UC/Irvine Brain Imaging Center did a nice study. Naive subjects were shot up with radioactive 2-deoxy-2-fluoro(F-18)-D-glucose and introduced to Tetris. The tagged sugar accumulates in brain areas with high metabolism. PET brain scan afterward showed their brains were lit up like Christmas trees. New folks at Tetris don't score well.
A month or two later, after intensive training and routine high scores, they were shot up again. They played the game as at first and then had their brains PET imaged. There were a couple of peeps of light, one in the vision area at the back of the brain, the other to one side. Everything else was dark
You don't need a lot of brain to solved a diffcult problem. You don't want a lot of brain working on it. What you want is just that part of your brain that can give you the answer.
Genius is efficient and parsimonious.
