Musician and researcher Charles Limb wondered how the brain works during musical improvisation -- so he put jazz musicians and rappers in an fMRI to find out. What he and his team found has deep implications for our understanding of creativity of all kinds.
Not only does he mention Jarret as an example in his presentation he does the actual experiment with Mike Pope! Mike has played bass for David Sandborn, Chick Corea's Elecktric Band and Al Dimeola, amongst others. He also designed the pre-amps that are used in Fodera basses. AND he is a killer piano player. A triple threat!
I am sure every jazz blog is going to be posting this sooner or later. There is some cool things here that seem to reenforce the "music is a language concept" that many folks talk about.