Giddiness occurs when we lose our sense of balance. The sensations perceived by the eye, inner ear, skin, muscles and joints help the body to know its stability. Several unusual situations, such as travelling in a bus or looking down from a great height, overstimulate and confuse that part of the brain which controls balancing. This condition is called Motion Sickness.
Researchers have discovered that motion sickness is caused by the temporary disturbance in what is known as the Vestibular Membranous Labyrinth. This is the part of intricate series in the structure of inner ear, and helps to maintain the body's equilibrium. If the Labyrinth becomes overloaded with information from the eyes and other senses, it can trigger a sudden desire to vomit.
The Motion sickness can sometimes be avoided by shifting the vision from objects at short range and those far off. This is the reason why car drivers are not usually affected, while backseat passengers often are. Those in the front seat have a panoramic, more stable and slower-moving scene. Passengers in the back seat see through the side windows, where the scenery flashes past and the brains labyrinth has more information to process.
