9 Groundbreaking Discoveries About Sleep

  • Опубликовано: 5 фев 2017
  • There's a lot about sleep that we don't understand, like why we even sleep in the first place, for example. Here are some amazing discoveries biologists have made while trying to solve the mystery of sleep.
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    Brain activity
    Brain centers
    Blue light
  • Длительность: 10:35
  • SciShow  science  Hank  Green  education  learn  sleep  fatal familial insomnia  insomnia  thalamus  human body  health  memory  brain  rem  eeg  brain wave  constantin von economo  brain stem  hypothalamus  sleep science  biology  narcolepsy  chronic pain  fibromyalgia  sleep deprivation  blue light  wavelength  melatonin  light  astrocytes  spinal fluid  medicine  alzheimers  

Комментарии: 1 597

  • Frans The skeleman
    Frans The skeleman 4 дня назад

    🎶The Science Show!🎶
    *Piano drops on guy*
    Guy: Who’s idea was this?!

  • Bissan Obaid
    Bissan Obaid 8 дней назад

    Can we actually trick our brain?it IS our brain basically telling itself to tricl itself. Placebos also work when the one using them doesnt know theyre placebos.
    Great videos

  • Nico Angelo Bado
    Nico Angelo Bado 8 дней назад

    Casing point, it's almost 9pm now. Time to get to bed.

  • Hewi Kiwi
    Hewi Kiwi 12 дней назад

    Poor rats

  • mumblernumber
    mumblernumber 16 дней назад

    Who the hell burned rats?

  • moh
    moh 17 дней назад +1

    Im in love with science

  • Tolliver
    Tolliver 17 дней назад

    I know this is an old video but the study on sleep deprivation in rats is given as an example in some of my classes as a biased study. The rats were kept awake by keeping them on a pedestal with a spinning wall on it, surrounded by water. If they fell asleep the slow moving wall would knock them into the water, so they would wake up or drown. They could have died of stress, not of sleep deprivation. It doesn't mean that insomnia can cause death, because the rats weren't awake due to insomnia, but forced awake.

  • skyler anderson
    skyler anderson 19 дней назад

    When I'm depriving myself of sleep watching this vid

  • Evi1M4chine
    Evi1M4chine 21 день назад +1

    *COULD YOU PLEASE FUCKIN BREATHE BETWEEN SENTENCES,* and give us time to take up the information?? You talk without a single fuckin pause! Whoever cuts these videos, need to be cut too!! _With a spoon!_ Why a spoon? Because it hurts more!

  • Evi1M4chine
    Evi1M4chine 21 день назад +1

    *Genetic disorders are not ”incurable“ anymore!*
    ”incurable“ is arrogant god-complex doctor speak anyway. You mean ”1.
    we 2. do not know, how to cure it 3. yet!“. As opposed to ”never ever in all of the universe forever!“

  • Sabeer V
    Sabeer V 24 дня назад

    *How sleep differs from death?*
    Sleep is a minor death. During sleep only soul is departing from the body and life is not departing as explained in the verses 6: 60 and 39: 42, while in death the Rooh containing soul + life is departing. One has the soul only when the remembrance of Lord is maintained with Adhikr. Those who don’t testify Adhikr and don’t propagate It to others after receiving are in the state of sleeping. That is they have only life without soul. This is the reason for saying that the hypocrites who knowingly hide Adhikr are killed as told in the verses 2:99; 63: 4 and 80: 17.

  • V Morrissey
    V Morrissey 24 дня назад


  • ikill GHOSTundDEMONSinMYsleep
    ikill GHOSTundDEMONSinMYsleep 25 дней назад

    I thought sleeping shortens it like
    I learned math and stuff the next morning I forget all those equations for my advanced classes

  • ikill GHOSTundDEMONSinMYsleep
    ikill GHOSTundDEMONSinMYsleep 25 дней назад

    If u tape the eyes of a FFI sufferers
    Make an sleep? Idk

  • Jeffrey Salvador
    Jeffrey Salvador 26 дней назад

    Who else is here because they can't sleep....btw thanks for the answer "blue light" I should probably put my phone away

  • Delimbiyra ღ
    Delimbiyra ღ 26 дней назад

    I oversleep all the time, what could this mean?

  • Squeekuto Uzumaki
    Squeekuto Uzumaki 27 дней назад

    I get sick (more specifically have a glandular fever relapse) when I don't get enough sleep😩

  • Jai Lec
    Jai Lec 28 дней назад

    Stop harming rats please...
    It makes me feel sad...

  • Steven Nesfeder
    Steven Nesfeder 29 дней назад

    what i took from this video: not sleeping will make you lose weight

  • Loshi
    Loshi Месяц назад +1

    can anyone give me some examples of apps that remove blue light :)

  • xXTas4LifeXx
    xXTas4LifeXx Месяц назад

    i have insomnia sooo..... XD

  • G Blake
    G Blake Месяц назад

    Awful and disgusting that was done to such sweet, intelligent and innocent animals. Humans are so often just a swollen boil on the earth. I am ashamed of my species.

  • funmod gaming
    funmod gaming Месяц назад

    ignore the fact that its 5am im voluntarily awake cause im not tired not cause of blue light just to be clear

  • funmod gaming
    funmod gaming Месяц назад

    cant sleep now cause of the blue background thanks a lot dork

  • Eric Scott
    Eric Scott Месяц назад

    Very fascinating! And now, I am going to go to sleep. Good night!

  • Black Iron Seamus
    Black Iron Seamus Месяц назад

    Warning jumpscare at 5:58

  • jasmine acosta
    jasmine acosta Месяц назад

    Hank !! 😀

  • Saad Ansari
    Saad Ansari Месяц назад

    I had got habit of sleeping @ 12-1 am a few months ago but now I sleep mostly around 11 pm and most lately 11.30.

  • Saad Ansari
    Saad Ansari Месяц назад

    SLEEP AT 11 WAKE AT 7... BEST!!! Atleast for me... during sundays...
    Other days: 10.30-6.30

  • Earthium
    Earthium Месяц назад

    Sweet dreams are made of memes, who had a mind to disagree.

  • apostle333
    apostle333 Месяц назад

    I wonder if there's a connection here. I always have this experience I call "the big small" It feels like I'm both galactic and atomic at the same time. It prevent me from sleeping when it gets out of control. I wonder if there is a connection there?

  • ElephantHut
    ElephantHut Месяц назад

    I feel bad for the rats :(

  • pranay forever
    pranay forever Месяц назад

    Blah blah blah... too much talking

  • MarschStudios
    MarschStudios Месяц назад

    Thanks for making these phenomenal videos. I've read an article or two suggesting that in past eras (Medieval, etc) humans had "two sleeps:" they went to sleep with the sun, woke in the middle of the night and went about their business, and then slept again until sunrise. Could you research this and make a video?

  • Keilani Kekoa
    Keilani Kekoa Месяц назад

    Watching this in bed before sleep

  • Kat!668 Japan!668
    Kat!668 Japan!668 Месяц назад

    I have severe insomnia. When im not in a sport i get about two to four hours of sleep per day and once a week i would get no sleep. When i am in a sport i oversleep. I get ten to twelve hours of sleep per night. . .

  • Intex Cloud S9
    Intex Cloud S9 Месяц назад

    exit light enter night...off to never never land

  • Sixtine
    Sixtine Месяц назад

    Poor rats.

  • Derek Knight
    Derek Knight 2 месяца назад

    What a trip! CSF cleaning the brain in dishwasher mode. Thanks for the video!

  • TCGBattling Master
    TCGBattling Master 2 месяца назад

    i listen to these to fall asleep

  • Rafael Eleutério
    Rafael Eleutério 2 месяца назад

    ok, sleep deprivation can kill you, but... what about excess sleeping? What happens to your body when you force it to sleep more than it needs?

  • J.A. Wolf
    J.A. Wolf 2 месяца назад

    WTF. Did the rats volunteer to be painfully shocked and burned in the name of human-centric science?

  • DaveTheWave
    DaveTheWave 2 месяца назад +1

    Watching videos helps me fall asleep it doesn’t prevent me from falling asleep

  • Sam Stevenson
    Sam Stevenson 2 месяца назад

    Not sleeping to watch this video

  • JustyFied
    JustyFied 2 месяца назад

    Just me or does the doctor at 4:20 look high?

  • adecree
    adecree 2 месяца назад

    Did they really have to burn the rats?..

  • d bush
    d bush 2 месяца назад

    There was no mention of what happens when you sleep too much. Maybe another video for that topic?

  • Jolie Giacomo
    Jolie Giacomo 2 месяца назад

    Can you cry in your sleep? I've recently gone through heartbreak. Daytime I listen to nothing funny things & stay busy. However when I woke up my face was swollen as if I had been bawling all night. No food allergies.

  • L1QU1D AC1D
    L1QU1D AC1D 2 месяца назад

    HEY! I know why we go to sleeps!

    We get tired

  • MyBubbleInSpace
    MyBubbleInSpace 2 месяца назад

    Could you make a video on narcolepsy? And hopefully on the potential studies for a cure? I've had it since I had the vaccination against swine flu in 2009 and would really appreciate it. Love your channels!

  • llarry2769
    llarry2769 2 месяца назад

    thinking of how many rats had to die is going to keep me awake at nights

  • William Calhoun
    William Calhoun 2 месяца назад

    Quit the unnecessary sadistic animal experiments. Did we really need to know that so badly that we had to torture something to find it out?

  • Lightningmonky 7
    Lightningmonky 7 2 месяца назад

    We sleep because we're tired, DUH

  • another one
    another one 2 месяца назад

    "I never sleep cause sleep is the cousin of death"

  • Raul Salcedo
    Raul Salcedo 2 месяца назад

    The ground still remains

  • Michael Meissner
    Michael Meissner 3 месяца назад

    Number 7 is why I use Gunnars

  • cheeseman
    cheeseman 3 месяца назад

    This is one of the videos I was watching while procrastinating going to sleep.

  • FrostedMantis
    FrostedMantis 3 месяца назад

    Who's watching this vid in bed

    Also, who's tired?

  • Wendy Aston
    Wendy Aston 3 месяца назад

    I am going to sleep 😴 10:00 pm

    TWNST LBC2 3 месяца назад

    6:45 how did the rats get burn wounds tf

  • allie paterson
    allie paterson 3 месяца назад

    I hardly sleep but when i do it is uncomfortable and i have nightmares sometimes to lol.

  • tobechukwu anyanwu
    tobechukwu anyanwu 3 месяца назад

    Couldn't help thinking about all those sleep deprived rats subjected to shock after shock ( ._.)

  • tobechukwu anyanwu
    tobechukwu anyanwu 3 месяца назад

    Watching this on a smartphone at 1:32 am ( ._.)

  • Thomas Cummings
    Thomas Cummings 3 месяца назад

    At 0.5 speed he sounds drunk

  • vadadiud ines
    vadadiud ines 3 месяца назад

    We sleep bc were tired

  • chrisgosselin92
    chrisgosselin92 3 месяца назад

    Kinda just breezed over the sleep affecting burn healing, based on an experiment on rats. Damn that almost seems unethical.

  • Isaac Wedige
    Isaac Wedige 3 месяца назад

    He said sleep so many times it doesnt sound like a work anymore

  • Alvin Lofton
    Alvin Lofton 3 месяца назад

    They have them rats hell

  • João Vieira
    João Vieira 3 месяца назад

    Poor rats...

  • Arron Bell
    Arron Bell 3 месяца назад

    Poor rats, had a tough time in the 70s

  • Crystal Majestica
    Crystal Majestica 3 месяца назад

    The blue light thing...
    So if you look at images of Sonic the hedgehog or Mega Man on your phone, they would disrupt your sleep?

  • Courtney lovell
    Courtney lovell 3 месяца назад

    Can the show do a video on: "The importance/use/purpose of [the] tags on clothing"- Courtney L.

  • Jordan Levitt
    Jordan Levitt 3 месяца назад

    4:21 you know, for a doctor who has aided research on sleep, he really doesn't look like hes had much of it.

  • Original Precursor
    Original Precursor 3 месяца назад

    WTF are these horrifying people doing to these poor rats. I mean....good god.

  • Andre Le Roux
    Andre Le Roux 4 месяца назад

    Why do a lot of kids grind their teeth in their sleep?

  • novocras
    novocras 4 месяца назад

    How does sleep play into depression? I've read articles about how too much sleep can lead to an early death. But if depression is an illness how does that play out.

  • ??? %
    ??? % 4 месяца назад

    What about the guy who lost the ability to sleep,but was wayyy more efficient at doing things?

  • LegendaryHarpSeal52
    LegendaryHarpSeal52 4 месяца назад

    This is click bait, when I heard these discoveries, the ground beneath me didn't break, I'm so pissed 😡 this click bait is wrong. Stop the click bait.

  • Mikayla Eckel Cifrese
    Mikayla Eckel Cifrese 4 месяца назад

    Can medication help people with that type of insomnia?

  • Bob Bobson
    Bob Bobson 4 месяца назад

    It would be nice if the word "believe" could be replaced by "think". For instance "that discovery led scientists to think that sleep is..."

  • Rock Balancer
    Rock Balancer 4 месяца назад

    number 7 he says with that background.... with my screen on max... in the dark... i should go to sleep

  • Cindy Durán
    Cindy Durán 5 месяцев назад +1

    Poor rats 🐭.

  • Melissa Corzo
    Melissa Corzo 5 месяцев назад

    my favorite activity is sleeping

  • Yash Agarwal
    Yash Agarwal 5 месяцев назад

    my braining is learning about it self.....thug life😎😎😎

  • D.E.B. B
    D.E.B. B 5 месяцев назад

    Perhaps the biggest myth, is that you're unconscious when you're asleep. Not so; you're just in a different state of consciousness. You will respond to a crying baby, phone, an itch, pain, alarms, someone trying to break into your house, etc..

  • M
    M 5 месяцев назад

    "Rats had a harder time healing burn wounds" I wonder how did they tested that poor fellas

  • shorea27
    shorea27 5 месяцев назад

    Oh man, poor rats.

  • Salvator Merrifield
    Salvator Merrifield 5 месяцев назад

    why is that spot below his throat censored?

  • Till Schwenke
    Till Schwenke 5 месяцев назад

    talking without pauses is kinda difficult to listen to

  • kit ten
    kit ten 5 месяцев назад

    if this whole video is about sleep, why didnt you guys talk about too much sleep?

  • Issac Lumbard
    Issac Lumbard 5 месяцев назад

    What about sleeping too much?

  • WWZenaDo
    WWZenaDo 5 месяцев назад

    Ancient humans couldn't get much sleep - plagued by parasites & biting insects, uncomfortable nests or sleeping on branches, having to keep one eye open for tree-climbing predators (like leopards, pumas, snakes, etc.) - all of those survival issues meant they couldn't get a good night's sleep very often. Even cave dwellers had to deal with bugs, snakes, scorpions, etc.

  • WWZenaDo
    WWZenaDo 5 месяцев назад

    Oh, poor little rats...

  • cass c
    cass c 5 месяцев назад

    why have scientists been burning rats?? 😔

  • Mario Capistran
    Mario Capistran 6 месяцев назад

    nothing groundbeaking here

  • CindyMzLuciLulu
    CindyMzLuciLulu 6 месяцев назад

    Is too much sleep bad for you?

  • Reymart Abude
    Reymart Abude 6 месяцев назад

    I want to record my dream while im having a wet dream

  • kittcat223
    kittcat223 6 месяцев назад

    I thought when I was a sleep my sole would. leave my body. -_- .?dose that really happen

  • kittcat223
    kittcat223 6 месяцев назад

    I thought when I was a sleep my sole would. leave my body. -_- .?dose that really happen

  • Ryan Lundgren
    Ryan Lundgren 6 месяцев назад

    I fell asleep to this and i have ridiculous insomnia. hahah