EEG Sensor space metrics

[richard (Richard Höchenberger)]

Hello and welcome to the forum!

Maybe this posting answers your question:

What is the unit for the source estimates returned by apply_inverse_epochs function for EEG data?

Hello @dahaiyu and welcome to the forum! The dSPM and sLORETA algorithms produce source estimates in unit-less values (based on F-statistics). On the other hand, the MNE and eLORETA algorithms return the electrical current in Amperes (that’s why the numbers are so tiny!). It is therefore totally alright to label the y-axis in your above figure as “dSPM value”. Hope that helps! Richard

Best wishes,
Richard