Units of Beta Amplitude in Source Space Estimated with the sLoreta algorithm

Good day!

I need to do frequency analysis of MEG data (beta range). To go to the source space, I used the sLORETA algorithm. I can’t figure out in what units the signal is obtained in the source space:( Apparently, these are not nanoAmperes, but then what units of measurement are obtained? ((Maybe someone knows the answer to this question? For any information, I will be very grateful.