One of my best friends has an inner ear problem. It's vestibular. She can be walking down the street and suddenly lose her balance.
She took the electrical "watch" with her. The day we boarded, she couldn't even look at the water without being sick. She turned it so it pulsed about once a second.
By day five she was hanging over the balcony looking at the flying fish.
It seemed to have residual effects. She didn't have any problems for months and months after she got home. She swears by it now.
