I am struggling to find any researches where people abilities were tested from a neurophysiological perspective. For example, solving logical puzzles with scaling difficulty from easier to hardest, while being recorded on EEG. It may not be limited to puzzles. Any work would be good. Another example of something I am looking for is where a novice worker solved the problem, and then the same problem was solved by a professional. Maybe chess puzzles solved by different level chess players. I am not limited to EEG, MRI researches or any other brain behaviour recording technique will work for me.
I have heard, that there was a paper detailing the EEG of Einstein solving math equations. I couldn't find it. But practically I need any work in that direction.
I may be missing some keyword, or maybe I just don't know some keystone names. Anyway, I appreciate any sort of direction to where I can look for that sort of researches.
Thanks in advance.