At Random Times, And In Any Body Position, I Get

At random times, and in any body position, I get sudden painless pulling sensations in waves from my head as if everything is pulling towards me magnetically in the room. The attacks last a second to about 5 minutes.

I've tried taking muscle relaxant medicines, a chiropractor, vertigo medicine, an MRI which showed nothing, yoga, massages, exercise, inner ear testing for vertigo which showed nothing, an eye list which showed nothing, many specialists ...

Why, what is it, and how to diagnose?