Itchy, Bouncy hedgeog?

Hi guys. Mika has been really itchy lately, I think she's still doing the baby quilling, since she's losing a lot of quills but is growing bigger ones in. I've noticed for a while sometimes I hear her making a "bup bup bup bup" noise, so I set up a light and a camera to try and figure out what she's doing.

Do hedgehogs ever have seizures?! I don't think that's what it is, because she stops every time I've tried to catch her bumping around. Anyway, here's a link to the video. The bumping is closer to the end of the video. Maybe she has hiccups? Not sure what it is, but if anyone could lend a hand I'd like to know!