[FieldTrip] Unit of simulated EEG using openMEEG

Munsif Jatoi munsif.jatoi at gmail.com
Wed Apr 8 10:08:28 CEST 2015

Dear Hindriks,

The leadfield matrix has got orientation and moments of dipoles. When it is
multiplied by dipole numbers say 1 or 2 at certain location, it will be
generating the voltage matrix. Put it in a more simple way, V= KJ +e where,
V= potential (volts), K= leadfield and J= current density (A/m2). So the
generated data has units of microvolts or the units of voltage. I hope you
got the point.



On Wed, Apr 8, 2015 at 3:32 PM, HINDRIKS, RIKKERT <rikkert.hindriks at upf.edu>

> Dear all,
> Could anyone tell me what are the units of the entries in BEM leadfield
> matrices generated using openMEEG?
> For example, if I multiply the matrix with a vector of dipole moments in
> Am, do I get microVolts? (after taking the
> average reference)
> Thanks a lot,
> Rikkert
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Munsif Ali H.Jatoi,

Ph D Scholar,
Centre for Intelligent Signals and Imaging Research,
Universiti Teknologi PETRONAS,

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