Is My Dog Seeing Ghosts, Sleep Walking, or Having a Seizure?

I made this video a couple weeks ago after Maybelle experienced another one of her weird late-night “episodes.” Today I brought the video to the vet with us, but we still aren’t sure what’s going on. I’m supposed to keep a log of these episodes, which are pretty infrequent (once every three months or so). My vet — who I love — had one other suggestion for me. If we determine that she’s not having small seizures — or can’t figure out what’s going on — that perhaps we should see an “animal communicator.” Apparently she’s got a couple she trusts and now I just kind of want to go anyway…

Anyway, has anyone ever seen something like this? It fits some of the “small seizure” criteria, but I’m still kind of hoping for ghosts.