Researchers at Massachusetts General Hospital (USA) have discovered a brain wave pattern that predicts a person's ability to sleep despite outside noise. This discovery, published in Current Biology, could lead to new strategies to avoid noise disturbances from the brain, which would replace traditional earplugs.
This is the name given to any sexual behavior that occurs while asleep. Although there are no statistics, there are some documented cases. In 2004, the Australian doctor Peter Buchanan related the episode of a patient who, although she had a stable partner, went home sleepwalking and had relationships with strangers. And in 2005, the case of a man who was prosecuted for raping the woman he slept with came out in the press.
These episodes of drowsiness, whose duration can vary between a few minutes and a few hours, usually occur when our level of alertness declines. This is essentially what happens during so-called nap time.
Lack of sleep makes us want to eat and hunger takes away the desire to sleep. But why is this relationship between hunger and sleep due? A team of biologists has managed to isolate the genes that regulate it, according to 'Current Biology'.
A recent American study reveals that, after sleeping more than 7 hours, we see colors as they are. However, as the day progresses and waking hours increase, our perception of colors changes and we perceive neutral gray as slightly greenish or slightly pink, depending on the person and their mood.
When it comes to taking a nap, dolphins have several alternatives. They are often seen taking turns sleeping in pairs, so that one dolphin sleeps with the other dolphin being carried away by the wake, which keeps it moving and alert to any danger. But undoubtedly the most surprising thing about these marine mammals is their ability to put half the brain asleep and stay awake with the opposite hemisphere.
The latest study carried out by the National Sleep Foundation (USA) reveals that, in general, Americans do not get enough rest: 6.5 hours on average. Among Spaniards, 5.4% of the population suffers from insomnia, 64.7% sleeps on their side. As for the mattress, 57.2% use it for sexual intercourse in addition to sleeping, and 25% for reading.
Normally the body regulates its water content by balancing the intake of fluids (through thirst) and its elimination (through the production of urine). When the amount of water in the blood is low, cells called osmosensory order the release of vasopressin by the hypothalamus, an antidiuretic hormone that orders the body to retain as much fluid as possible.
Danni Büchner is invited to Sam Dylan's Halloween party. But the "Goodbye Germany" emigrant has no desire for many other party guests. And find clear words.
