Thank you very much for your answer.
I understand that the method I used is not valid. But is there a way to represent the source coming from the electrodes of the significant cluster at the sensor level ? My goal is to help the interpretation of my results by a source reconstruction without going through source level analyses where I lose power or where double dipping may be blamed on me.
You may have articles or tutorials that could help me in this way, or some suggestions of pipeline analyses ?
Thanks again for your help and your reactivity,
Théophile