There is some research starting to be done on this, e.g. this study on what goes on in improv jazz musicians' brains when they are playing: http://www.plosone.o

There is some research starting to be done on this, e.g. this study on what goes on in improv jazz musicians' brains when they are playing: http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0001679 http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjourna...