So phantom pain is part of the proprioception system. That's interesting.
I wonder if my propensity to extreme motion sickness has anything to do with my proprioceptor system. I can get carsick at the drop of a hat, and it's awful. I don't have it when I drive, thank goodness, but I cannot ride in the back seat of a car, period, and I also cannot read or anything like that when I'm riding. Even thirty seconds of reading will start making me feel queasy.
I know motion sickness has something to with balance and horizon and so forth, but it would make sense that the proprioceptors might also play a role.