I have twice woken up in the morning with my eyes shifting back and forth horizontially very very rapidly and my head feels like it is whipping around and around. I cannot stand or move around as I am extremely dizzy and nauseous. I cannot control my eyeballs and try to lie still holding them to make them stop. If I move too fast or soon after they stop it starts again. I have compared both times this has happened to see if there was something common to cause it, i.e., eye strain, illness, computer usage, etc., and nothing was the same. This is very frightening and as I am otherwise a very healthy person with no medical issues very puzzling to me. The actual spasams last 1 to 2 minutes, the residual effects a few hours. Any ideas about this? The two happened about 2 months apart.