Hi, I know what you are talking about! I don't get the slanting floor visuals, but I do get the feeling of listing to the left. It's really strange, and unexplainable. (at least in my case.)

They also did inner ear testing for me, etc. with normal results. I was told I had an "interesting story" (about how i got the concussion) but that all systems were normal. Ha ha!

They did prescribe me some antivert meds, which work, but they make me so lethargic that I only use them in the most extreme of times.

I hope you find some answers!