[Mne_analysis] source strength of fitted dipole in source space

[Tim Kunze]

Hi,

I am trying to model the influence of a (in mne_analyze) fitted dipole 
to an existing measurement. The aim is to subtract the influence of the 
dipole from the measurement in the sensor space.

The dipole fit delivers the location and the orientation of the 
dipole. The orientation per room direction is expressed in nA. I now 
calculate the forward solution by multiplying the dipole with the 
leadfield to get the influence in the sensor space which is then 
subtracted from the actual measurement.

My question concerns the source strength of the dipole: is it 
necessary to normalize the source strength of the dipole (sqrt(Qx^2 = 
Qy^2 + Qz^2)= Q = 1) or do I just use the strength per room direction 
from the fit to define the activity of the dipole per direction?


Thanks a lot for your opinion,

Tim