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What is the real reason we sleep?

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61–70 of 94 posts

Re: What is the real reason we sleep?

#61

Conjecture (half serious): we won't get strong AI until we figure out why we need to sleep.

I just find it the most amazing thing. 8 hours a day, we all do it, and we don't know why. It's akin to having part of the globe unexplored.

Anyone got any recommendations on lay-person books on sleep/subconscious?

Re: What is the real reason we sleep?

#62
This rambling summary article touches briefly on "natural selection" but no one has yet to look into what seems obvious. In mammals where most parents have to care for their young, if the young did not sleep, did not give their parents a break for long periods, they would not survive. Therefore sleep is selected for. Those offspring that sleep survive, passing on the sleep trait, to their offspring. - Source: parent.

Re: What is the real reason we sleep?

#63

This rambling summary article touches briefly on "natural selection" but no one has yet to look into what seems obvious. In mammals where most parents have to care for their young, if the young did not sleep, did not give their parents a break for long periods, they would not survive. Therefore sleep is selected for. Those offspring that sleep survive, passing on the sleep trait, to their offspring. - Source: parent.

While I agree that sounds like a plausible theory (and sort of reminds of the domestication theory... ie cute animals get more parental and human focus) but there are just too many animals that barely take care of their young that still sleep.... for example sharks sleep.

Re: What is the real reason we sleep?

#64

This rambling summary article touches briefly on "natural selection" but no one has yet to look into what seems obvious. In mammals where most parents have to care for their young, if the young did not sleep, did not give their parents a break for long periods, they would not survive. Therefore sleep is selected for. Those offspring that sleep survive, passing on the sleep trait, to their offspring. - Source: parent.

[deleted]

Re: What is the real reason we sleep?

#65
post #37

Conjecture (half serious): we won't get strong AI until we figure out why we need to sleep.

Begins to sound like a science fiction novel where a bunch of sleep researchers discover that far from being 'down time' sleep is actually a period where our neural hardware is being used by beings from another dimension to perform some nefarious calculation. Or if Douglas Adams were still alive a P2P version of Deep Thought.

Relevant short story by Issac Asimov: https://en.wikipedia.org/wiki/Hostess_(short_story)

Re: What is the real reason we sleep?

#66
A related question: why do some (actually a lot of) people grind their teeth during sleep?

According to wikipedia: The ICSD-R states that 85–90% of the general population grind their teeth to a degree at some point during their life, although only 5% will develop a clinical condition.

Re: What is the real reason we sleep?

#67

Earlier quoted context omitted.

You're sure they weren't talking about people on polyphasic sleep schedules? Also, fatal familial insomnia is a thing, so we have a pretty good idea of what happens when people are deprived of sleep for too long.

FFI is a bad model for long term sleep deprivation since massive neuronal loss is also involved.

Just asking: do we know that massive neuronal loss does not occur with "normal" long term sleep deprivation?

Re: What is the real reason we sleep?

#68
post #66

A related question: why do some (actually a lot of) people grind their teeth during sleep? According to wikipedia: The ICSD-R states that 85–90% of the general population grind their teeth to a degree at some point during their life, although only 5% will develop a clinical condition.

I'm not sure, but anecdotally, one person I know said that it had been an issue, until he started limiting how much liquid he drank starting 3-4 hrs before bed.

Re: What is the real reason we sleep?

#69
post #66

A related question: why do some (actually a lot of) people grind their teeth during sleep? According to wikipedia: The ICSD-R states that 85–90% of the general population grind their teeth to a degree at some point during their life, although only 5% will develop a clinical condition.

Have their been any notable causes? My money is on stress.

Re: What is the real reason we sleep?

#70
post #53

Earlier quoted context omitted.

Before CPAP, How many times do you actually remember waking up in middle of night?

From someone else with apnea: absolutely none at all. I didn't have to use CPAP to treat it though, so other people's experiences might be different.

How did you treat it?
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