Sleep stages and circadian rhythms | Processing the Environment | MCAT | Khan Academy

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  • เผยแพร่เมื่อ 12 พ.ย. 2024

ความคิดเห็น • 164

  • @jidilcilanor
    @jidilcilanor 8 ปีที่แล้ว +164

    Is it just me or is her voice very pleasing to listen to?
    I can listen to her all day.

  • @DamonMacready
    @DamonMacready 4 ปีที่แล้ว +69

    Wow, no sound-effects or disturbing background muzak. Just plain good information from start to end! Thumbs up!

    • @jonahansen
      @jonahansen ปีที่แล้ว

      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...

  • @Azabael
    @Azabael 8 ปีที่แล้ว +351

    You have a very pleasant voice to listen to

    • @skyzone1631
      @skyzone1631 6 ปีที่แล้ว

      Sounds like Amanda Seyfried..

    • @IK-fg4gw
      @IK-fg4gw 6 ปีที่แล้ว

      Raoul den braber sameee

    • @47grapes16
      @47grapes16 6 ปีที่แล้ว +2

      @@skyzone1631 No she doesnt fuck you

    • @tommy11sixorozco9
      @tommy11sixorozco9 5 ปีที่แล้ว +9

      creep lol

    • @christoala6817
      @christoala6817 4 ปีที่แล้ว +6

      Simp

  • @khaledhusain6532
    @khaledhusain6532 3 ปีที่แล้ว +10

    You are a life saver. I am preparing for BCPP and this exact video saved my sleep wake disorders section. Thanks and extremely appreciated.

  • @animeart9705
    @animeart9705 3 ปีที่แล้ว +23

    one of the best lectures on sleep that Ive seen. thank you for posting!

  • @redacted3557
    @redacted3557 5 ปีที่แล้ว +29

    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.

  • @ashishtorq
    @ashishtorq 4 ปีที่แล้ว +15

    Experienced first 3 stages while watching this video

  • @mrkdoubleo
    @mrkdoubleo 5 ปีที่แล้ว +2

    I could listen to her all day

  • @mattyblake9427
    @mattyblake9427 2 ปีที่แล้ว

    she is amazing with hand writing and voice and demonstration

  • @mominerr
    @mominerr 16 วันที่ผ่านมา

    so informative! thank you

  • @vikramsrinivasan8176
    @vikramsrinivasan8176 4 ปีที่แล้ว +4

    Awesome explanation. Thank you so much. 👏

  • @Garyganeu
    @Garyganeu 13 วันที่ผ่านมา

    The best simple explained

  • @josephcoon5809
    @josephcoon5809 ปีที่แล้ว +3

    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.

  • @kingrobert7246
    @kingrobert7246 5 ปีที่แล้ว +19

    Your voice makes me sleepy 🤤

  • @HafizahHoshni
    @HafizahHoshni 5 ปีที่แล้ว +4

    OMG. YOUR VIDEO IS SO AMAZING! Thank you endlessly! 😊😊 20/3/2019

  • @sarhsone7240
    @sarhsone7240 9 ปีที่แล้ว +79

    its actually alpha and theta waves not just simply theta waves in stage 1 NREM :)

    • @gonikabhatia1988
      @gonikabhatia1988 9 ปีที่แล้ว +2

      +sarhs one that' true

    • @KhaledTheSaudiHawkII
      @KhaledTheSaudiHawkII 8 ปีที่แล้ว +16

      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.

    • @allaweeallaweeallawee
      @allaweeallaweeallawee 8 ปีที่แล้ว +5

      sarhs one no it's only theta waves,,Alpha waves are when you just close your eyes when you are still awake.

    • @joshuamcsween1744
      @joshuamcsween1744 7 ปีที่แล้ว

      Neew Reeeseearch: “Outsmaart Insoomnia” Cureeee => twitter.com/bb83123a4e0d62d94/status/822777083591999489

    • @PsicologaLx
      @PsicologaLx 5 ปีที่แล้ว +6

      @@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...

  • @TheDano1947
    @TheDano1947 7 ปีที่แล้ว +19

    Also, the reason why people sometimes don't remember their dreams, is because they awaken between cycles. Everybody dreams, not everybody remembers.

  • @befo-hg5vj
    @befo-hg5vj 4 ปีที่แล้ว +3

    This video really helped because it actually sent me into the 3 stages of sleep

  • @dr.orderz557
    @dr.orderz557 ปีที่แล้ว

    Thank you 🎉❤

  • @dr.orderz557
    @dr.orderz557 3 ปีที่แล้ว

    Thank you so much !!!!

  • @nandinisharma2613
    @nandinisharma2613 ปีที่แล้ว

    great explaination

  • @Jayongchy
    @Jayongchy 10 ปีที่แล้ว +7

    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.

    • @mbar9522
      @mbar9522 9 ปีที่แล้ว +1

      In N1 theres a vertex and theta waves. Alpha happenes during wake or arousal.

    • @malteeaser101
      @malteeaser101 9 ปีที่แล้ว +1

      +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?

    • @lisagonzalez2902
      @lisagonzalez2902 7 ปีที่แล้ว

      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.

  • @Resident100-g3q
    @Resident100-g3q ปีที่แล้ว

    Thanks a lot❤

  • @psychoscienceformentalheal4601
    @psychoscienceformentalheal4601 4 ปีที่แล้ว

    Very understanding

  • @noeditbookreviews
    @noeditbookreviews 5 ปีที่แล้ว +5

    Has anyone read the light book: how natural and artificial light affect our mood, health and behavior? It has some good sections on sleep.

  • @nathanielcolesjr3493
    @nathanielcolesjr3493 ปีที่แล้ว

    Great session I greatly appreciate so

  • @rudysantos3978
    @rudysantos3978 7 ปีที่แล้ว +1

    Thank you tons for the lesson!

  • @marialombardi8912
    @marialombardi8912 2 ปีที่แล้ว

    Beautiful

  • @lauraparthemer
    @lauraparthemer 5 ปีที่แล้ว +2

    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.

  • @lycheemyusic
    @lycheemyusic 2 ปีที่แล้ว +1

    During N1 I've gotten "exploding head syndrome" many times too lol, freaks me out every time

  • @gevenaowl1574
    @gevenaowl1574 4 ปีที่แล้ว

    NICE review session

  • @lisagonzalez2902
    @lisagonzalez2902 7 ปีที่แล้ว +3

    Super good. Loved this video!

  • @thetaylorholt
    @thetaylorholt 4 ปีที่แล้ว

    Khan Academy!

  • @emilylauren4388
    @emilylauren4388 5 ปีที่แล้ว +5

    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))

  • @haidernoor5483
    @haidernoor5483 5 ปีที่แล้ว

    Very useful
    Thank u

  • @hazyhalfmoon
    @hazyhalfmoon 6 ปีที่แล้ว

    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.

  • @joejoyce8031
    @joejoyce8031 6 ปีที่แล้ว +2

    you have a very nice voice

  • @kabeerulislam4379
    @kabeerulislam4379 7 ปีที่แล้ว

    Most easiest explanation, another all video have made me puzzled.thanks Mam.

  • @unorthodoccc
    @unorthodoccc 5 ปีที่แล้ว

    Very nice video

  • @biswaroopjoarder8135
    @biswaroopjoarder8135 5 ปีที่แล้ว +20

    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.

    • @agnesnenkama9254
      @agnesnenkama9254 4 ปีที่แล้ว +4

      You are right.

    • @peekeyeseek
      @peekeyeseek 4 ปีที่แล้ว +7

      It's a 6 year old video.
      It may have been thought to be true at that time.

    • @carnatic6205
      @carnatic6205 4 ปีที่แล้ว +1

      @@peekeyeseek I agree so dude chill

    • @devashishgole4722
      @devashishgole4722 4 ปีที่แล้ว +3

      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.

  • @SophieSophieW123
    @SophieSophieW123 10 ปีที่แล้ว +1

    thank you, this really helped me :)

  • @glaze8855
    @glaze8855 4 ปีที่แล้ว

    can't believe i watched without skipping, didnt even search for it

  • @diya3895
    @diya3895 หลายเดือนก่อน

    Can PPG signal use to identify sleep disorders

  • @rosearriana6519
    @rosearriana6519 5 ปีที่แล้ว +4

    Damn that’s crazy

  • @ChristianMansour-ul2iz
    @ChristianMansour-ul2iz 7 หลายเดือนก่อน

    what type of waves are present during REM sleep?

  • @shanighias
    @shanighias 7 ปีที่แล้ว +1

    i have paper tommorow and its very high yield

    • @47grapes16
      @47grapes16 6 ปีที่แล้ว

      no one cares

  • @noeditbookreviews
    @noeditbookreviews 5 ปีที่แล้ว +1

    What does the brain release to paralyze the body for sleep? It's fairly easy to trigger this while fully awake.

  • @yztyzt1
    @yztyzt1 10 ปีที่แล้ว +12

    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

    • @ajacobs100
      @ajacobs100 6 ปีที่แล้ว +3

      yztyzt1 she uses an actual mouse

  • @HafizahHoshni
    @HafizahHoshni 8 ปีที่แล้ว

    THANK YOU :D

  • @boimesa8190
    @boimesa8190 7 หลายเดือนก่อน

    Shame this doesnt have stereo in and still no idea if the poly pitcher has improved?

  • @KuntreeGurl79
    @KuntreeGurl79 7 ปีที่แล้ว +1

    Excellent video and thanks for giving visual explanations !

  • @accountantas
    @accountantas 7 ปีที่แล้ว

    thank you for fantatic video!

    • @47grapes16
      @47grapes16 6 ปีที่แล้ว

      spelling you fucking idiot

  • @joshuaetarukot6184
    @joshuaetarukot6184 4 ปีที่แล้ว

    Is it possible to be conscious in the first stages?

  • @hijodesumatter
    @hijodesumatter 9 ปีที่แล้ว

    Wow thank you

  • @6ixside816
    @6ixside816 6 ปีที่แล้ว +1

    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.

  • @sandofme93
    @sandofme93 5 ปีที่แล้ว

    thanks :)

  • @reubensingh1430
    @reubensingh1430 ปีที่แล้ว

    Does going to bed late effect height even if I get enough quality sleep 8 hours?

  • @diksha_1067
    @diksha_1067 26 วันที่ผ่านมา

    Is it known as sleep.wake cycle?

  • @thetaylorholt
    @thetaylorholt 4 ปีที่แล้ว

    Free sleeper for years.

  • @MelvinTrambleJr
    @MelvinTrambleJr 4 ปีที่แล้ว

    I kept dozing off while trying to listen to this all the way through

  • @aadilrasheed2984
    @aadilrasheed2984 ปีที่แล้ว

    Is REM sleep deeper sleep than N3

  • @estelledali2211
    @estelledali2211 7 ปีที่แล้ว

    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.

  • @cpf4me
    @cpf4me 4 ปีที่แล้ว

    Trying to draw a T-block or a J-block?

  • @rachelwalton813
    @rachelwalton813 7 ปีที่แล้ว

    Nicely done :-)

  • @boimesa8190
    @boimesa8190 4 ปีที่แล้ว

    Hi! What did u use to draw this out?

  • @ThatOneWeirdChannell
    @ThatOneWeirdChannell 4 ปีที่แล้ว

    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..

  • @katweaver3275
    @katweaver3275 ปีที่แล้ว

    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

  • @thrivesurvive
    @thrivesurvive 9 ปีที่แล้ว

    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.

    • @hazyhalfmoon
      @hazyhalfmoon 6 ปีที่แล้ว

      thrivesurvive Waking up after a REM cycle is normal.

  • @samcurtis1984
    @samcurtis1984 7 ปีที่แล้ว

    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

    • @chriswillhite5260
      @chriswillhite5260 6 ปีที่แล้ว

      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

  • @science-y9209
    @science-y9209 4 ปีที่แล้ว

    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...

  • @dangerwolf8348
    @dangerwolf8348 4 ปีที่แล้ว +1

    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.

  • @528hrtz
    @528hrtz 7 ปีที่แล้ว

    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

    • @abd4620
      @abd4620 7 ปีที่แล้ว

      nice name, and do you sleep during night? as only in night does n3 occur

    • @47grapes16
      @47grapes16 6 ปีที่แล้ว

      Ok no one cares about your fucking sleep cycle enoch.

  • @haylee7951
    @haylee7951 7 ปีที่แล้ว

    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.

    • @joeypinco
      @joeypinco 7 ปีที่แล้ว

      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

  • @akbhnajwa3084
    @akbhnajwa3084 5 ปีที่แล้ว +1

    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:)

    • @SynKronik
      @SynKronik 5 ปีที่แล้ว +1

      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.

    • @creativechristiancontent
      @creativechristiancontent 5 ปีที่แล้ว

      There are permanently paralyzed people who are still breathing 🙄

  • @Andreah-m8d
    @Andreah-m8d 16 วันที่ผ่านมา

    🎉🎉🎉

  • @gowthamgunaseelan3062
    @gowthamgunaseelan3062 5 ปีที่แล้ว +6

    Depending on what type of dreams u hv lol

  • @dwaithasivadas2421
    @dwaithasivadas2421 6 ปีที่แล้ว +1

    Why muscles paralyse during rem sleep?

    • @hazyhalfmoon
      @hazyhalfmoon 6 ปีที่แล้ว

      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.

  • @redboyamaji8581
    @redboyamaji8581 ปีที่แล้ว +1

    Pov:you have to watch this cause of school

  • @rebeccaday5347
    @rebeccaday5347 4 ปีที่แล้ว +4

    “Very much dead to the world”

  • @lilianlanderos8140
    @lilianlanderos8140 4 ปีที่แล้ว

    Where is stage four?

    • @LordoftheStrings109
      @LordoftheStrings109 3 ปีที่แล้ว

      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.

  • @Medinalegend
    @Medinalegend 5 ปีที่แล้ว +2

    a lot of wrong information 😩

  • @MaxPommer-h6d
    @MaxPommer-h6d 6 หลายเดือนก่อน

    You may be content with any sleep you can get, but your face does not smile during that time.

  • @me0only
    @me0only 5 ปีที่แล้ว

    that voice though

  • @circleinfinite
    @circleinfinite 8 ปีที่แล้ว +2

    Melatonin?

    • @allaweeallaweeallawee
      @allaweeallaweeallawee 8 ปีที่แล้ว +2

      actually 4 hormones involved in this process:norepinephrine, Ach,prolactin & melatonin.

    • @axelblaze738
      @axelblaze738 8 ปีที่แล้ว

      Охford Univеrsitу Revеаls: Quick Insоmniа Curе => twitter.com/49069ceaf70725527/status/804614583075733505 Slеер stаgеs and сirсаdiаn rhуthms Рrоосeеssing thе EЕЕЕnvirоnment МCАT Кhаn Аcаdemу

    • @harrchhetri235
      @harrchhetri235 7 ปีที่แล้ว

      Axel Blaze

  • @DmSujaEntrepren
    @DmSujaEntrepren 7 ปีที่แล้ว

    I'm on a boat!!!!!!!! T-PAIN! at 1:15

    • @47grapes16
      @47grapes16 6 ปีที่แล้ว

      Your boat is fucking garbage.

  • @DihelsonMendonca
    @DihelsonMendonca 5 ปีที่แล้ว

    Where´s alpha and beta waves ?

  • @raspberry765
    @raspberry765 6 ปีที่แล้ว

    Which stage has beta waves?

  • @Holly-days
    @Holly-days 10 ปีที่แล้ว +5

    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.

    • @Holly-days
      @Holly-days 8 ปีที่แล้ว +4

      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?

    • @Holly-days
      @Holly-days 8 ปีที่แล้ว +2

      Myiphone5 What on Earth is your problem?

  • @chideraokolie222
    @chideraokolie222 6 ปีที่แล้ว

    u too much!

  • @naqaarose275
    @naqaarose275 6 ปีที่แล้ว

    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.

  • @47grapes16
    @47grapes16 6 ปีที่แล้ว +1

    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.

    • @niceuser1237
      @niceuser1237 5 ปีที่แล้ว +1

      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

  • @OnTheGoKRO
    @OnTheGoKRO ปีที่แล้ว

    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! )

  • @rosh6369
    @rosh6369 7 ปีที่แล้ว

    Very basic, not really all that helpful

    • @47grapes16
      @47grapes16 6 ปีที่แล้ว

      totally agree roshan

  • @AmitisL
    @AmitisL 3 ปีที่แล้ว

    Very helpful , thank you