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Every time I take a plane, I can always meet a crying baby, which is a mystery of every trip. Is it because the child cries too much, or is it my bad luck?

And the children on the plane can't be coaxed well. | giphy however, when we look at this issue from a scientific point of view, we will find that children are always crying on the plane, and it is really possible that it is the plane!

In fact, research shows that not only children, but also adults who are emotionally stable, are more likely to cry while flying.

A study of airline passengers at Gatwick Airport found that 15 per cent of men and 6 per cent of women felt they were more likely to cry when they watched sad movies on the plane. In other words, many people become more emotional after they get on the plane.

Why does the plane make people sad? Giphy scientists have found that while sitting on a plane, although we still feel normal, our senses, emotions, and even our body's immune system may be changed by the plane.

In flight, due to the higher altitude, the air pressure in the cabin of the aircraft is lower. Although it will be pressurized, the air pressure in the cabin is about 0.8bar, while the standard atmospheric pressure in our normal life is 1.01bar. Although our bodies may not have obvious feelings, in fact, this imperceptible "lack of oxygen" can cause some changes in our brains.

Some studies have found that if a person is not fully adapted to the environment, if he is exposed to a high altitude, there will be significant emotional changes. In 1988, scientists studied the problem systematically for the first time and found that at high altitudes (4300 meters), people felt more sleepy, thought less clearly, and were less friendly and happy. The longer the time goes on, the more the mood changes will intensify.

With the increasing altitude, the indicators of friendliness, clear thinking and dizziness have changed from high to low. | Ref. 3. In another study, people only climb 300 meters a day (that is, the altitude changes relatively slowly), but fatigue is still obviously increasing.

In addition to our own mood, there will be some changes in our brain's cognitive ability due to insufficient oxygen supply. On a mountain with an altitude of about 4000 meters, participants took 10 cognitive tests and found that their scores in all eight tests were significantly lower, as well as their logical reasoning, judgment and vigilance.

So don't work overtime or do your homework when you fly. Under the condition of low pressure and hypoxia at higher elevations, our memory abilities will also be impaired, including short-term memory, working memory and so on.

In order to ensure flight safety, pilots and crew members often have to undergo various courses and rigorous training. In addition to operational training, they also have to undergo health check-ups and training tests in cabins that simulate low-pressure conditions to ensure that they have a keen sense of judgment.

For ordinary people like us, although the cabin environment has been relatively mild, the air pressure is not very low, so we are still in a normal condition, but the mood and cognitive level will be affected to a certain extent. Scientists have found that people's reaction speed slows down even at an altitude of 1, 000 meters.

Don't worry about the professionalism of the crew! After all, they are all professionally trained. | Pixabay basically, when people who are used to living on the ground suddenly come to a low-pressure environment with limited oxygen supply, a series of changes will take place inside the body to adapt to this process. Hypoxia in the brain will lead to changes in levels of various hormones, such as acetylcholine, which is associated with memory, and our mood will change as well.

In addition, the researchers also found that hypoxia during air travel can also cause other physiological changes, such as immunity and metabolism.

Therefore, due to the differences between the environment on the plane and the ground, its impact is very complex. It has been written before that the airplane environment can affect our other senses, such as why airplane meals become so bad. In addition, studies have shown that dry, low-pressure cabins also begin to itch the skin and aggravate the hangover. Coupled with the narrow seats, people who fly will inevitably feel more nervous, vulnerable and lonely than usual.

The environment of the plane will have all kinds of effects on us. | Pixabay people speculate that the complex effects of low pressure and dry environment on the body may be the reason why children can't stop crying and adults can't help crying.

Do you have the feeling that although you have been sitting in your seat, you will still feel exhausted after a long flight? After all, from the perspective of research, flying is a dual emotional and physical consumption. (no

After a flight, I felt that my body had been hollowed out. | Giphy so, if you meet another crying baby when you are on a plane next time, you might as well. Cry with you?

Reference:

[1] Hinkelbein, Jochen, et al. "Thirty minutes of hypobaric hypoxia provokes alterations of immune response, haemostasis, and metabolism proteins in human serum." International Journal of Molecular Sciences 18.9 (2017): 1882.

[2] Shukitt-Hale, Barbara, and Harris R. Lieberman. "The effect of altitude on cognitive performance and mood states." Nutritional Needs in Cold and in High-Altitude Environments; Maniott, B., Carlson, SJ, Eds (1996).

[3] Neuhaus, Christopher, and Jochen Hinkelbein. "Cognitive responses to hypobaric hypoxia: implications for aviation training." Psychology research and behavior management 7 (2014): 297

This article is from the official Wechat account: bring Science Home (ID:steamforkids), author: everything.

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