I suspect my emotions might do the same thing.
I realized the other night that when my mind seems to be working nice and fast, and 'up', I end up looping the same thought in it over and over. Which is good in one sense because without doing that I do not think I will actually create that connection in my head and I find I often do it with putting ideas into words so I can then talk about them later on. But when I bother to take a step back and think about it, they are actually pretty out-of-control, like I'm going to loop those thoughts until I won't anymore and that's just how it's going to be.
Since my emotions are not well-balanced, they get rather strong, it's a possibility that has crossed my mind that they do the same sort of thing; they're gonna loop until they're gonna stop. But I currently lack the insight into my emotional life that would help me come to any real conclusion that that is what I even experience or not.
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Not autistic, I think
Prone to depression
Have celiac disease
Poor motivation