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Questions tagged [sleep]

For questions pertaining to the physiology and pathophysiology of sleep in humans and animals (e.g., sleep stages and their EEG patterns, sleep disturbances), along with psychological effects of sleep deprivation or fatigue.

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If stimulus triggers dopamine release, can dopamine release trigger memory recall of stimulus?

Modern science of sleep is starting to lean towards a viewpoint that dopamine has an important function in dreaming, and that dopaminergic pathways - mesolimbic and mesocortical are activated during ...
Alex Stone's user avatar
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6 votes
0 answers
231 views

Can our dreams tell us anything useful about ourselves?

This question is related to What is the current "accepted" science behind dream interpretation?, but here I am asking something more specific. Dream reports, also known as sleep mentation ...
Arnon Weinberg's user avatar
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4 votes
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Can somnambulism be self-induced?

Can somnambulism be self-induced? By "self-induced" I mean when a person starts in the waking state, induces sleep, and then takes themselves down into a deep sleep where somnambulism occurs,...
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4 votes
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60 views

Adaptation to Discrete Perturbation in Sleep?

Generally, are there and how long do lingering affects of polar sleep patterns affect someone? For example, assume someone slept for 2 hours one day and then slept for 14 hours the next. Their 2 day ...
Alvin Nunez's user avatar
4 votes
0 answers
149 views

Is the brain more active when you do something in a dream or when awake?

If brain activity is measured using EEG, is the brain more active when asleep and dreaming of doing something or doing the same thing when awake? Of course, if you do exercise (eg. running) when ...
CuriousSuperhero's user avatar
4 votes
0 answers
13k views

Is it true that drinking water before bed causes dreams to be more vivid?

Pavan Teja says on Psychtronics: Drink a lot of water. The more water you drink before bed, the more vivid your dreams. Is this true? Is this because I'm more alert not to, you know, and therefore ...
draks ...'s user avatar
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3 votes
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How does Free Running Sleep Disorder (FRSD) in humans get treated as of 2020s?

From reading accessible information about Free Running Sleep Disorder (FRSD) in humans, I understand it is a chronic and cyclic sleep disorder of a totally unentrained 24-hours circadian rhythm. ...
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3 votes
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What would be areas of ethical or safety concerns with a smartphone app interacting with people sleeping?

The BBC News article Hi-tech dreamcatcher defeats sleep amnesia mentions a recent talk by Adam Haar Horowitz and then describes some limited tests of an apparatus called Dormio at the MIT media lab, ...
uhoh's user avatar
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Why does daylight-saving have such a big impact on us and weekends don't?

Last weekend, at least in Germany, the clock got switched from 2:00 AM to 3:00 AM. Today I found a few articles, that suggest, that the daylight-saving has a big impact on people. Judges punish ...
besinnungslos's user avatar
3 votes
0 answers
55 views

Is there any evidence that better sleep reduces the symptoms of chronic severe Fibromyalgia?

Is there any evidence that better sleep reduces the symptoms of chronic severe Fibromyalgia? Severe fibromyalgia has been linked to the possible depletion of serotonin through prolonged and ...
Damien's user avatar
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Relation between Sleeping pattern and attention for ADHD people

Question 1: Does sleeping at different times daily affect the attention for ADHD and Non ADHD ? For example let us consider the below scenario, Day 1 : Sleep time is 1:00 AM Day 2 : Sleep time is 2:...
New one's user avatar
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How does the body experience free-fall during a hypnic jerk

Today I learned that a sudden jerk that you sometimes experience when you are just about to fall asleep due to a sense of free-fall or weightlessness is called a hypnic jerk. If, while sleeping, I ...
KharoBangdo's user avatar
3 votes
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58 views

When falling asleep does one always start with NREM1?

After my admittedly short research I could not find information which states that if a person is disturbed while their sleeping, let's say in NREM3 phase of their sleep cycle, and wakes up and then ...
tmaj's user avatar
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31 views

Does being rocked in a cradle or sleeping on a ship improve sleep quality in the same way?

As we all know, mothers tend to rock the child in a cradle or in their hands. Is there any research finding that supports the claim that rocked babies sleep better than ones only held still in their ...
LimeAndConconut's user avatar
2 votes
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Which sleep stage(s) account(s) for synaptic consolidation the most?

I learnt that long-term consolidation of memories happens vastly while we are asleep, and it is accompanied by synaptic changes. But exactly which stage(s) of our sleep account for the synaptic ...
LimeAndConconut's user avatar
2 votes
0 answers
25 views

Does varying evening exposure to blue light sabotage a consistent sleep/wake schedule?

Sleep hygiene measures include keeping a consistent bed time and, more importantly, wake time (Chaput et al., 2020). It is also suggested to minimize exposure to evening blue light (Chellappa et al., ...
Eggman's user avatar
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Is there research evidence to suggest that waking up slowly is more beneficial than waking up abruptly?

There are several articles I've found which seem to anecdotally back up the suggestion that waking up slowly is better than waking up abruptly, in terms of combatting sleep inertia: https://www....
Lou's user avatar
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2 votes
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How does a nap affect nighttime sleep duration?

How does a nap of the kind that is often recommended – that is, early afternoon and no more than 30 minutes – affect nighttime sleep, especially the duration of nighttime sleep, but also its quality? ...
Deniz's user avatar
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Is there a relationship between the amount of time spent awake/asleep, and interstitial waste removal in the brain?

With regard to the glymphatic system, is here a relationship between: The amount of time spent awake and the amount of interstitial waste accumulated in the brain? The amount of time spent asleep and ...
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2 votes
0 answers
88 views

How do afternoon naps fit in with segmented sleep?

Both segmented sleep and afternoon naps are recommended over a monophasic eight-hour block of sleep, but I don't see how they fit in with each other. Segmented sleep is the theory/hypothesis that ...
mic's user avatar
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1 vote
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Why don't we wake up from thirst?

Usually, we sleep up to 7-10 hours. A healthy human drinks 2-3 cups per hour. Why don't we wake up from thirst if during the day, it is normal to drink so much? I don't think that this is because you ...
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1 vote
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91 views

Sleep/Dream and Logical Decisions

I discovered that sleep tends to mitigate the 'stress' that one gets by trying to deal with logical problems like work related tasks and general daily life tasks. Does sleep do this by removing the ...
user0193's user avatar
  • 202
1 vote
0 answers
48 views

Effects of Red vs. Green ambient lighting on sleep

I would like to know if there has been study on the difference of effect of red vs green ambient light on human sleep. This is specifically in the interest of choosing between red or green alarm clock ...
Allen Pestaluky's user avatar
1 vote
0 answers
58 views

Why people feel more sleepy while doing something that's not interesting even when they are not actually tired?

We often see people and students yawning while reading a boring course book. But, when told about something interesting, their sleepiness vanishes. Why and how does this happen? What are the exact ...
Martin Medro's user avatar
1 vote
0 answers
81 views

What thoughts should one contemplate to minimize sleep latency?

While trying to fall asleep on night, I was wondering what my strategy would be if I was challenged to a competition where the goal was to fall asleep as fast as possible once I was lying in bed. The ...
Wuschelbeutel Kartoffelhuhn's user avatar
1 vote
0 answers
60 views

What causes the lack of focus due to sleep deprivation? What are the outcomes of this?

When one is sleepy and one attempt's to work on something cognitively demanding, such as doing algebra in one's head, or trying to imagine a house's interior in detail, what causes the "resistance" to ...
lhubbard01's user avatar
1 vote
0 answers
54 views

Do we have an "internal timer" when taking naps?

I´m doing some research and can´t find what control some reactions during naps. For example, after 1 year taking the same bus way home, my brain mastered the timing of napping. Wherever i get on, i ...
Ger K.'s user avatar
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1 vote
0 answers
87 views

Effect of mid-day sleep on mood and performance

Is there any clearly identifiable reason explaining why sleeping during the day (for longer than 30 minutes) could produce lowered mood, difficulty in concentrating, overall decreased cognitive ...
Marcin Kotowski's user avatar
0 votes
0 answers
52 views

How are dreams "experienced" if recall is correlated with waking during a specific cycle of sleep (REM sleep)?

My understanding of dreams, from some basic research, seems to be that they occur during REM sleep and are likely forgotten unless waking happens during REM sleep, which is correlated with dream ...
Richard C's user avatar
-1 votes
1 answer
140 views

NREM sleep and REM sleep

Why is the first stage of sleep non-rapid eye movement (NREM) sleep, and why does rapid eye movement (REM) not happen during this first stage, although we remain partially awake?
Manan Maharaj's user avatar