First i was listening to the joe rogan podcast that came out yesterday. The guest said he used it for chronic depression. That got me thinking about how it could be used for speech. So i looked up a few things like this http://www.stutteringhelp.org/interaction-both-sides-brain-adults-who-stutter Then i went down a rabbit hole of youtube videos of doctors using it to interrupt speaking patterns of people who do not stutter. And brain mapping videos of how when people who stutter use singing/acting to not stutter. Ill find those later when im not at work and post them if you want.