Anyone who has had vestibular disturbances will tell you it's a living hell. I think the mechanism is pretty good, but I also suspect it's not far removed from asking the ethics committee to let them attatch nipple clamps with low voltage shocks: It will elucidate a signal, but my goodness...

(I am sure they will settle down, and its for a greater good, but this is one of those 'this may hurt a little' moments)