— Begin quote from “JamieH”
It actually isn’t that odd if you break it down logically.
The first thing you have to understand is that this isn’t necessarily motion sickness. You’re talking about a disorder (MDDS or MAV that generates MDDS-like symptoms) that makes you feel like you are in motion when you are not. So when you ARE in motion, you don’t notice the disorder. Or you don’t notice it as much. The disorder isn’t preventing you from feeling REAL motion. So when you are actually in motion, the real sensations of motion are much stronger than the illusion of motion the disorder is generating and so you don’t notice the disorder.
it is the same thing with tinnitus in a shower. Just because the shower drowns out the tinnitus and makes it so that you can’t hear it doesn’t mean the tinnitus has gone away. You just can’t hear it over the louder noise of the shower.
Of course you’ve said you feel the best when you lie down, and that is when the illusion of motion from MDDS-type symptoms should theoretically be the most noticable, so I’m not sure how that fits in.
— End quote
Thanks for your well thought out and structured response Jamie…
The laying down but is the exception to the rule, as you mention… The only thing I can think of…
When standing, walking… The surface area of contact with the ground is very small, only the size of your feet. Which means your balance system has to work much harder to make sure you do not fall, therefore you experience the unbalanced feeling most at this stage.
When sitting, the feeling is not so bad, you have the area of your feet touching the ground, your legs and back supported by the chair…
When laying down, there is maximum surface area meaning the body does not have to work hard at all to keep balance.
When in motion, your theory comes into play…
The above would also make sense, when I have the support of a trolley in the supermarket, compared to walking without.
I am just thinking out loud here