3 ms·

> Sleep loss, specifically dream loss, leads to an overfitted brain that can still memorize and learn but fails to generalize appropriately Curious where this

> Sleep loss, specifically dream loss, leads to an overfitted brain that can still memorize and learn but fails to generalize appropriately Curious where this claim came from. Obviously a lack of sleep will degrade your day-to-day performance, but I almost never have dreams.

enneff 5y ago
Or you just don’t remember them.
- babelfish 5y ago
  It's a very distinct feeling waking up thinking "I did not dream last night" vs "I had a dream last night but don't remember it" IMO
  - unparagoned 5y ago
    Do you have any evidence for that. It's very likely you had dreams with both experiences but just didn't realise it.
    - dboreham 5y ago
      It seems more likely that the brain has some kind of retention filter on dreams to try to sort the random useless signals from, for example when you deduce the structure of the benzene molecule. Probably all humans dream every night, unless there's some major issue with sleep, but only dreams passing the filter are remembered. Those on the threshold are "remembered as existing" but not the content.
  - enneff 5y ago
    I think that probably has more to do with how recently you were in REM sleep (which is when most dreams occur). If you have the sensation of waking up from a dream, whether you remember it or not, you likely woke up from REM sleep. If you don't think you dreamt at all, then perhaps you just were in REM sleep much earlier during your sleep.
azeirah 5y ago
From what I recall, everybody dreams an approximately equal amount of time every night, the only major difference is how much of it is forgotten when you wake up. I wish I recalled (..or saved) the paper, but waking up releases a chemical in the brain that makes you actively and quickly forget what you just dreamed about.
- awb 5y ago
  That’s interesting. I’ve noticed that if I forget a dream and then meditate later in the day it often comes back or at least bits and pieces do some 5-15 minutes into the meditation.
- tgv 5y ago
  Without very, very strong evidence, that's BS, or more politely put: a retroactive fit of the concept to the operationalization, in this case probably the REM observation which vaguely correlates with dreaming.

enneff 5y ago

Or you just don’t remember them.

babelfish 5y ago
It's a very distinct feeling waking up thinking "I did not dream last night" vs "I had a dream last night but don't remember it" IMO
- unparagoned 5y ago
  Do you have any evidence for that. It's very likely you had dreams with both experiences but just didn't realise it.
  - dboreham 5y ago
    It seems more likely that the brain has some kind of retention filter on dreams to try to sort the random useless signals from, for example when you deduce the structure of the benzene molecule. Probably all humans dream every night, unless there's some major issue with sleep, but only dreams passing the filter are remembered. Those on the threshold are "remembered as existing" but not the content.
- enneff 5y ago
  I think that probably has more to do with how recently you were in REM sleep (which is when most dreams occur). If you have the sensation of waking up from a dream, whether you remember it or not, you likely woke up from REM sleep. If you don't think you dreamt at all, then perhaps you just were in REM sleep much earlier during your sleep.

azeirah 5y ago

From what I recall, everybody dreams an approximately equal amount of time every night, the only major difference is how much of it is forgotten when you wake up. I wish I recalled (..or saved) the paper, but waking up releases a chemical in the brain that makes you actively and quickly forget what you just dreamed about.

awb 5y ago
That’s interesting. I’ve noticed that if I forget a dream and then meditate later in the day it often comes back or at least bits and pieces do some 5-15 minutes into the meditation.
tgv 5y ago
Without very, very strong evidence, that's BS, or more politely put: a retroactive fit of the concept to the operationalization, in this case probably the REM observation which vaguely correlates with dreaming.