What causes car sickness

What causes car sickness?

http://wiki.answers.com/Q/What_causes_car_sickness

It all begins in the inner ear. In the inner ear, contains fluid. The fluid is also responsible for your balance. This tells your brain about the direction you’re moving in. Now for example, say that you are reading a book in a moving car. …

Can a migraine headache or car sickness cause slight pupil dilati…?

http://answers.yahoo.com/question/index?qid=20080519170129AAqxpTY

Research mydriasis and migraine. Mydriasis is the dilation of the pupil. You can also look up asymmetrical mydriasis as well. Mydriasis is a symptom of migraine in a lot of people. Symptoms of migraine can last a long time even if the pain …

What causes car sickness and how is sitting on a newspaper supose…?

http://www.physicsforums.com/showthread.php?t=757

Physiology doesn’t exactly fall under physics does it? Motion sickness is basically caused by conflicting inner ear and visual clues when the body is subjected to accelerations of movement in different directions or under conditions where …

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Car sickness, what causes it?

Q: So i am just curious, what causes car sickness, i always get a headache, well not always, but when i read in the car, i love to read though and i really want to be able to read in the car, is their any way to prevent getting car sick without taking a medication? also what place in the car prevents car sickness better the front or the back? why? also how come you can watch movies and play video games in the car without getting sick?! also i can read on a buss or shutle without getting car sick, how come? thanks any answers are apprechated!

A: Cause:The most common hypothesis for the cause of motion sickness is that it functions as a defense mechanism against neurotoxins. The area postrema in the brain is responsible for inducing vomiting when poisons are detected, and for resolving conflicts between vision and balance. When feeling motion but not seeing it (for example, in a ship with no windows), the inner ear transmits to the brain that it senses motion, but the eyes tell the brain that everything is still. As a result of the disconcordance, the brain will come to the conclusion that one of them is hallucinating and further conclude that the hallucination is due to poison ingestion. The brain responds by inducing vomiting, to clear the supposed toxin.Treatment:One common suggestion is to simply look out of the window of the moving vehicle and to gaze toward the horizon in the direction of travel. This helps to re-orient the inner sense of balance by providing a visual reaffirmation of motion.In the night, or in a ship without windows, it is helpful to simply close one’s eyes, or if possible, take a nap. This resolves the input conflict between the eyes and the inner ear. Napping also helps prevent psychogenic effects (i.e. the effect of sickness being magnified by thinking about it).Fresh, cool air can also relieve motion sickness slightly, although it is likely this is related to avoiding foul odors which can worsen nausea.Ginger root is a highly effective anti-emetic and sucking on crystallized ginger or sipping ginger tea can help to relieve the nausea. A teaspoon of ground (powdered) ginger root has been proven to be as effective in preventing motion sickness. I like to eat ginger candies. In my experience, sitting in the front is better. One reason, is that you can see outside and stare out the front window. It gives you a better perception of where you are and for your body to prepare for the motions of the car. In addition, the front of the car has a smaller radius at turns. The back end swings a larger distance. This is also true for adjustments along the road. I can not watch movies or play videogames without being sick. It may be because it is distracting. I find I don’t get sick if I am in conversation with someone. Concentrating on something engaging may help the motion sickness. I also get sick on busses and shuttles. However, I think it may be better becauses busses are larger and heavier. Therefore, their momentum does not allow them to waver on the street as much.

What causes car sickness?

Q:

A: Car sickness is a form of motion sickness, which some people experience riding in automobiles, airplanes, boats, trains, and amusement rides. Discordant signals sent from different parts of the body to the brain cause the nausea and feelings of discomfort that typically accompany motion sickness.Your brain gets information from several sources concerning the type and direction of your movements. The first, and most important, source is the inner ear. The inner ear, also responsible for balance, contains fluid that shifts according to your body’s movement, pushing little hairs one way or the other. This lets your brain know about the direction you’re moving in. Your brain also receives information from the eyes, skin pressure receptors that tell the brain what parts of the body are on the ground, and muscle and joint receptors that tell the brain which parts of the body are moving. The central nervous system (the brain and the spinal cord) compiles all of this information to create a complete picture of what is happening.If signals don’t make sense together, you may experience motion sickness. For example, say you are reading a book in a car. Your inner ear and skin receptors are telling your brain that you are moving. Your eyes see only the stationary book, and tell your brain that you are not moving. These bits of information don’t go together, and the result is the discomfort that you feel and call car sickness.Symptoms of motion sickness include unease and headaches in mild cases, to nausea, vomiting, excessive sweating and salivation, and dizziness, as well as feelings of anxiety and loss of color in the face in more severe cases.Anxiety about motion sickness before a trip can be a real factor in both bringing on an attack and its severity. Concentrate on preventative measures. Here are some tips: * If you are in a plane or boat, sit as close to the center as possible. * In a car, keep your eyes focused on the horizon; don’t focus on objects speeding by. It might also help to sit in the front seat. * Face forward rather than backwards in a car, boat, or train. * Do not sit with or talk with people who are experiencing motion sickness; it will probably increase your own anxiety. * Avoid reading while moving. * Eat only small meals and avoid greasy foods before and during travel. Don’t use alcohol and/or other drugs right before and during travel. * Some studies have shown ginger to aid in reducing the effects of motion sickness. Take ginger powder capsules or chew on fresh or candied ginger root. Another popular folk remedy is peppermint candy and/or tea. * You may also consider taking an antihistamine. Many can be bought over-the-counter. These often must be taken before traveling and can cause drowsiness. * Antiemetics are another drug option, including scopolamine patches. Some of these are also available over-the-counter.If your motion sickness is severe, or if the above techniques do not help, you can talk with your primary care provider about further options.

Can watching a movie in the car cause motion sickness?

Q: I am going on a trip tomorrow, 4 hours of driving and I would like to watch a movie on my Ipod. Is there any chance that might cause motion sickness?

A: most probably yes