> Maybe they gave me Valium.

Versed/midazolam, almost certainly, was a part of the preoperative regimen.

I had jaw surgery and basically didn't sleep the night before, for obvious reasons, and they gave me a bit of versed in prep and had to wake me up on the table to put me under for anesthesia proper. Hey, not my fault the blankets were warm and the pillow was perfect.

It's a very useful medication both for anxiety, but also to reduce your seizure risk, which I imagine for cerebellar surgery was a definite factor.