Train sickness it is unknown, because train travel on more straight direction and seldom steering up the hill and down a hill.Not true... my mother gets sick on trains if she's facing away from the direction of travel. If she's facing forward and can see out of the window it's fine.
RosyQuoteGBSB:Not true... my mother gets sick on trains if she's facing away from the direction of travel. If she's facing forward and can see out of the window it's fine.
Train sickness it is unknown, because train travel on more straight direction and seldom steering up the hill and down a hill.
Do deaf people get seasick?
If so then I think we can kiss goodbye to any idea that it's produced by infrasound (at least unless you can find another organ to sense the infrasound).
This page
http://www.royaldeaf.org.uk/page.php?id=100303
sugests that deaf peopel do suffer from seasickness.
I don't get seasick (or airsick or whatever) but I do get uncomfortable when there are high levels of low frequency sound- the ventilation system where I work sometimes has this effect.
Carsickness is caused by the motor which produces a special and rumbling low-frequency noise.Motion sickness occurs without an engine.
Train, metro, truck, motorcycle and tractor which produce no such noise will cause no carsickness.No so. I know people who suffer motion sickness on all of these.
The symptoms caused respectively by gyrating and carsickness are quite different. Gyrating movements will cause dizziness, while carsickness usually causes nausea or sleepiness. This is why authors of many scholar articles only state that gyrating symptoms are associated to carsickness, but the reasons behind carsickness are still unknown. Only unreliable knowledge popularizing articles say that the reason of carsickness is gyrating movements. This is not true. Actually, gyrating movements are not related to carsickness, which is actually caused by a special low-frequency noise. Only this kind of noise can cause exactly the same symptoms of carsickness. For example, even without staying on the airplane, the noise of airplane engine can also cause symptoms of carsickness. Experts of carsickness around the world all know that only noise can cause exactly the same symptoms of carsickness, but they fraud people by saying that this phenomenon is only a psychological reaction!Carsickness is caused by the motor which produces a special and rumbling low-frequency noise.Motion sickness occurs without an engine.
Standard laboratory test to induce motion sickness is a standard office chair, subject blindfolded, chair rotated, subject told to put head back to side etc. Very rarely does this fail to bring on motion sickness. No motor.Train, metro, truck, motorcycle and tractor which produce no such noise will cause no carsickness.No so. I know people who suffer motion sickness on all of these.
If you have a theory of vibration induced sickness you need to clasify it as a separate theory from motion sickness.
The stuff in my sickbags depends on what the victim had for breakfast, not whether the aircraft has an engine.It was firstly proposed by a Chinese physicist of acoustics that motion sickness was caused by infrasound. After reflecting on this over and over again for years, I think this view is wrong. In my opinion, motion sickness is supposed to result from booming low-frequency noise. For instance, it is beyond doubt that extremely loud booming low-frequency noise is always heard inside vehicles which easily bring about motion sickness. Inside vehicles without such noise, motion sickness isn’t caused at all. In spite of loud noise of tractors, people don’t feel sick inside them because there is no booming low-frequency noise. The key reason consists in that the noise of tractors doesn’t distract people because they don’t impact their verbal communications due to differences between frequency of the noise and people’s voices.
Part of the problem with instrument flying, yacht navigation or rear-seat car sickness is the inability of the semicircular canals to distinguish between linear acceleration and circular motion. You can induce carsickness by stop-start driving on a straight road, and airsickness on scheduled flights or glider "dolphining" is caused by sudden changes of pitch attitude, not turning.
If it's all due to infrasound, why don't pilots and drivers suffer the same symptoms as their passengers? It isn't a matter of aptitude or experience - hardened drivers often throw up when navigating in rallies, and the most experienced pilots still need to swap duties with each other to avoid becoming incapacitated under competition conditions.
The one time I had an entirely incapacitated crew was on a fairly large yacht, reaching into an opposing tide. For about two hours, we made no progress over the ground but just pitched and rolled at random intervals in almost total silence, broken only by groans and the sound of eight experienced sailors donating their stomach contents to the sea. The only relief was to do something: taking the helm in turn, or tweaking the sheets, though the latter was completely unncessary as we had the boat pretty well trimmed anyway, but the feeling of being a bit in control or able to anticipate the next roll was very calming.
Early on in my sailing days I noticed an uncharacteristic craving for ginger biscuits. I later discovered that Chinese sailors have always used ginger as a prophylactic against seasickness, and it seems to work as well as modern molecules without inducing drowsiness. Any explanation would be welcome!
Early on in my sailing days I noticed an uncharacteristic craving for ginger biscuits. I later discovered that Chinese sailors have always used ginger as a prophylactic against seasickness, and it seems to work as well as modern molecules without inducing drowsiness. Any explanation would be welcome!Lots of sailors swear by ginger and interestingly NHS site recommends it for morning sickness. I've never found any firm evidence, some studies say it works others not. It's often discussed on sailing forums but seems to depend on the individual whether it works. It's a long time since I trawled the research, might have another look, if I come across anything interesting I'll let you know.
Some other evidences can prove that motion sickness just arises from the aforementioned noise: People with good hearing easily suffer from motion sickness, while the deaf and dumb who can’t hear don’t feel sick inside vehicles at all.
Wow!The evidence show that people who gets sick in a car usually can travel in trains or motorcycles without any discomfort at all.
You came back after all this time, and ignored the evidence.
The evidence show that people who gets sick in a car usually can travel in trains or motorcycles without any discomfort at all.
Why?
The evidence show that people who gets sick in a car usually can travel in trains or motorcycles without any discomfort at all.In addition to the post above which I agree with.
(part of seasickness is caused by low-frequency noise from storm at sea, which is unavoidable natural disaster)
I can tell how I think it it works in my case. I have sea sickness that occurs after about half an hour, and also if i am onboard a helicopter for more than 3-4 hours.Your question has already been thought about a lot, if seasickness is caused by shaking, then why until now there is no exercise specialist says that the cause of motion sickness have been found in the world is shaking? But why do the real recognized reasons of motion sickness not be found? I always take the boat with a big quake, but I never have the feeling of seasickness and never see the people around me have the slightest seasick symptom.The old crew on the sea almost all the year round has said that the more shaking the boat is, the less possibility to get seasick. Thus it can be seen that seasickness has nothing to do with shaking and sports. Ancient Chinese and ancient Greece had a view that the boat sailing on the sea would cause nausea when it met sandstorms(Because carsickness and seasickness only have the signs of nausea and vomiting with no vertigo syndromes. Only rotation will have symptoms of dizziness and seasickness. Carsickness and seasickness with the symptom of dizziness are fabricated by experts to confuse the symptom of carsickness and seasickness with that of dizzy.) There is no saying that ancient people would feel nausea when they took the shaking carriages with large turbulence, this is because the shaking of ancient carriage is very violent, but there is no engine producing low-frequency noise, that won't cause carsickness. Different reasons will inevitably lead to different results. If the shaking of boat can really cause seasickness, so this kind of seasick symptom caused by shaking and seasickness caused by low-frequency noise will certainly be different, which can just prove seasickness has two reasons, low-frequency noise and shaking that will cause relevant two different seasickness. As I discovered in 1992, the nightmare was caused by two palpitations, racing heart and slow beating, which would correspondingly cause being pursued, attacked and people flying up and down. So seasickness has the same story with these two common nightmares.
In the past I have experienced a period of chronic fatigue that made me even more sensitive to motion. I have onserve that if I played on a computer a game that I wasn't used to the motiom mechanics, I would get that sickness quite quickly. A 3d video for example can make almost anyone feel sick. Therefore, the sickness must be related to the brain. If the motion you experience doesn't match what the brains expect to happen the brain needs to learn the new mechanics. If the flow information that comes is high, I suppose that some hormones are activated that enables the brain to cope with the high demand. However, if the hormone production cannot keep upwith the requirements the hormones levels go down and the brain cannot handle the situation well and you get sick. Now that I have passed the chronical fatigue phase, I can cope much better with things like that. The chronical fatigue was confirmed by symptoms like poor sleep during night and sleepiness during the day, slow recovery after exercise, poor digestion, joint pain, poor immunity (frequent colds),etc.
As a conclusion, it should be related to the hormone production capacity and overal endocrine strengthness.
Also if you have a problem with the inner ear for example it can cause random inputs that confuse the brain.