Oh no! Sleepwalking is such a wild and oddly fascinating thing to me. I used to sleepwalk (and talk-- as in have full fledged conversations with people) when I was a child, but as far as I know that's mostly subsided for me as well. Then again, I live alone and have not slept in the same place as someone consistently for a long time, so I'm not certain I would know. I also used to wake up by sitting straight up in bed and looking around, which terrified my older siblings. Apparently I might still do this sometimes...

Good luck with the sleep study! I was so nervous going into mine because I desperately wanted an answer to what was wrong with me, but it turned out to really not be so bad. It was mostly just really boring and having all the leads attached to me was somewhat awkward and uncomfortable.

I hope everything turns out well for you :)