There is a whole pile of research out there into deaf people and motion sickness. The most interesting being that hearing loss due to certain kinds of nerve dam

There is a whole pile of research out there into deaf people and motion sickness. The most interesting being that hearing loss due to certain kinds of nerve damage can result in basically becoming immune to motion sickness. I’m struggling to find the exact citation I want to share (I read it several years ago now) at the moment, but I read about it while I was researching into the early days of space flight, if I recall it came off of the early research as a result of following up what was the cause of one test subject being utterly immune to any attempt to make him motion sick. The end result being not very useful for the practical aspects of spaceflight, but ending up with the discovery that a group of people with a specific type of auditory nerve damage are basically 100% immune to motion sickness is certainly an interesting result in terms of understanding the cause of motion sickness.