain to the surface. Someone with more valuable knowledge in inverse models will give you a more detailed answer soon. Please stay tuned.
Yann
Re: sLoreta or any Inverse solution algorithm
Hello Brasig,
details on sLORETA transfer matrix computation can be found in article
Congedo Marco. Subspace Projection Filters for Real-Time Brain Electromagnetic Imaging
IEEE Transactions on Biomedical Engineering, 53(8), 1624-34, 2006
You can download the paper at
http://sites.google.com/site/marcocongedo
The only difficulty is to have a leadfield matrix to start with.
Cheers,
Marco CONGEDO,
Research Scientist,
Centre Nationale de la Recherche Scientifique (cnrs) and Grenoble University.
details on sLORETA transfer matrix computation can be found in article
Congedo Marco. Subspace Projection Filters for Real-Time Brain Electromagnetic Imaging
IEEE Transactions on Biomedical Engineering, 53(8), 1624-34, 2006
You can download the paper at
http://sites.google.com/site/marcocongedo
The only difficulty is to have a leadfield matrix to start with.
Cheers,
Marco CONGEDO,
Research Scientist,
Centre Nationale de la Recherche Scientifique (cnrs) and Grenoble University.
Re: sLoreta or any Inverse solution algorithm
mcongedo wrote:Hello Brasig,
details on sLORETA transfer matrix computation can be found in article
Congedo Marco. Subspace Projection Filters for Real-Time Brain Electromagnetic Imaging
IEEE Transactions on Biomedical Engineering, 53(8), 1624-34, 2006
You can download the paper at
http://sites.google.com/site/marcocongedo
The only difficulty is to have a leadfield matrix to start with.
Cheers,
Marco CONGEDO,
Research Scientist,
Centre Nationale de la Recherche Scientifique (cnrs) and Grenoble University.
Re: sLoreta or any Inverse solution algorithm
Dear Brasig,
what was this ?
Did Marco's answer solve your problem ?
Regards,
Yann
what was this ?
Did Marco's answer solve your problem ?
Regards,
Yann