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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3answers
140 views

How effective is lying down with eyes closed as a substitute for sleep?

Resting, as opposed to sleeping, helps with physical recovery and relaxation, but much of the benefit of real sleep is mental. If I can't sleep, how much, if any, sleep-related benefit is gained by ...
2
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1answer
590 views

Does our consciousness die when we go to sleep or fall into a coma?

I have sometimes wondered if our consciousness dies when we go to sleep at night or perhaps when we enter a deep coma, like from brain damage, for example. When we wake, or are woken, a new ...
2
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1answer
107 views

Can dreams predict the future? [duplicate]

On Quora there is a discussion that dreams can predict the future. I have experienced the feeling that things happening to me in real-life had occurred in my dreams, before these events actually ...
2
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1answer
124 views

Can we interconnect with other people mentally during dreaming? [closed]

In some of my dreams, I have seen people that I know, and I ask them about it the day after and they say that they saw me too. My older sister said that she had exactly the same dream as one of her ...
2
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1answer
71 views

Does dreaming cuts our sleeping hours?

If I am dreaming a lot at night, how many effective hours am I sleeping at night? After dreaming heavily at night, when I wake up in the morning I feel sluggish as if I haven't slept properly. Does ...
2
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1answer
71 views

Is sleep time related to any other characteristic?

Some people say that smart people sleep less, other say that smart people sleep more. I also heard that Napoleon used to sleep 4h/day. Is sleep-time related to any other characteristics like ...
2
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1answer
65 views

What evidences this technique of visualizing different color words in sequence, to help you sleep?

What's this technique called? Any evidence? I'll make it easier. Visualize the word Red. In big red letters. Examine your creation but don't judge harshly. After a few seconds, switch to the word ...
2
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1answer
20 views

Do we have technology to ethically measure the changes of interstitial space in sleeping humans?

Lulu Xie et al write in their paper Sleep Drives Metabolite Clearance from the Adult Brain: Using real-time assessments of tetramethylammonium diffusion and two-photon imaging in live mice, we show ...
2
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1answer
156 views

Is there an easy way to tell whether I woke up during REM or non-REM sleep?

I wake up during the night. Is there an easy way to tell whether I've woken up during REM or non-REM sleep? One way could be to look up the time, calculate how long I've slept and then take into ...
2
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1answer
77 views

Does sleep-talking typically happen during NREM or REM sleep?

I have observed some of my mother's sleep-talking and have even attempted to reply / speak to her during such episodes. In my experience, I have found sleep-talking to be a part of her dream. In some ...
2
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0answers
37 views

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....
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0answers
99 views

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. ...
2
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0answers
35 views

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? ...
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0answers
20 views

why we forget dreams when we wake up? [duplicate]

What is the explanation for which we forget easily our dreams when we wake up?. It has a biological sense, such as to avoid to confuse reality world experiences with dream world experiences? or there ...
2
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0answers
31 views

Third time's the Charm: any research into how we learn from error?

I have often told people that I make a mistake two different ways before I really understand a situation. Is there any research that explains how and why this works? As an analogy, there is something ...
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1answer
497 views

Is our sense of smell heightened when we are asleep?

My question is whether our sense of smell is stronger when we sleep? From an evolutionary perspective this could have been beneficial in terms of runaway camp fires, marauding saber tooth tigers or ...
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1answer
5k views

Why didn't I wake up after dying in a dream? [closed]

So I found a lot of articles about the facts why death in dream wakes us up, like that our brain doesn't know what happens after death, or because of the adrenaline and so on... I had two dreams in my ...
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0answers
28 views

Change in perceived direction of body when laying in bed [closed]

Sometimes when I lie in bed, with my eyes closed, I get the sense that my head is actually at the bottom of the bed, where my feet usually are, when I know it is still resting on the pillow on the top ...
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0answers
40 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 ...
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0answers
22 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 ...
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0answers
100 views

Reason for experiencing electric current flowing through body during sleep from top to bottom [closed]

I know about sleep paralysis and there is several information about it, available over literature. Sleep paralysis is a temporary inability to move or speak that occurs when you're waking up or ...
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0answers
45 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 ...
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0answers
48 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 ...
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0answers
23 views

How come sleeping during the day induces lucid dreaming and sleep paralysis later on at night? [closed]

I've noticed that when I sleep during the daytime (even if it's for as little as 5 minutes), later on that night I won't simply fall asleep normally. I'll begin to fall asleep aware of the entire ...
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0answers
52 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 ...
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0answers
16 views

Best ways to remember dreams [duplicate]

What are the best techniques to recall dreams? I am especially interested in scientific research that would prove their effectiveness
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0answers
75 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 ...
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0answers
25 views

Sleep deprivation effect on brain [duplicate]

I have a doubt reg. sleep deprivation. I did not sleep for past 24 hours(Because I did not feel sleepy),but slept the next day for full 8 hours. I do not feel the difference So my questions are, ...
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0answers
85 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 ...
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1answer
4k views

Why might sleeping on the floor alleviate PTSD symptoms?

Question: Does sleeping on the floor have similar neurotransmitter effects, as sleeping under a weighted blanket might? Psychiatrically, would it be expected that a person having PTSD would find ...
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1answer
43 views

Is this expected to happen while asleep?

I always knew that, while asleep, stuff like processing words and/or reading texts could not be done by the brain. I'm not even a student in the area, so by knew you could understand as vulgar ...
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1answer
49 views

Why am I sometimes astonished when I doze [closed]

Why am I sometimes extremely astonished with no reason when I doze, especially I am really exhausted? When I am tired and doze, I am sometimes stunned so suddenly that my whole body shakes and ...
0
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1answer
36 views

Are there any long term cognitive impairments from prolonged period reduced sleep? [closed]

What are the consequences of chronic lack of sleep? For example, insomniacs are known to sleep less than normal sleeping individuals. I am wondering if there are any long term cognitive impairments ...
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1answer
257 views

What is the effect of Daylight Saving Time on attentiveness and productivity?

This weekend the clocks were set an our later (in some countries), such that the daylight lasts an hour longer in the evening. This has several reasons, among which a reduction in energy consumption ...
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0answers
22 views

What is the permanent effect of sleep-deprivation on the brain and its cognitive function?

I know that many teenagers suffer from chronic sleep-deprivation. This varies from country to country, but it is widely known that especially students suffer from this condition. Most have a mild form ...
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0answers
19 views

What does it mean if you are in a sleeping state and you hear a sound that your brain is immediately aware of?

When you are in a sleeping state ,i.e.lying in bed before your alarm clock rings, and you hear a noise or a voice that is not too loud and is not continuous but impulsive, and your brain immediately ...
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1answer
38 views

Mean brainwave amplitude

When measuring nocturnal sleep for a person that has narcolepsy using an EEG a distinctive lack or reduction of slow wave sleep activity is indicated. Slow wave sleep brainwaves are the brainwaves ...
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0answers
36 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 ...
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2answers
91 views

Is there a known mechanism by which people fall asleep less easy after watching TV?

It's my experience that people (I am one of them) tend to fall asleep while watching television. Afterwards, when lying in bed, sleep doesn't come as easy as when they were watching television. Is ...
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1answer
128 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?
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0answers
74 views

Can people hallucinate paranormal activity with surrounding physical objects during night terrors and sleep paralysis?

I've been watching first-hand accounts of people who have experienced sleep paralysis and night terrors. My own personal impression after watching and reading many such accounts is that the most ...
-3
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1answer
109 views

Effects of caffeine on fatigue [closed]

Obviously caffeine is a stimulant, and wakes us up. Is there any research into how it affects fatigue: e.g. how different it is to rest (i.e. I'm not asking about the pathways by which caffeine ...
-3
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1answer
660 views

Sleep is God, Go Worship! How? [closed]

Jim Butcher once said that Sleep is God, Go Worship However, Benjamin Franklin once said that there is plenty of time to sleep when you are dead Thomas Edison echoed this when he stated ...

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