When traveling in the air plane some people get motion sickness and start to vomit. Although this is very rarely occurs as today’s pilots are well trained to handle take offs and landings in soft smooth moves. Latest communication and early warning system offer to avoid routes with turbulent air. Motion Sickness mostly occurs when the air plane gets in to turbulent air.
If the airplane is entering in to turbulent air, passengers will be advised to wear their seat belts and will ask to be seated to avoid injuries to them and to others.
In human body brain controls the motion. The brain gets signals from the inner ear, eyes, and the tissues of the body and controls the sense of balance and the equilibrium. When one of them don't agree with the have motion or don't have motion signal people tend to vomit.
To avoid this before the traveling don't eat sweet foods like biscuits, cake or drink sugar added coffee, tea, or soft drinks. Don't drink too much water. But eat good amount of food. This will give you good energy through the trip. Also when start moving try to look through the window and look far away objects and tell to your self that the vehicle you are traveling is moving. These steps may help you to prevent vomiting. These can be helpful if you are traveling by car or ship.
What is motion sickness?
Motion sickness is a very common disturbance of the inner ear that is caused by repeated motion such as from the swell of the sea, the movement of a car, the motion of a plane in turbulent air, etc. In the inner ear (which is also called the labyrinth), motion sickness affects the sense of balance and equilibrium and, hence, the sense of spatial orientation.
What causes motion sickness?
Motion is sensed by the brain through three different pathways of the nervous system that send signals coming from the inner ear (sensing motion, acceleration, and gravity), the eyes (vision), and the deeper tissues of the body surface (proprioceptors). When the body is moved intentionally, for example, when we walk, the input from all three pathways is coordinated by our brain. When there is unintentional movement of the body, as occurs during motion when driving in a car, the brain is not coordinating the input, and there is thought to be discoordination or conflict among the input from the three pathways. It is hypothesized that the conflict among the inputs is responsible for motion sickness.
For example, when we are sitting watching a picture that depicts a moving scene, our vision pathway is telling our brain that there is movement, but our inner ear is telling our brains that there is no movement. Thus, there is conflict in the brain, and some people will develop motion sickness in such a situation (even though there is no motion).
The cause of motion sickness is complex, however, and the role of conflicting input is only a hypothesis, or a proposed explanation, for its
development. Without the motion–sensing organs of the inner ear, motion sickness does not occur, suggesting that the inner ear is critical for the development of motion sickness. Visual input seems to be of lesser importance, since blind people can develop motion sickness. Motion sickness is more likely to occur with complex types of movement, especially movement that is slow or involves two different directions (for example, vertical and horizontal) at the same time.
The conflicting input within the brain appears to involve levels of the neurotransmitters (substances that mediate transmission of signals within the brain and nervous system) histamine, acetylcholine, and norepinephrine. Many of the drugs that are used to treat motion sickness act by influencing or normalizing the levels of these compounds within the brain.