Vertigo is a sensation of spatial disorientation when the surroundings appear to whirl and there is a sense of loss of balance. It often happens to people on tall buildings or ladders but the victim is stationary and the world appears to spin around them.

Coriolis effect occurs when the balance mechanism in the ears, the vestibular apparatus, is subjected to two sources of motion such as moving your head while the aircraft is in a turn, and the resultant sensed movement doesn't agree with visual cues.