The orientation of the head model

Discussions
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1

Dear Brainstorm Community,

I understand that the leadfield gives the sensor value when there is a unit current dipole on cortex surface.
I would like to know the constrained orientation of the unit current dipole.
Is the positive side of the dipole outside or inside cortex surface?

Thank you very much.

2

Cortical dipoles point outwards from the cortical surface by default. Hence a positive current points outward and negative points inward.