Scientists have found the cause of poor sleep in a new place – the Russian newspaper

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Experts from Brown University (Rhode Island) discovered why many people can not sleep away from home. The fact is that the new place they perceive as unsafe, and during sleep is one of the hemispheres of the brain retains the increased activity. The study is published in the journal Current Biology.

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The researchers used different methods of scanning the brain (magnetoencephalography, polysomnography, structural MRI) to 11 healthy volunteers. These people were asked to sleep for two nights in the laboratory.

 

The test, being in an unfamiliar place, more difficult to fall asleep. In addition, during the experiment they periodically lost different sounds in the headphones.

 

During the first night of slow brainwave activity ( “talk” about the depth of sleep) in their left hemisphere was much lower than in the right. In addition, the sound in headphones left hemisphere reaction was much faster and “brighter”.

 

– The results are consistent with the hypothesis that difficulty sleeping in a new environment needed for survival in a potentially dangerous place – say the study authors. – The left hemisphere of the brain is more alert, awake and sleep more quickly if you notice unfamiliar signals

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About the same mechanism occurs in animals. Thus, the “one-hemisphere” dream is typical for some birds and marine mammals such as whales and dolphins. This allows them to remain vigilant and occasionally come to the surface to breath.

 

However, the authors of the study point out that the human brain can be easily adapted. That’s why people are often on business trips, regular sleep problems do not experience.

 

Sometimes reduce the “first night effect” can be, if you take your pillow to a new location. It may also help to decrease glare and off the digital screen for a couple of hours before bedtime, reducing caffeine intake during the second half of the day.