20 messages over 3 pages: 1 2 3
patrickwilken Senior Member Germany radiant-flux.net Joined 4536 days ago 1546 posts - 3200 votes Studies: German
| Message 17 of 20 15 July 2012 at 9:07am | IP Logged |
Bao wrote:
druckfehler wrote:
I wish I had a normal sleeping pattern. I keep trying to sleep earlier, but I oscillate between 1am and 5am (I know! 5am is pretty dismal). Maybe I have to move to another time zone to get it under control (would also be beneficial for language study, I guess :D). In any case, if I get the right amount of sleep and don't drastically change the pattern all the time my memory seems okay regardless. |
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Delayed sleep phase disorder - I can't find the source, may be that is was my psych teacher who said it - seems to be ok for a couple of days in the new time zone and then it returns, because it doesn't mean your cicadian rhytm is adjusted to a different time zone, it is adjusted to the time zone where you live, but following a different schedule.
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Delayed Sleep Disorder sounds serious! I would have just said it sounds like you are a 'owl' type sleeper (i.e., someone who regularly goes to bed late), as opposed to a 'lark' (someone who regularly gets up early). Nothing to about it. Changing time zones won't help.
I am definitely an owl, but what worries me now in my 40s is that I also wake early. I used to put it down to stress, but I was talking to a friend the other day and she told me that she and other friends of hers also had trouble with sleep. So perhaps this is just a sign of aging. The good news is that five hours sleep, while a bit unpleasant, doesn't kill me like it used to in my 20s. Coffee is my friend.
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| patrickwilken Senior Member Germany radiant-flux.net Joined 4536 days ago 1546 posts - 3200 votes Studies: German
| Message 18 of 20 15 July 2012 at 9:16am | IP Logged |
My memory of the psychological literature on sleep is mostly about twenty years out of date, but what I remember is:
1. Memory consolidation is associated with non-REM sleep (so the type of sleep where you have thoughts going through your mind, if you have any conscious experiences at all; not the type where you generally experience vivid dreams).
2. While sleep goes through a series of 90min cycles, there is a loading of REM sleep into the later part the night, so waking up early will disproportionately cut down on REM, not non-REM sleep, and so shouldn't affect memory consolidation too much.
3. The only consistent memory consolidation that I had read about in non-REM was associated with motor learning of tasks (i.e., hand movements in the like). So you could see a jump in someone's ability to mirror trace a shape with their left hand (a difficult motor task) after sleep; or more prosaically their ability to play a computer game. I haven't seen any literature on memory improvements for stuff like languages.
Anyone know the more recent literature? It's possible/probable that all the points above are now wrong.
Edited by patrickwilken on 15 July 2012 at 9:22am
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| Bao Diglot Senior Member Germany tinyurl.com/pe4kqe5 Joined 5769 days ago 2256 posts - 4046 votes Speaks: German*, English Studies: French, Spanish, Japanese, Mandarin
| Message 19 of 20 15 July 2012 at 2:58pm | IP Logged |
patrickwilken wrote:
Delayed Sleep Disorder sounds serious! I would have just said it sounds like you are a 'owl' type sleeper (i.e., someone who regularly goes to bed late), as opposed to a 'lark' (someone who regularly gets up early). Nothing to about it. Changing time zones won't help. |
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An 'owl' is a person who gets enough sleep most nights when working a daytime job, even when they are grumpy in the mornings. I'd say, regular bed time between 10pm and 1am. Delayed sleep phase disorder means that a person either doesn't get enough sleep, or can't hold a daytime job because of their sleeping pattern, and that they suffer from the effects their natural circadian rhythm has. I mentioned the disorder because there is more relevent material to find on it than for 'owls' and 'larks' - terms that are very much part of folklore these days.
Wulfgar wrote:
Has anybody read anything on the optimum length nap? I've read anywhere from 15 minutes to 90 minutes. I
suppose it depends on various factors, but it would be nice to figure out how to optimize it. |
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It depends on how long your sleep phases at the beginning of sleeping are. What you want is to wake up during a stage 2 phase, so that you are alert afterwards, and not to wake up during a stage that leads to sleep inertia.
You'll just have to experiment to find out how long it takes you to reach that stage for the first time in a cycle. Maybe you're even one of those enviable people who actually can think 'ok I'm going to take a nap and in 30 minutes I'll wake up' - and then wake up on time, without an alarm clock.
Edited by Bao on 15 July 2012 at 3:18pm
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| dinguino Nonaglot Groupie GermanyRegistered users can see my Skype Name Joined 4757 days ago 55 posts - 96 votes Speaks: English, German*, FrenchC1, Catalan, Latin, Italian, Spanish, Dutch, Portuguese Studies: Norwegian, Turkish, Russian, Irish
| Message 20 of 20 15 July 2012 at 11:47pm | IP Logged |
This is a bit scary how I get to know that many forum members around here have the same "problems" or call it oddities, extraordinariness like me...
I am 20 years old and I can't remember the last time I got to bed before 2/3 am regardless of when I have to get up the next morning. And whenever I don't work 2 or 3 days and I have nothing special to do, I easily stay up till 7 am and sleep till afternoon which causes some problems when I have to go to work some days later.
But I noticed that I am much more active in the night!
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