In those cranial nerves that are coming off the brain stem, the information is kind of flowing from the bottom. The eighth cranial nerve is your vestibular nucleus. Then the information comes up to the sixth, the fourth and the third, all of which involve coordinating your eye muscles. The vestibular system tells us where our head is going so that the information then moves up the brain stem so that we can coordinate head and eye movements and keep our fixation stable, even though our head is moving. I think that is a huge part of what is happening here, that you're ending up with interruptions in that pathway.
On April 29th, 2019. See this statement in context.