Okay, I found it, THE site. There was a study by Standard in Oxford a while back where Humphrey Ocean was scanned while drawing. It shows that there is more brain activity in the frontal regions of the brain in artists. Control showed activity in the visual areas (trying to copy what was seen) compared with higher brain function in Mr. Ocean.
Check this one out. It's not a maze! I've also downloaded the whole study in pdf format, if anyone is interested. I'm not sure how to link to it yet. In the meantime, this one is reeeeealy interesting.
go to:
http://www.physiol.ox.ac.uk/~rcm/pem/pem1.html
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