Sleep – the absurd, amazing habit of losing consciousness for hours at the end – is so universal throughout the animal kingdom that we usually assume it is vital to survival. However, today scientists who have been repeatedly interrupted by the sleep of more than one thousand fruit fruits report that less sleep may be necessary for the maintenance of life than previously thought, even in a kind .
A small study involving dogs and cockroaches back in the late 19th century suggests that deprived sleep may result in a shortened span of life. But the procedures behind some of these studies can be difficult to say if test subjects are harmed by lack of sleep itself, or by the stress of treatment given to them ̵
The new study takes milder approach, in the hope of seeing the real effects of sleep deprivation. The automated system developed by researchers for tracking flies monitors their movements with cameras, which preserves any extended period without sleep movements. When they are not awakened over and over, the men slept about 10 hours a day, about five girls on average.
In order to keep the flies awake, system equipment researchers with small motors that gently tip flies at any time they still went for at least 20 seconds. By this method, researchers eliminate the rest of the rest of their lives, spending them hundreds of times a day if they do not snooze in time of the silence periods, they can sleep around 2.5 hours a day on average "When the results come from that experiment, it's amazing," says Giorgio Gilestro, a professor at Imperial College London who co- author of the study, which was published Wednesday in Science Advances.
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While women flying in the experiment died about ten days earlier than other flies,. Dr Gilestro said that perhaps any sleep is done in such a way that important maintenance can occur in a very short time, so little sleep is necessary to keep an organism alive.
The study has limits. It only looks at a single fly strain strain, said Dragana Rogulja, a Harvard professor who studies sleep with fruit flies. "In principle, I think it would be wonderful to try many strains," he said, to understand if the other flies, some of them could survive longer, responded similarly.
Moreover, not everyone agrees that scientists have succeeded in accurate recording when flies are awake or sleeping. For example, some seasons where flies made by small movements were scored as waking hours,
"I'm not convinced that the micro-movements they reported were not part of sleep behavior, "says Amita Sehgal, a professor at the University of Pennsylvania who initiated the study of sleep flies. If so, flies may be sleeping more than the researchers realized.
Dr. Gilestro said that these movements are not the same as the twitches that occur while animals are sleeping. Flies are walking between recorded small movements, and they appear to be feeding or repairing at those times. "We look at that and we think we can isolate this possibility," he said.
The job touches an interesting question: how much time spent dormant connect with useful sleep effects? For most of us, knowing how long the sleep you need to be healthy is likely to stay in academic interest. Unpleasant effects of missing out on a couple of hours, or even waking up at night, tend to prevent experimentation. But it is intriguing to think that some of those times spend less than others.