[FieldTrip] Creating volume conduction model and leadfieldmatrix using .elp (jan-mathijs schoffelen)

[jan-mathijs schoffelen]

Hi Brian,

In order to be able to create a leadfield matrix for forward and inverse modelling, you need to have position information of the electrodes. In the ideal case, these should be measured for each individual subject. If you don't have this information and used standard electrode caps, you can also try and use a set of template electrode positions.

Best wishes,

Jan-Mathijs


On Oct 10, 2011, at 11:45 AM, <B.Mouthaan at neuro.umcn.nl> <B.Mouthaan at neuro.umcn.nl> wrote:

> Hello Jan-Mathijs,
> 
> My elec file is a struct, containing a 32x3 double called 'label'. I think these contain the coordinates. Also it contains two 32x1 cells. Called 'textdata' and 'rowheaders'. They contain the same info (names of the 31 channels + average):
> 
> 'CP2'
> 'CP5'
> 'CP6'
> 'Cz'
> 'F3'
> 'F4'
> 'F7'
> 'F8'
> 'FC1'
> 'FC2'
> 'FC5'
> 'FC6'
> 'Fp1'
> 'Fp2'
> 'FT10'
> 'FT9'
> 'Fz'
> 'O1'
> 'O2'
> 'P3'
> 'P4'
> 'P7'
> 'P8'
> 'PO3'
> 'PO4'
> 'Pz'
> 'T7'
> 'T8'
> 'Avg'
> 
> I hope this is enough info for you, to help me with the solution
> 
> Best,
> 
> Brian
> 
> 
> 
> 
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> 
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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
J.Schoffelen at donders.ru.nl
Telephone: +31-24-3614793

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