Does the brain of an improv comedian or freestyle rapper function in a particular way? Is it processing language faster than a regular, lower-improvising brain?  Or is something else also going on, something to do with how we judge ourselves?  We asked our pal Ari Daniel to look into this. He found a group of researchers and a group of professional improvisers working together on some of these questions.  Photo of Dutch-based comedy improv group Easy Laughs by Robin Straaijer. Music in this episode by Fleslit, Magnus Ringblom and Trabant 33. Read a transcript here. Sign up for Subtitle’s newsy, nerdy, fortnightly(ish) newsletter here.