That's awesome. Here's the [mind-blowing study](https://academic.oup.com/brain/article/132/10/2747/330765) that sent me down the rabbit hole. It blows my mind that stutterers and SLP's don't know anything about it. It took me about three nights of reading to wrap my head around most of it, but totally worth it. Tips: Grey matter does computation, white matter connects different parts of the brain. - "Fractional anistropy" (FA) is the amount of data going through white matter. Think of it like how much water is flowing through a pipe.