I wanted to add a comment to address a common question I get about this video: Although many sources may still refer to sleep as consisting of 4 stages + REM, this approach to sleep staging isn't typically used anymore. Stage 3 and 4 were very similar, and are now usually combined into one stage (stage 3). Groups like the American Academy of Sleep Medicine, for example, consider sleep to consist of stages 1, 2, 3, and REM sleep.
I think I have a problem, I have sleep paralysis almost every night or morning, it's so weird cause I heard people see things but luckily for me I don't see any demons lol, just paralyzed for a minute or so. I can se my surroundings very well and move my eyes, but that's it.
Your videos are helping me understand so much of the content from my physiological psychology course. Thank you so much for making these videos. Let's hope I pass my exam in 3 days.
Great video. Helpful. I'm doing research for a comic book I'm working on and I was looking for a description of brain wave activity during sleep. Thanks!
Just now watched the video. Thanks for the simplified explanation. I am a mom of 2 beautiful daughters. One baby is 6 months old and the elder one is 1.5 yrs old. I have not slept a continuous 4 hrs sleep in last 1.5 years. I just wonder will this effect my health anyway. Once I make formula and feed one baby and make her sleep the other one will wake up. Then once I make the first one sleep and I lie down for sleeping I do not fall asleep, I try a lot to initiate sleep and once I reach into sleep either one will wake up and cry... Can you please tell me will this affect my health? How can I get a quality sleep? Thanks in advance
I work 5 nights a week, and have done for about 12 years. I use (vape) cannabis to help me sleep a solid 6-8 hours everyday, despite temperature and noise levels. I just got a fitbit which tracks my sleep cycles, and suddenly I'm obsessed with the data it produces and am watching all videos on sleep cycles to try to see if mine is normal. I'd always assumed that cannabis mostly kept me in deep sleep, but it turns out I spend most of the day in light sleep, with seemingly random (and short) periods of deep and REM sleep. Sometimes I feel refreshed when I wake up, and sometimes I don't. I never remember any dreams, but that might just be a short-term memory issue.
The effects of cannabis on sleep are still not clearly understood. Some have suggested it might be helpful for sleep in the short-term, others have found that it might have a negative impact on sleep quality even if it helps someone stay asleep for the night (see link.springer.com/article/10.1007%2Fs11920-017-0775-9). So ideally, you'd find a way to sleep without relying on it. But at the same time, be careful of relying too much on your fitbit to tell you exactly what's going on in your sleep. Some studies have found sleep tracking devices to not be accurate enough to differentiate between sleep stages. I don't know what kind of fitbit you have, but here's a study that looked at fitbits specifically and found they had some inaccuracies in measuring relatively simple things like total sleep time: www.ncbi.nlm.nih.gov/pmc/articles/PMC4507738/. Measuring stages is even more complicated...
@@neurochallenged Thanks for the info, will take a look. Ideally I'd like to be able to sleep without cannabis, but we don't really have air con in the uk, and I have to sleep in 30+ celcius in the summer. I can't close my window, so my neighbours kids having a water fight in the garden can clearly be heard. I don't know how I could be expected to sleep well without some sort of hypnotic, and I've convinced myself that cannabis is the least harmful. I might have more of a chance in the winter, I should probably try. I have a fitbit charge 3 which has a heart rate monitor, but I realise its accuracy hasn't really been proven, at least not to me. It does seem to do a good job of detecting when I fall asleep and wake up though. I honestly don't know how it would tell between light and deep sleep without reading my brainwaves though, I think I'm a fairly still sleeper. I guess REM sleep causes a rise in heart rate.
@@FriedEgg101 It's mostly using changes in heart rate to differentiate between those stages: blog.fitbit.com/heart-rate-during-sleep-stages/ But you're probably a better judge of whether or not you had a good night's sleep than a sleep-tracking device is.
I tried moving my head when sleeping cause that time i was aware that i was sleeping, but didn't and then thought of moving my neck but before i could it moved abruptly on its own and the pain(it didn't hurt that much) woke me up and scared me , because i hadn't try to move it.
Namaste & thank you for such an insightful video. I’m curious regarding each waves in each phase in that. Is each wave completely consistent from the beginning to end in each of the phases N1, N2, N3 & REM in an EEG or do they increase at the beginning of each and decrease towards the end of each phase? Kind regards
It's mostly based on movement, but some watches with heart rate monitors also can use heart rate info to help determine what stage you are in. The idea with movement is that, as you move from lighter stages of sleep to deeper stages, you will move less and less. Studies have found this can often overestimate or underestimate the amount of time you spend in each stage--or even the time you spend asleep altogether, although other studies have found it to be relatively accurate (see www.ncbi.nlm.nih.gov/pmc/articles/PMC4531414/). Adding heart rate it can help give a clearer picture.
Quick question. Does that mean that if I wake up, say, 45 minutes before my alarm goes off, that it really wouldn't make a difference if I went to sleep again vs just getting up right then and there? Since I won't get even remotely close to REM in those 45 minutes. Is this a correct way or seeing it or can I still get some useful rest with those 45 minutes? Thank you very much.
It depends on why you wake up. If you wake up because your body had enough sleep then I recommend getting up and enjoying the 45 extra minutes. If you go back to sleep you risk beeing forcefully awoken in a deeper sleep stage. If you however wake up from a noise or something and feel groggy some extra rest might be usefull. Please consider that i am in no way an expert. Was just reading and watching a little bit about the general topic.
I have an accurate heart rate and O 2 level monitor to wear when I sleep. How can I estimate my sleep quality using this data? Can you give me an estimate of what happens to my heart rate and O2 level as I move less and less and go into deeper stages of sleep? Thank you for this great video!
Unfortunately, I don't know enough detail off the top of my head to tell you how to use heart rate variability & O2 to differentiate between sleep stages. Sorry! There is definitely research out there on this, though.
What about people who jump almost directly to REM sleep. I went to a sleep clinic 20 years ago and I was in REM within 5 minutes each time they flipped off the lights. Back then the docs didn't bother to explain much, I don't even think I was supposed to know what the tech told me.
The time from falling asleep until you enter REM sleep is known as REM sleep latency. A short REM sleep latency can be associated with any number of things, ranging from drug withdrawal to depression. But it also just might be that you have a slightly unusual pattern to your sleep cycles.
@@neurochallenged yeah, ha, I went in because I was tired ALL the time. But I wasn't feeling depressed. They told me I was depressed and put me on antidepressants that did nothing for me.
Hi, a little late to the party but I have a question that I can't seem to find the answer for: why would an EEG read that there was stage 2 sleep architecture with sleep spindles and k complexes on a patient that is fully conscious?
Yes. Everyone is slightly different, but on average REM periods occur every 90-120 minutes. The amount of time we spend in REM increases over the course of the night (i.e. each REM period is longer than the one before it). In a full night, we might spend around 20-25% of the night in REM sleep. Sorry this is paywalled, but here is a source for this info: www.ncbi.nlm.nih.gov/pubmed/7403740
Is everyone who is watching this and able to understand adults cuz o found adults,aged people and neurologists in comments i feel special as a 10th grader 🗿
Have you ever tried using a sleep tracker (e.g. an app on your phone or watch)? They aren't completely accurate when assessing sleep stages, but it might help to give you a better overall idea of what's going on over the course of a night. An even better option would be to talk to a doctor. If they couldn't determine the issue, they could refer you to have a sleep study done. For this you would sleep in a lab and they can monitor your sleep to find out more definitively what's happening.
Kelly K.did you manage to understand the reason for constant{rem} dreaming during the night I am constantly tired and my brain never seems to shut down? thank you
Sleep isn't usually split up into 4 stages + REM anymore. Stage 3 and 4 were very similar, and are now typically combined into one stage (stage 3). Groups like the American Academy of Sleep Medicine consider sleep to consist of stages 1, 2, 3, and REM sleep.
I’ve got conflicting info, my college professor says that slow wave sleep occurs in stage 2. Is that correct? Or is it like how in the video he says slow wave sleep occurs in stage 3?
Slow waves do occur in stage 2, but they are less prevalent in stage 2 and they are predominant in stage 3. This is why stage 3 is often referred to as "slow-wave sleep."
I have a question. So not to long ago I had a seizure and had to get an EEG. When I was getting the EEG done the lady kept saying I was asleep and told me to wake up when I was very clearly awake. I even had my eyes open at one point and was looking around. Could you possibly know why?
No, it's really difficult for me to say without having all of the details. If I were you, I would ask a medical professional who has access to your EEG data.
I got a question does everyone go through all the sleep stages? Can you just go to like stage 2 or not reach rem sleep? Say if someones a light sleeper as they call it.
yes, everyone goes through all sleep stages, even the elderly however they have less REM. If you did not have REM sleep, you would acquire serious sleep debt and get very tired and foggy. being a "light sleeper" doesn't mean you don't have REM, it just means you might wake up from it easier :)
Sleep isn't usually split up into 4 stages + REM anymore. Stage 3 and 4 were very similar, and are now typically combined into one stage (stage 3). Groups like the American Academy of Sleep Medicine consider sleep to consist of stages 1, 2, 3, and REM sleep.
I don't think anyone knows for sure. The first paper that mentioned K-complexes (Loomis et al., 1938) didn't explain the name. Some have suggested it comes from the first letter of the word "knock" because Loomis et al. were able elicit the waveform by making sounds like knocking on the door while someone was sleeping, but I don't believe there's much evidence to support that idea. www.ncbi.nlm.nih.gov/pubmed/26606317
Sleep isn't usually split up into 4 stages + REM anymore. Stage 3 and 4 were very similar, and are now typically combined into one stage (stage 3). Groups like the American Academy of Sleep Medicine consider sleep to consist of stages 1, 2, 3, and REM sleep.
Neuroscientifically Challenged oh alright thank you! In my textbook, it is still divided into 4+ REM, which is why I was a bit confused. Great channel :)
Neuroscientifically Challenged oh alright thank you! In my textbook, it is still divided into 4+ REM, which is why I was a bit confused. Great channel :)
Sleep isn't usually split up into 4 stages + REM anymore. Stage 3 and 4 were very similar, and are now typically combined into one stage (stage 3). Groups like the American Academy of Sleep Medicine consider sleep to consist of stages 1, 2, 3, and REM sleep.
I wanted to add a comment to address a common question I get about this video: Although many sources may still refer to sleep as consisting of 4 stages + REM, this approach to sleep staging isn't typically used anymore. Stage 3 and 4 were very similar, and are now usually combined into one stage (stage 3). Groups like the American Academy of Sleep Medicine, for example, consider sleep to consist of stages 1, 2, 3, and REM sleep.
كككككككككككككمككمكككككمككككمككككمككككمكككككمكككككمككككككككككككككككككككككككككككك
ككككككممكككممكمكككككككككككمكككككمكككككمكككككمكككككمكككككمككككككككككككككككمككككمككككككككمكككككمكككككممككككككمكمككمكككك
كممكككككمكككككمكككككمكككككمكككككمككككممكمكككمككككمكككككككككككككمككككمممكككككككمكمككك
كككمككمككك
كممكككمكككمككككم
everybody gangsta until You wake up in REM stage
💀😂😂😂😂
Literally just happened to me. It’s 2am
Pls tell me what happens
Sleep paralysis
I think I have a problem, I have sleep paralysis almost every night or morning, it's so weird cause I heard people see things but luckily for me I don't see any demons lol, just paralyzed for a minute or so. I can se my surroundings very well and move my eyes, but that's it.
Your videos are helping me understand so much of the content from my physiological psychology course. Thank you so much for making these videos. Let's hope I pass my exam in 3 days.
Good luck!
I'm writing an essay on sleep but I am staying up all night to do so :D
ruclips.net/video/7131NOPJYZU/видео.html
You could've done it before. Don't waste your sleep on stuff like that.
Good for you! I'll sleep when I'm long gone. 🙋🏼♀️
@@anuragsosa tell that to my teachers 😭
Just copy the homework from your bro z
This explains a lot, and reminds me I'm not the only one waking up for bathroom breaks throughout the night. :)
You are doing great.After watching your channel work .I decided to start making animation realted to drug studies in future.
ruclips.net/video/7131NOPJYZU/видео.html
thanks for not being convoluted and keeping my attention.. concise and informative, awesome.. thank you
This hellped me refresh before my brpt exam
Thanks. My students have asked a question related to sleep. And you have helped me. Thanks
Nicely explained! 💯
Thankuuu ...today I wrote answer of sleep cycle in my university exam by just writing contents from ur vid...
Thank you so much. You are an excellent teacher. This was very helpful.
I'm Gonna Use This To My Advantage At Sleepover Pranks >:)
this is so interesting! agree?
Great video. Helpful. I'm doing research for a comic book I'm working on and I was looking for a description of brain wave activity during sleep. Thanks!
Appreciate this video 🙏🏽
Excellent video.
This piece is a landmark; akin to a book that was a landmark in its genre. "Better Sleep Better Life" by Author Name
Just now watched the video. Thanks for the simplified explanation. I am a mom of 2 beautiful daughters. One baby is 6 months old and the elder one is 1.5 yrs old. I have not slept a continuous 4 hrs sleep in last 1.5 years. I just wonder will this effect my health anyway. Once I make formula and feed one baby and make her sleep the other one will wake up. Then once I make the first one sleep and I lie down for sleeping I do not fall asleep, I try a lot to initiate sleep and once I reach into sleep either one will wake up and cry... Can you please tell me will this affect my health? How can I get a quality sleep?
Thanks in advance
I work 5 nights a week, and have done for about 12 years. I use (vape) cannabis to help me sleep a solid 6-8 hours everyday, despite temperature and noise levels. I just got a fitbit which tracks my sleep cycles, and suddenly I'm obsessed with the data it produces and am watching all videos on sleep cycles to try to see if mine is normal. I'd always assumed that cannabis mostly kept me in deep sleep, but it turns out I spend most of the day in light sleep, with seemingly random (and short) periods of deep and REM sleep. Sometimes I feel refreshed when I wake up, and sometimes I don't. I never remember any dreams, but that might just be a short-term memory issue.
The effects of cannabis on sleep are still not clearly understood. Some have suggested it might be helpful for sleep in the short-term, others have found that it might have a negative impact on sleep quality even if it helps someone stay asleep for the night (see link.springer.com/article/10.1007%2Fs11920-017-0775-9). So ideally, you'd find a way to sleep without relying on it. But at the same time, be careful of relying too much on your fitbit to tell you exactly what's going on in your sleep. Some studies have found sleep tracking devices to not be accurate enough to differentiate between sleep stages. I don't know what kind of fitbit you have, but here's a study that looked at fitbits specifically and found they had some inaccuracies in measuring relatively simple things like total sleep time: www.ncbi.nlm.nih.gov/pmc/articles/PMC4507738/. Measuring stages is even more complicated...
@@neurochallenged Thanks for the info, will take a look. Ideally I'd like to be able to sleep without cannabis, but we don't really have air con in the uk, and I have to sleep in 30+ celcius in the summer. I can't close my window, so my neighbours kids having a water fight in the garden can clearly be heard. I don't know how I could be expected to sleep well without some sort of hypnotic, and I've convinced myself that cannabis is the least harmful. I might have more of a chance in the winter, I should probably try.
I have a fitbit charge 3 which has a heart rate monitor, but I realise its accuracy hasn't really been proven, at least not to me. It does seem to do a good job of detecting when I fall asleep and wake up though. I honestly don't know how it would tell between light and deep sleep without reading my brainwaves though, I think I'm a fairly still sleeper. I guess REM sleep causes a rise in heart rate.
@@FriedEgg101 It's mostly using changes in heart rate to differentiate between those stages: blog.fitbit.com/heart-rate-during-sleep-stages/ But you're probably a better judge of whether or not you had a good night's sleep than a sleep-tracking device is.
FriedEgg try reishi mushroom extract powder and lionsmane mushroom extract powder. Best sleep ever.
I tried moving my head when sleeping cause that time i was aware that i was sleeping, but didn't and then thought of moving my neck but before i could it moved abruptly on its own and the pain(it didn't hurt that much) woke me up and scared me , because i hadn't try to move it.
Outstanding
Awesome man. Keep it up! :D
ruclips.net/video/7131NOPJYZU/видео.html
"I teach neuroscience in two minutes or less"
**The length of the video being **1:59****
This man really kept his word
Thank you sir 🙏❤️
Thanks !!!
I would love 1 good night sleep!!
OMG. YOUR VIDEO IS SO AMAZING! Thank you endlessly! 😊😊 20/3/2019
Namaste & thank you for such an insightful video.
I’m curious regarding each waves in each phase in that. Is each wave completely consistent from the beginning to end in each of the phases N1, N2, N3 & REM in an EEG or do they increase at the beginning of each and decrease towards the end of each phase?
Kind regards
thank you!
Thanks.
So, how can a smartwatch detect sleep quality?
It's mostly based on movement, but some watches with heart rate monitors also can use heart rate info to help determine what stage you are in. The idea with movement is that, as you move from lighter stages of sleep to deeper stages, you will move less and less. Studies have found this can often overestimate or underestimate the amount of time you spend in each stage--or even the time you spend asleep altogether, although other studies have found it to be relatively accurate (see www.ncbi.nlm.nih.gov/pmc/articles/PMC4531414/). Adding heart rate it can help give a clearer picture.
Nice video..hmmmm looks like my experiment will work after all🙂
Quick question. Does that mean that if I wake up, say, 45 minutes before my alarm goes off, that it really wouldn't make a difference if I went to sleep again vs just getting up right then and there?
Since I won't get even remotely close to REM in those 45 minutes. Is this a correct way or seeing it or can I still get some useful rest with those 45 minutes?
Thank you very much.
x2, also curious about this
It depends on why you wake up. If you wake up because your body had enough sleep then I recommend getting up and enjoying the 45 extra minutes. If you go back to sleep you risk beeing forcefully awoken in a deeper sleep stage. If you however wake up from a noise or something and feel groggy some extra rest might be usefull.
Please consider that i am in no way an expert. Was just reading and watching a little bit about the general topic.
I have an accurate heart rate and O 2 level monitor to wear when I sleep. How can I estimate my sleep quality using this data? Can you give me an estimate of what happens to my heart rate and O2 level as I move less and less and go into deeper stages of sleep? Thank you for this great video!
Unfortunately, I don't know enough detail off the top of my head to tell you how to use heart rate variability & O2 to differentiate between sleep stages. Sorry! There is definitely research out there on this, though.
What about people who jump almost directly to REM sleep. I went to a sleep clinic 20 years ago and I was in REM within 5 minutes each time they flipped off the lights. Back then the docs didn't bother to explain much, I don't even think I was supposed to know what the tech told me.
The time from falling asleep until you enter REM sleep is known as REM sleep latency. A short REM sleep latency can be associated with any number of things, ranging from drug withdrawal to depression. But it also just might be that you have a slightly unusual pattern to your sleep cycles.
@@neurochallenged yeah, ha, I went in because I was tired ALL the time. But I wasn't feeling depressed. They told me I was depressed and put me on antidepressants that did nothing for me.
@@drivethrupoet That's interesting. I imagine the short REM latency had something to do with them thinking you were depressed.
It's a symptom of Narcolepsy also some birth control causes some females to have less slow wave sleep and more REM sleep
Hi, a little late to the party but I have a question that I can't seem to find the answer for: why would an EEG read that there was stage 2 sleep architecture with sleep spindles and k complexes on a patient that is fully conscious?
Does rem have cycles too and what is the duration for its cycles?
Yes. Everyone is slightly different, but on average REM periods occur every 90-120 minutes. The amount of time we spend in REM increases over the course of the night (i.e. each REM period is longer than the one before it). In a full night, we might spend around 20-25% of the night in REM sleep. Sorry this is paywalled, but here is a source for this info: www.ncbi.nlm.nih.gov/pubmed/7403740
Cool! Thx soo much for taking the time:)
Hi, could I use one of your videos for my dissertation project, I'm doing an experiment?
Instanding
I have seen dreams that's meaning I was in deep sleep 😊
Is everyone who is watching this and able to understand adults cuz o found adults,aged people and neurologists in comments i feel special as a 10th grader 🗿
I feel like im constantly in stage one or REM is this possible, I awake so fatigued every morning. It's burning me out.
Have you ever tried using a sleep tracker (e.g. an app on your phone or watch)? They aren't completely accurate when assessing sleep stages, but it might help to give you a better overall idea of what's going on over the course of a night. An even better option would be to talk to a doctor. If they couldn't determine the issue, they could refer you to have a sleep study done. For this you would sleep in a lab and they can monitor your sleep to find out more definitively what's happening.
Kelly K.did you manage to understand the reason for constant{rem} dreaming during the night I am constantly tired and my brain never seems to shut down? thank you
Apparently it's Sleep apnoea which is causing my crappy sleeps.
how to interpret EEG signal to sleep stages using programming? any library to do this?
I thoughts there was stage 4 similar to stage 3?
Sleep isn't usually split up into 4 stages + REM anymore. Stage 3 and 4 were very similar, and are now typically combined into one stage (stage 3). Groups like the American Academy of Sleep Medicine consider sleep to consist of stages 1, 2, 3, and REM sleep.
Okay thanks, the video was very helpful for my recent examine, and expanded about stage 3 and 4 being similar.
Additionally thank you for the video on the suprachiasmatic nucleus
that's a sub
I’ve got conflicting info, my college professor says that slow wave sleep occurs in stage 2. Is that correct? Or is it like how in the video he says slow wave sleep occurs in stage 3?
Slow waves do occur in stage 2, but they are less prevalent in stage 2 and they are predominant in stage 3. This is why stage 3 is often referred to as "slow-wave sleep."
@@neurochallenged thank you! :)
I couldn't sleep trying to process all this information
I should probably sleep right now.
Please have Thai subtitles 🥺🥺
I have a question. So not to long ago I had a seizure and had to get an EEG. When I was getting the EEG done the lady kept saying I was asleep and told me to wake up when I was very clearly awake. I even had my eyes open at one point and was looking around. Could you possibly know why?
No, it's really difficult for me to say without having all of the details. If I were you, I would ask a medical professional who has access to your EEG data.
@@neurochallenged Alright thanks for the response
I got a question does everyone go through all the sleep stages? Can you just go to like stage 2 or not reach rem sleep? Say if someones a light sleeper as they call it.
yes, everyone goes through all sleep stages, even the elderly however they have less REM. If you did not have REM sleep, you would acquire serious sleep debt and get very tired and foggy. being a "light sleeper" doesn't mean you don't have REM, it just means you might wake up from it easier :)
After three hours I suddenly get up with bad dreams .
It's good bro but what is the conclusion of this
whats the most imporstant sleeping stage? and does alcohol and marijuana impact them equally?
what about stage 4?
Sleep isn't usually split up into 4 stages + REM anymore. Stage 3 and 4 were very similar, and are now typically combined into one stage (stage 3). Groups like the American Academy of Sleep Medicine consider sleep to consist of stages 1, 2, 3, and REM sleep.
In K complexes
What is "k"
Tell me any one
I don't think anyone knows for sure. The first paper that mentioned K-complexes (Loomis et al., 1938) didn't explain the name. Some have suggested it comes from the first letter of the word "knock" because Loomis et al. were able elicit the waveform by making sounds like knocking on the door while someone was sleeping, but I don't believe there's much evidence to support that idea.
www.ncbi.nlm.nih.gov/pubmed/26606317
@@neurochallenged Thanq..
Wait a minute? 90-110 minutes? Is that variation linked to age groups or what?
Dang no dislikes
this is the hardest biology u can find
What about stage 4??
Sleep isn't usually split up into 4 stages + REM anymore. Stage 3 and 4 were very similar, and are now typically combined into one stage (stage 3). Groups like the American Academy of Sleep Medicine consider sleep to consist of stages 1, 2, 3, and REM sleep.
Neuroscientifically Challenged oh alright thank you! In my textbook, it is still divided into 4+ REM, which is why I was a bit confused. Great channel :)
Neuroscientifically Challenged oh alright thank you! In my textbook, it is still divided into 4+ REM, which is why I was a bit confused. Great channel :)
Stage 4???
Sleep isn't usually split up into 4 stages + REM anymore. Stage 3 and 4 were very similar, and are now typically combined into one stage (stage 3). Groups like the American Academy of Sleep Medicine consider sleep to consist of stages 1, 2, 3, and REM sleep.
i came here because i slept for 2 hrs and it felt like i slept for 19 hrs
and NREM stage 4?
your marker is black but red ink is coming out.
hmm so slipping more than 4and a have hauers~ at a time is useless
Sir is video ko Hindi me banae
Its only 3 stages now dude. Not 4.
It is now considered 3 stages + REM. It used to be commonly broken up into 4 stages + REM.