Numbers in leadfield matrix

[Francois]

The values you can find in the Gain matrix of the headmodel file are not in the same units as the measured scalp EEG values. This is explained here:

EEG units

HI, I am curious about the units used for forward head modeling. Are they supposed to be microvolts on the scalp surface? I tried three different cortical source models as follows: dipoles min forw soln max forw soln from 2,503 -1,912 2,016 Freesurfer (lh & rh.pial) 10,003 -2,041 2,016 FreeSurfer (" ") 64,000 -0.0028 0.0026 Human Connectome Projec…