Discover the phenomenon known as asymmetrical sleep, where parts of an animal's brain are asleep while other areas remain active.
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Many animals need sleep. But all of the threats and demands animals face don’t just go away when it’s time to doze. That’s why a range of birds, mammals, and even humans experience some degree of asymmetrical sleep, where parts of the brain are asleep and other areas are more active. So, how does it work? Masako Tamaki explores how animals' brains remain vigilant even at their most vulnerable.
Lesson by Masako Tamaki, directed by Biljana Labović.
Animated by Iva Ćirić, designed by Manja Ćirić.
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View full lesson: https://ed.ted.com/lessons/can-you-be-awake-and-asleep-at-the-same-time-masako-tamaki
Dig deeper with additional resources: https://ed.ted.com/lessons/can-you-be-awake-and-asleep-at-the-same-time-masako-tamaki#digdeeper
Animator's website: https://ivaciric.com/
Designer's website: https://www.behance.net/manjaciric
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@FinancialShinanigan3 years agoMe: time for bed brain: let' s replay that embarrassing moment from your childhood. 3436
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@faarez_official3 years agoCan you be awake and asleep at the same time? *schrdinger: hold my cat*. 1146
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@sun-san10003 years agoCan you be awake and asleep at the same time? me during class lecture: uhm. 1977
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@sahanaramachandran40073 years agoThe animation- chef' s kiss the narrator' s voice- chef' s kiss the content- chef' s kiss the video- chef' s kiss. 639
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@rajamouryasimhareddy14783 years agoCan you please make a video on maladaptive daydreaming, or daydreaming in general. 1800
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@rociogallegossanchez31473 years agoI guess this is what happens when you' re a deep sleeper, but when you know you have to wake up early for something very important the next morning,. ...Expand1201
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@deepasrivastava8633 years ago" Frigatebirds suggest a great tolerance for sleep deprivation" Never knew that you knew me personally Ted-ed. 262
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@frogg83193 years agoCan you be awake and asleep at the same time? short answer: sleep paralysis long answer: *. 388
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@rushilpatel74183 years agoCan we appreciate the staggeringly amazing job the animators did on this one? like who can even imagine a walnut falling from the tree symbolising the brain! somebody call robert langdon. 557
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@nitrogenjutsu51783 years agoTed-ed: humans are more vigilante when asleep in new environments me, a deep sleeper: ok but like that doesn' t change the fact that you can still kill me in my sleep. 248
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@katrinkasanfranciscobayare73643 years agoThis video is right on so many levels. after having two in-home invasions and always having the fear of my daughter getting injured, i found that now that my daughter is away at college and i' m i' m now sleeping a lot. i honestly feel like i' m making up for lost time. ...Expand86
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@emilnavod673 years agoI' m both asleep and awake during classes, so yeah we do asymmetric sleeping. 509
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@tonybaston34193 years agoThis gives a whole new meaning to the phrase " sleep with one eye open" 88
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@puddincup98793 years agoI learned more about animals sleeping than humans bit of a let down, but very informative! 34
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@jengomez61153 years agoThis is probably the explanation behind my experience before. Years ago, i spent most of my lunch breaks taking naps. Nothing unusual, right? However,. ...Expand24
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@Sabarok3 years agoI' ve always considered myself a light sleeper and easy to wake. One thing i always found strange was how often i would wake up a few minutes before i think that counts as being awake and asleep at the same time. ...Expand69
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@fiend-off-the-grid3 years agoAnother way humans can sleep with one part of their brain more active than the rest is in lucid dreaming, during which they are aware of the fact that they are dreaming and can actively interact with its elements. 44
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@johnhaaland742 years agoI lived 50 yrs. With little sleep. I wondered why i never dreamed. I had other problems too and at one point i couldn' t walk. i went to a concert then i was diagnosed with fybromyalgia and my life began at that point. With medication, i have finally begun to dream and feel rested. I' m not in constant pain for the first time and life is more bearable. It' s amazing what sleep can do. ...Expand3
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@EvarDion3 years agoFascinating. This explains why i find it easier to go back to sleep when i get out of bed with only one eye open. I didn' t realize that to so many other animals did this too. 15
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@GraveUypo3 years agoI hate when i' m almost falling in deep sleep, then something comes into my mind and i go " no, noo! Don' t think about it, don' t think about real life! " and i think about it and tada! Fully awake. 23
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@chanbricks44613 years agoWhere i live, we call being half awake and asleepor. This is due to the fact that your head bops up and down trying to stay awake but your too tired for calculus at 8. 00am in the morning. 70
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@educatech84503 years agoTed-ed is the best channel. It clarifies so many doubts of mine from childhood. 2
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@cabanaho3 years agoMy brain did this after i had a baby. It wouldn' t let me fall fully asleep and i was always in a state of high alert. If baby cried or whimpered, or . ...Expand6
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@luuchoo933 years agoIm in love with this video, and ted ed. What an amazing subject. 2
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@dynamosaurusimperious27183 years agoWell this sure was a very nice ted-ed as always. also i wish y' all a good restful day. 3
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@NullNoxproduction3 years agoIts always something new to learn from this channel and it is always enjoyable. 3
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@lisacantacuzene-sb6ih3 months agoI dont know when i last laughed so hard. You folks are so funny! Thanks so much, i needed that:
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@SuperBlessedKing3 years agoSuch an incredible video. very informative and insightful. 1
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@ericyao34793 years agook but that walnut transition at was just super clean 2
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@larsmunch45363 years agoI clearly remember one night many years ago. I was in my bed, neither awake nor sleeping. I was thinking about this very tall animal with long legs and. ...Expand6
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@peterjeffery84953 months agoProductivity type: in my work career i traveled from home frequently. During this time i had an unbreakable habit of always staying in marriott properties.. ...Expand
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@dariarut19433 years agoThis is the best channel i have ever found on youtube tbh, forget about tiktok.
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@novicewarrior89452 years agoThank you, this really clarified this problem i was having recently to a degree.
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@bratwurstmitbiryani3 years agoHaha i always though of walnut as a brain and when i looked it up it indeed is good for the brain. I felt so satisfied when they animated it like that. Thanks teded. 21
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@MemeSwag3 years agoYes, sometimes when i' m super sleepy i close my eyes and see dream like images while being able to move and control them, a sudo-sleep if you will. 5
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@Templemain3 years agoThe best memory reinforcement is to take images of every thing. All my travels, special occasions & family pix. I have about 1. 5 terabytes of photos,. ...Expand
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@haidershah35543 years agoMaashaaallah for your enticing research and alhamdulilah for mindblowing body. 1
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@shreejanabaidya83863 years agoTed ed making me smarter. I appreciate that. Thank you teddy! 2
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@evank37183 years agoI really like the quotes at the beginning of every video. 1
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@dessieboba59833 years agoSo, While your hotel room is obviously not trying to eat you XD there's always a funny part in these TED-Ed videos keep it up guys. 5
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@danielcuevas58993 years agoWhen i was a child sleeping & dreaming in my room my mom would barge in to wake me for school. At times she would just start talking to me while i. ...Expand5
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@Sakshi_172033 years agoI love your videos lots of love from india please make videos on buddha and krishna. 1
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@chengyiq30663 years agoIts past midnight here in malaysia. I should be sleeping but i rather learn about being both awake & asleep. 38
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@katiedyck54073 years agoI create elaborate stories in my head and usually continue them at night. Normally its the same story with a little variation. There have been times w i hate when it happens because then i wake in the night and night feels very long and tiresome. ...Expand15
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@tammyle55283 years agoIm scared of the ocean and honestly really appreciate the simple and cute art beginning if video. 1
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@yourtsar8243 years agoHavent watched the video yet but no my brain never shuts off what else keeps me awake at night? 89
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@zaiikim013 years agoThis video choosed to be on my homepage when i' m dealing with this weird thing currently. Whenever i wake up in the early morning, i think to myself,. ...Expand
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@Sakshi_172033 years agoPlease make a video on mahabharata. It' s really inspiring. 4
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@dyannatodd22703 years agoThis narrator has the loveliest voice.
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@uriargaman72413 years agoI used to consciously keep one eye partially open while sleeping during scouts tours. Helped me discourage kids plotting to prank me on several occasions. ...Expand1
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@tellmethesongoftherain65343 years agoI was once awake and asleep at the same time. I could see my room but i was having a dream at the same time! And i literally remember shouted " no" during the dream. 1
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@NathonDalton2 years agoActually used to experience this half asleep, half awake issue a lot. I had a sleep study done and was surprised to hear that i slept fine since i was. ...Expand1
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@ellehasling34563 months agoI fell asleep behind the wheel once. I was completely awake, tired as i had been traveling the day before, but leading up to it i remember thinking about. ...Expand
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@careless32414 months agoI live on the streets and i' m used to sleeping with one eye open, luckily i have a good doggo to help delegate the roles of keeping an eye out for our saftey. 1
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@DasSchokoeis3 years agoI would love to see a video about lucid dreaming to that specific topic. How does the brain work when you' re lucid dreaming? Is it still as restful as normal sleep? 6
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@tsarnicholasii4193 years agoCan you be awake and asleep at the same time? dr strange while strangling his opponent' s soul: yes. 45
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@keep3 years agoWatching this around 1am and i' m like ' heck yeah' 2
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@abhakumari9272 years agoNeed a video on humans' sleep types. Like when do we have a deep sleep, when a sleep that makes us feeland when a sleep with recurring dreams because i have had all of these.
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@redcrowcrow39293 years agoTed ed you should also start putting the next video link in description for people who download offline videos. That next video pop up is not available for offline downloaders. 2
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@jethancheta8733 years agoNow i can explain to others why i keep one of my eye closed while watching, heck of a trick to multi-task. 1
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@thanhlongnguyen65753 years agoWhen you are at meditation and focus on the breath. There is no significant and substantial movement around your body. In this posture, it seems that we. ...Expand
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@n1kk1cathar1ne3 years agoDaniel love aka the lucid guide sent me here! 2
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@josephjoestar9533 years agoI think i may have done this before but i can' t actually tell, but the fact that brain activity from left and right portions of the brain can differ. ...Expand
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@seventhskysky6983 years agoPls one video on waking up disoriented, sleep paralysis and sleep apnea specially in postpartum period.
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@techinthehouse3 years agoCould this explain how we' re sometimes able to fall asleep on lectures and still hear everything that is being said? 3
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@saltynuts5965last yearI remember at age 4 when i experienced my first daydream i would dose off on a memory and forget i was staring at the window and i found that very outstanding and would want to experience it again.
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@lizs79753 years agoI feel like it could be worth having series for people that are familiar with psychology where they can get into more technical terms and depth instead of it being quite comprehensive.
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@joshoshea31942 years agoI have hyper realistic dreams when this happens to me. I' m also able to wake myself up at any moment. This usually occurs if i haven' t slept in several days which is roughly once every six weeks. 2
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@porkvince20703 years agoIve experienced this phenomenon, i heard my parents talk and it felt like a dream, i know its real and im conscious, i held my sleeping self but after a few seconds i couldn' t hold it and woke up.
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@sofiamunoz98763 years agoI feel like what most people mean when they say that they have been " awake and asleep" at the same time is that they were sleeping, but weren' t . ...Expand
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@adamchook833 years agoInteresting stuff, got recommended this from the lucid dream portal channel.
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@SaffrinianOfficial3 years agoCool research! ( i was sent by lucid dream portal) 2
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@wendytube0073 years agoExperience version of this the other night when i tried a new recipe for a 12 hour slow cook lamb roast. Put it in the oven at 12 and by 3 oclock i s id="hidden40"tarted smelling it woke me out of a deep sleep and then the rest of the night i was intermittently smelling it all night long consequently a terrible night sleep concluded that my brain was on alert and not fully a sleep. ...Expand
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@Yaksha_3 years agoThere' s a thing that once happened to me. I woke up after a nap in the afternoon. I wanted to go to the bathroom, but forgot where the bathroom was,. ...Expand1
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@jonah16633 years agoAppreciate the efforts of the whole team of ted-ed. You made our lockdown interesting. 9
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@ZapherjeetZaiphy2 years agoYes i can i do it am awake, listening to surrounding & imagining my stories & i' m asleep at same time. Not watching or moving. 1
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@coolking30303 years agoI am just wondering how does it feel like to fall asleep at some part of the world and to wake up at other, miles away from where you felt asleep. 1
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@sebytro2 years agoThis video makes me think i have asymmetrical sleep when i lie on my back. On the other hand, when i sleep on my belly i have the deepest most relaxing sleep ever.
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@Echo81Rumple836 months agoThere are times i wish i were awake while sleeping, because i can hardly believe that i did sleep at all on some nights when my adhd brain refuses to switch and this is why i' m afraid of anesthesia altogether: it' s right up there with total blackout from getting drunk or given amnesia pills of some sort, and not remember anything between all of that freaks me out. ...Expand
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@CarlosAM15 months agoI sometimes feel like i experience this. It' s hard to describe, like you dream, you know you are dreaming, but don' t know enough for it to be a . ...Expand
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@whoscatimi75903 years agoI keep continuing my dreams after i wake up for a few seconds or maybe im just hallucinating. 6
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@Yoyomeyo3 years agoThose birds needed sleep but they also needed to fly for 10 days non-stop so they decided, #39; friggit we' ll do both' 3
Related videos for Can you be awake and asleep at the same time - Masako Tamaki:
brain: let' s replay that embarrassing moment from your childhood. 3436
*schrdinger: hold my cat*. 1146
me during class lecture: uhm. 1977
the narrator' s voice- chef' s kiss
the content- chef' s kiss
the video- chef' s kiss. 639
Never knew that you knew me personally Ted-ed. 262
short answer: sleep paralysis
long answer: *. 388
like who can even imagine a walnut falling from the tree symbolising the brain!
somebody call robert langdon. 557
me, a deep sleeper: ok but like that doesn' t change the fact that you can still kill me in my sleep. 248
after having two in-home invasions and always having the fear of my daughter getting injured, i found that now that my daughter is away at college and i' m
i' m now sleeping a lot.
i honestly feel like i' m making up for lost time. ...Expand 86
i went to a concert then i was diagnosed with fybromyalgia and my life began at that point. With medication, i have finally begun to dream and feel rested. I' m not in constant pain for the first time and life is more bearable. It' s amazing what sleep can do. ...Expand 3
also i wish y' all a good restful day. 3
very informative and insightful. 1
lots of love from india
please make videos on buddha and krishna. 1
dr strange while strangling his opponent' s soul: yes. 45
( i was sent by lucid dream portal) 2
i do it
am awake, listening to surrounding & imagining my stories & i' m asleep at same time. Not watching or moving. 1