Sleep stages and circadian rhythms | Processing the Environment | MCAT | Khan Academy
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- čas přidán 26. 02. 2014
- Created by Carole Yue.
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Is it just me or is her voice very pleasing to listen to?
I can listen to her all day.
Same here!
It's ok. Little crispy at times, but not too bad.
You have a very pleasant voice to listen to
Sounds like Amanda Seyfried..
Raoul den braber sameee
@@skyzone1631 No she doesnt fuck you
creep lol
Simp
Wow, no sound-effects or disturbing background muzak. Just plain good information from start to end! Thumbs up!
I was beginning to think I was the only person who finds the background "muzak" distracting for these types of videos. Now I feel better...
I gotta get up at 6 am. Been doing it for 12 years. Now, when I wanna sleep in, like the video says, my eyes snap open at 6 every day. At least I never miss the bus.
one of the best lectures on sleep that Ive seen. thank you for posting!
You are a life saver. I am preparing for BCPP and this exact video saved my sleep wake disorders section. Thanks and extremely appreciated.
Experienced first 3 stages while watching this video
I could listen to her all day
OMG. YOUR VIDEO IS SO AMAZING! Thank you endlessly! 😊😊 20/3/2019
Awesome explanation. Thank you so much. 👏
Thank you so much! I was struggling to understand the stages. You just made my day! Just like that I got it!!!!!!
she is amazing with hand writing and voice and demonstration
Very helpful , thank you
its actually alpha and theta waves not just simply theta waves in stage 1 NREM :)
+sarhs one that' true
Though might be true, your correction is quite insignificant in its impact given the type of substance in the video and the level of scientific sophistication of the viewers. In an hour, I guarantee you all the thetas and alphas mentioned in this video will be gone and probably just the gist of the concepts will remain with us non experts. And that's not an insult to you or an attempt to be condescending.
sarhs one no it's only theta waves,,Alpha waves are when you just close your eyes when you are still awake.
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@@KhaledTheSaudiHawkII I do not agree, speak for yourself and not for all others. For example, it is very important for me the details , I check for an exam, so this detail was very important...
Thank you so much !!!!
Your voice makes me sleepy 🤤
Thank you 🎉❤
Very useful
Thank u
Thanks a lot❤
Great session I greatly appreciate so
Very understanding
thanks :)
Beautiful
great explaination
Thank you tons for the lesson!
NICE review session
Very nice video
Has anyone read the light book: how natural and artificial light affect our mood, health and behavior? It has some good sections on sleep.
you have a very nice voice
6:45 More specifically Blue Light, like that found in electronic screens at high intensities. Children need high quality sleep which means lower consumption of blue light four hours before sleep.
Parents who are unaware of this and how use electronic devices as a distract mechanism for their children are severely damaging their ability to process information gathered during the day.
Also, educational endeavors should be done before sleep rather than after waking. Sleep is extremely efficient at organizing and integrating ideas collected during waking hours, and creativity is more potent in the hours after waking.
thank you, this really helped me :)
Most easiest explanation, another all video have made me puzzled.thanks Mam.
Wow thank you
THANK YOU :D
During N1 I've gotten "exploding head syndrome" many times too lol, freaks me out every time
This video really helped because it actually sent me into the 3 stages of sleep
Also, the reason why people sometimes don't remember their dreams, is because they awaken between cycles. Everybody dreams, not everybody remembers.
Khan Academy!
Damn that’s crazy
so when you wake up in the middle of the night are u in N1 or can you wake up in any cycle? ( if I wake up and then instantly start thinking/over thinking, ((bc of anxiety))
if i'm not wrong also take note in that stage 1 produce Alpha and Theta waves not just Theta, Stage 2 however is just Theta.
In N1 theres a vertex and theta waves. Alpha happenes during wake or arousal.
+Margie Galino
I read that stage one involves alpha and theta, because alpha is already there from being relaxed and theta is there because it is the transitional period between awake and sleep. Then it is totally theta and total sleep at stage two.
I though total wake and arousal is beta?
Stage 1 only has Theta waves. I'm reading it on my First Aid for USMLE Step 1 book. Also mentions it on Wikipedia :p.
Stage 2 only has what Khan Academy mentioned: sleep spindles and potassium complexes.
Alright. That's wrong data.
The Textbook of Medical Physiology by Guyton and Hall (pretty much a bible) states that Stage 1 has low voltage alpha spindle bursts and not theta waves.
Stage 2 and 3 rather has theta waves being produced.
You are right.
It's a 6 year old video.
It may have been thought to be true at that time.
@@peekeyeseek I agree so dude chill
It's okay. It's 6 years old video. The basic gist she explained about the different stages was still pretty good though. Even Guyton and Ganong updates their texts with time and new findings. Appreciate her efforts and don't nit pick coz she did do a good job.
Nicely done :-)
Please correct me if I'm wrong. Did you say that K complex helps with memory consolidation?
My book says that sleep spindles are the ones that help with memory consolidation. who is wrong? or if none is, can you please explain why the book says one thing and you say something different? Thank you and great job on explaining.
Super good. Loved this video!
fuck you
@@47grapes16 lmao
can't believe i watched without skipping, didnt even search for it
REM is a misnomer in that the eyes do not actually move rapidly. They move slower than when you are awake and don’t have to move whatsoever.
What does the brain release to paralyze the body for sleep? It's fairly easy to trigger this while fully awake.
thank you for fantatic video!
spelling you fucking idiot
I kept dozing off while trying to listen to this all the way through
Talking about you're "k complex" theory I do have dreams that are now in my long term memory as a fact that's forsure.
I can fall asleep only when I am tired, and it can be anytime during the night,...quite often it it is at different times, so I do not live up to a circadian rhythm, I am completely fine with it.
Hi! What did u use to draw this out?
Excellent video and thanks for giving visual explanations !
how do u writ so good with a mouse? u r the god of writing with a mouse. I have never seen anyone write so pretty with a mous how u do it? thx
yztyzt1 she uses an actual mouse
i have paper tommorow and its very high yield
no one cares
Interesting. My son sleep walks. Plus 6 and half years ago my boyfriend would wake in the night and try force himself on me. It was scary because he felt so strong. But thing is he never remember doing it
Interesting sometimes i would wake up at night and be super horny and have sex with my girlfriend really rough when she was asleep but it was like i was in a sensual trance and didn't think logically. She was info stuff like that though so she never did mind
What should you do when you wake up in the middle of REM sleep...?
I'm miserable cuz can't even get myself in an standing position...
Is it possible to be conscious in the first stages?
what type of waves are present during REM sleep?
so hypothetically, If I were to want to know what stage someone is in, so I could perhaps, leave without them noticing, how would I.
Shame this doesnt have stereo in and still no idea if the poly pitcher has improved?
Every time I have woken up (voluntarily or suddenly due to external stimuli), I have just been dreaming. This has been the case throughout my life. Does that mean I don't get really deep, restorative/regenerative sleep? Can one get really good, restorative sleep while dreaming? Thank you.
thrivesurvive Waking up after a REM cycle is normal.
Its been 2 years now since my ex left me. 8 years together. 2 kids. I still have dreams about her and us getting back together in these weird houses where some rooms are familiar and some no clue. Dreams are messed. Even more crappy is when i wake up after them dreams i remeber em and basically wake up sad and i guess depressed cause the dream is rushing through. I have woken up crying before. I rember this one dream that was requiring every so often..it was when i was kid but the dream was i would be in a bathtube. But not a bathtub but imagine being in a bathtube chained up and then u shrink and now ur staring up at the edges of the bathtube and its dark..
Free sleeper for years.
Does going to bed late effect height even if I get enough quality sleep 8 hours?
You are very conscious during sleep.. to be unconscious basically is to be in a coma or dead.
or at least that's what I've been taught in my psychology class.
Yayee P. Stage 4 of sleep is the closest thing to coma. Basically coma is a strong stage 4. Usually the majority of people during sleep reach stage 3 maximum and rarely stage 4 or if so only for little time
Trying to draw a T-block or a J-block?
Is REM sleep deeper sleep than N3
Depending on what type of dreams u hv lol
So it's beta waves during REM sleep, yes?
that voice though
“Very much dead to the world”
why does my samsung watch record it as awake, rem, light and then deep.. so annoying !! im not getting anywhere near enough of the rem and deep stages, is making my life very difficult... am trying to find out how to fix it willing to do all cept cut out technology close to bedtime lol
If you say that our body is paralyzed, then how on earth do we breathe ? Is it possible that only parts of our body are paralyzed? Just wondering. Wud love if someone have the explanations:)
Our voluntary part of the body is paralyzed, but never is the involuntary aspect of the human body i.e the autonomous nervous system which self regulates breathing, heartbeats etc. Without putting conscious biological effort on our part; even in sleep.
You ever wondered who's controlling your breathing and heart pattern when you're not thinking about it? There you go.
There are permanently paralyzed people who are still breathing 🙄
Why muscles paralyse during rem sleep?
Dr Dwaitha Would be easier to answer which muscles don’t. Seems like the eyes can move but everything else is in atonia, but sometimes you’ll see leg movements or talking.
I keep going Straight to R.E.M. Sleep
I skip all other stages of sleep.. I have vivid dreams and sleep paralysis even in naps
nice name, and do you sleep during night? as only in night does n3 occur
Ok no one cares about your fucking sleep cycle enoch.
Pov:you have to watch this cause of school
Where´s alpha and beta waves ?
Where is stage four?
Stage four isn't included in the newer AASM scoring manuals, it's just N1, N2, N3, and REM now. I think the main reasoning was that stage 4 wasn't functionally different enough and couldn't be as consistently distinguished from the adjacent stages.
Melatonin?
actually 4 hormones involved in this process:norepinephrine, Ach,prolactin & melatonin.
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Axel Blaze
I'm on a boat!!!!!!!! T-PAIN! at 1:15
Your boat is fucking garbage.
You may be content with any sleep you can get, but your face does not smile during that time.
a lot of wrong information 😩
Which stage has beta waves?
REM sleep
u too much!
Interesting topic, but it is a strain to listen to this video because of the constant "up-talking". See: www.psychologytoday.com/blog/caveman-logic/201010/the-uptalk-epidemic for a good explanation. This bad habit is not just with young women anymore; men are doing it too.
I hope my comment is taken as intended, which is to help produce better learning experience by speaking smoothly allowing the listener to focus on the information, not on the speaker.
Myiphone5 There was no attack whatever, and besides not reading my comment, you obviously you didn't read my link. So, if you don't like my comment, "that is personal and you should keep it to yourself and move on." Sheesh, grow up, would you?
Myiphone5 What on Earth is your problem?
Your voice is like a bunch of howling raccoons who are all drowning in a river while listening to one of Jake Paul's raps in distorted agony.
47 grapes can you please piss off because I literally keep seeing you being a rude idiot to people, and if you want, give a dumb reply, but I’m not having it, thanks
your demonstration with graphs sucks! REM sleep produces stage one which is mostly around beta and alpha so basically (same brain wave when someone is also in an awake stage but is in deep sleep/dream) None-REM stage consists of beta and alpha so when enter into REM it produces same brain waves. so it goes non rem beta, alpha , theta, delta and back to (beta) Rem. This consists of repetition of 5 cycles a night maybe consisting of longer beta(Rem) periods every cycle until awake.
Very basic, not really all that helpful
totally agree roshan
If you learned how to do animations, not over board just more visuals for understanding… like a cartoon skit, but simple and informative like this original, would add more detail and depth… and views! )