Why sleep problems often strange bed? Many people often find it difficult to sleep when sleep in an unfamiliar place, a strange bed, especially on the first night. The researchers at Brown University (USA) have found out why. The results are published in the journal Current Biology. The researchers performed three tests on 35 young, healthy and measured their brain activity in two consecutive nights in a strange place. As a result, the left part of the brain more active during sleep the first night than sleep Monday night. Explaining this, Yuka Sasaki led the research said that during sleep the first night in a strange place, a part of the brain in a state of alert for the purpose formula, soup to people can sleep and wake up fast easily when needed or in danger. Many people often find it difficult to sleep when sleeping in a strange place, a strange bed, especially on the first night. (Artwork) To find out the cause, the researchers have made some tests. They stimulate the left hemisphere with beeping noises in the ear of the person to sleep the first night, then realized they wake up more quickly when the right hemisphere stimulation by beeps on the left ear. This difference did not occur during sleep Monday night. This conclusion is only true for people with normal sleep habits, not suffer from insomnia or other sleep disorders. The brain alert in sleep also occurs in animals. Some species of birds and several species of marine mammals also have a habit of sleeping with one eye.
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