TED Talk: Your Brain on Improv
"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."
Click https://www.ted.com/talks/charles_limb_your_brain_on_improv#t-19362 link to open resource.