>When your interoceptive signal fails to cohere with your overall computed sense of motion, you get the bad kind of "lurching sensation" — which, if it happens

>When your interoceptive signal fails to cohere with your overall computed sense of motion, you get the bad kind of "lurching sensation" — which, if it happens enough times, causes a unique kind of acute "body load" nausea purely localized within the gut Something like this would happen to me sometimes when I was intoxicated on alcohol and cannabis together (getting crunk, the kids used to say). After achieving a substantial buzz, if I closed my eyes and leaned back deeply in a chair or lay down on my back, I could get this vivid sensation of falling rapidly. Just like going down a steep rollercoaster. As long as I stayed in the sweet spot intoxication-wise, it was a thrilling and pleasurable sensation. From what I recall, after a few brief moments of exhilaration (that I could maybe relax and focus into in order to prolong), a subconscious awareness that I'm not actually moving takes over, which turns the sensation into pure nausea. Right in the pit of my stomach, like you describe. Sometimes if the nausea passed quickly enough I could open my eyes and sit up, re-center myself, and then induce the effect again. Anyway, kind of relevant in a weird way. The things we do for cheap thrills... And on that note, I could see potential for some people to get acclimated to this effect of the technology and actually enjoy it as part of the experience.