It basically involves our brain fooling our mind. Our eyes see movement but our body knows that we are still.
So the messages sent to the brain are mixed. Obviously, the brain doesn't like this. He thinks you have have swallowed some hallucinogen or something. The brain orders your gut to vomit and throw out whatever bad stuff you might have eaten to make you give such mixed signals.
And that's why we feel nauseated in long distance traveling. For some people, unless they vomit they do not feel better. The more bumpy and convoluted the ride, more the nausea.
So the messages sent to the brain are mixed. Obviously, the brain doesn't like this. He thinks you have have swallowed some hallucinogen or something. The brain orders your gut to vomit and throw out whatever bad stuff you might have eaten to make you give such mixed signals.
And that's why we feel nauseated in long distance traveling. For some people, unless they vomit they do not feel better. The more bumpy and convoluted the ride, more the nausea.