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fanieh
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Why we sleep is said to be one of the greatest unsolved mysteries of science. Haven't they cracked it yet? is there any animal or even living system that doesn't sleep?
fanieh said:Why we sleep is said to be one of the greatest unsolved mysteries of science. Haven't they cracked it yet?
fanieh said:is there any animal or even living system that doesn't sleep?
Drakkith said:Despite extensive research, we aren't entirely sure on all the functions of sleep nor on why sleep is necessary for these functions. The brain is an incredibly complex biological system, even in creatures as simple as insects. Add to that all the different ways the brain interacts with the body and the difficulty of probing things at the microscopic scale and you quickly run into enormous hurdles. Simply figuring out how a single cell works has taken decades and decades of research, and we still don't know all the details. How do you observe all the different chemical and physical changes going on in a cell without killing it? How do you observe the interactions of neurons with other neurons without being able to directly observe the propagation every electrical impulse and chemical change throughout the entire network of neurons? And then you have to take into account the fact that there are multiple neurotransmitters, hormones, inhibitory signals, excitation signals, and countless other things all happening at the same time. And you can't simply dissect a creature to figure these things out, as a dead brain does none of the above, so you have very little to observe.
Not sure. Try this article: https://en.wikipedia.org/wiki/Sleep_(non-human)
fanieh said:Are their living systems without any brains.. do they also sleep?
fanieh said:Have we fully mastered the cell.. or understood each of the function down to microdetails?
fanieh said:Maybe cells themselves need rest?
fanieh said:But then heart cells continue to beat without rest (is this true).. so can't we say sleep benefit each individual cell?
jim mcnamara said:And no, I am not going to try to find the reference for this one. I am not even sure where to start. Someone else may know.
They argue that moving from the trees to the ground allowed our ancestors to sleep more deeply – "which could in turn have affected cognition", says Samson.
fanieh said:The most accessible or significant are the rats experiment in which they died within 2 weeks when they lack sleep. Has any others replicated this?
Fervent Freyja said:True. A good article on the topic and loaded with citations:
Yes, many people have died trying to go without sleep, a world record holder went 11 days without sleeping: https://en.wikipedia.org/wiki/Randy_Gardner_(record_holder)
You only have to look at our own world.fanieh said:Could sleeping occur because the Earth has night and day cycle and somehow evolution integrate this into the system? Can this be refuted? In a planet with two suns where there is no night. Perhaps there is no need for sleep?
The midnight sun is a natural phenomenon that occurs in the summer months in places north of the Arctic Circle or south of the Antarctic Circle, when the sun remains visible at the local midnight. Around thesummer solstice (approximately 21 June in the Northern Hemisphereand 22 December in the Southern Hemisphere) the sun is visible for the full 24 hours, given fair weather. The number of days per year with potential midnight sun increases the farther towards either pole one goes. Although approximately defined by the polar circles, in practice the midnight sun can be seen as much as 55 miles (90 km) outside the polar circle, as described below, and the exact latitudes of the farthest reaches of midnight sun depend on topography and vary slightly year-to-year.
There are no permanent, economically autonomous human settlements south of the Antarctic Circle, only research stations, so the countries and territories whose populations experience the midnight sun are limited to those crossed by the Arctic Circle: Canada(Yukon, Northwest Territories, and Nunavut), Greenland, Iceland, Finland, Norway, Russia, Sweden, and the United States(Alaska). A quarter of Finland's territory lies north of the Arctic Circle, and at the country's northernmost point the sun does not set at all for 60 days during summer. In Svalbard, Norway, the northernmost inhabited region of Europe, there is no sunset from approximately 19 April to 23 August. The extreme sites are the poles, where the sun can be continuously visible for half the year.
Thanks.The Jellyfish has no nervous system and no brain yet it still sleeps.
jim mcnamara said:Please provide a reference for: Thanks.
fanieh said:Sleeping seems to have more to do with memory consolidation and some brain housekeeping. So why is this not accepted as the final answer?
fanieh said:When I lack sleep. I get colds and upper respiraratory infection more easily. But isn't it that our immune cells travel in the body by Brownian motion.. so what do you think is the effect of lack of sleep on the immune system really? Does it mean the immune cells have to sleep too and they get weaker if they lack sleep?
fanieh said:Also I can't find knock out fruit fly or experiments where they are not made to sleep for days.. do they also die like the rats?
fanieh said:isn't it that our immune cells travel in the body by Brownian motion
Sleep is a vital biological function that allows our bodies and minds to rest and rejuvenate. It is essential for maintaining proper physical, mental, and emotional health. During sleep, our bodies repair and regenerate tissues, consolidate memories, and regulate hormones and metabolism. Without enough sleep, we may experience fatigue, difficulty concentrating, and other negative effects on our health.
The recommended amount of sleep varies depending on age and individual needs. On average, adults need 7-9 hours of sleep per night, while teenagers and children need 8-10 hours. However, some people may require more or less sleep to function optimally. It is important to listen to your body and prioritize getting enough sleep each night.
While we sleep, our brains go through different stages of sleep, each with its unique patterns of brain activity. During the first stage, our brains produce alpha and theta waves, and our muscles relax. In the later stages, our brains produce slower delta waves, and our bodies are in a deep state of relaxation. During REM (rapid eye movement) sleep, our brains become more active, and our eyes move rapidly. This is also when we experience vivid dreams.
No, we cannot function without sleep. Although there are rare cases of people who claim to have a genetic mutation that allows them to function on minimal sleep, the majority of us require an adequate amount of sleep to function effectively. Chronic sleep deprivation can have severe consequences on our physical and mental health, including decreased cognitive function, mood disorders, and an increased risk of chronic diseases.
There are several ways to improve our sleep, including establishing a regular sleep schedule, creating a comfortable sleep environment, avoiding caffeine and electronics before bedtime, and practicing relaxation techniques like meditation or deep breathing. It is also essential to address any underlying sleep disorders or medical conditions that may be disrupting our sleep. Consult with a healthcare professional for personalized recommendations on improving your sleep quality.