Sleep Stages, Sleep Cycle, and the Biology of Sleep

In this video, Dr. Kushner examines the science of sleep, including sleep stages (N1, N2, N3, REM) and sleep cycle.
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Corrections:
➡️3:20: "Suprachiasmatic nucleus" is off screen
➡️9:15: I should have stated "Electroencephalogram"

[@PsychExplained]

Related video:
REM sleep: ua-cam.com/video/U4-6bQXoOkA/v-deo.htmlsi=TejcgaR74WRRLtu8

[@mikepeng1568]

This is the best sleep stage/sleep cycle explanation on UA-cam.

[@PsychExplained]

Thank you for watching! Glad I could help :)

[@Ag_paul]

I totally agree 🎉

[@JIRKA_Praha]

TOP NOTCH, no doubt 👏👏👏

[@qrstuvwx]

Thank you, answers everything!

[@kgs501]

This might just be the best usage of a whiteboard for a presentation, that I have ever seen

[@PsychExplained]

Thank you for the kind words!

[@sabaakhtar4680]

Watching this after reading Why we sleep by Matthew Walker. Amazing book. Amazing video. Simple and comprehensive

[@PsychExplained]

Walkers book (and research) is fantastic. Glad this helped as well!! 😴

[@sabaakhtar4680]

@@PsychExplained Could you make videos on the science behind dreaming and paranormality? I'm a neuroscience and behavioral science enthusiast and find your videos informative and engaging

[@nhidmia]

Hi, im from Malaysia. Not from science student but taking psych major as my degree. Just want to let you know your explanation is really good and i understand all of it. It help me and my friends a lot. Thank you so much !

[@PsychExplained]

That’s awesome! Hello from USA :)

[@costantinekayombo5770]

I think it is more short and expressive that makes it awesome video on the topic

[@kaiactual3328]

I’m studying for the EPPP. Excellent lecture, thanks

[@neneshoriwa3657]

you explain so well it suddenly became easy to understand

[@ilaydahansu]

Excellent!! Best video ever about this topic❤

[@Sancochef]

Great video, crystal clear, thank you!

[@cicilg]

Great lecture! You keep the audience intrigued.

[@PsychExplained]

Thank you!

[@khaledkhador1964]

This is by far the best explanation of sleep I've seen on YT, immediately subscribed and thanks for your hard work

[@PsychExplained]

Awesome! Thanks for joining 😎

[@adrianteo2421]

The Best Sleep explanation I have ever heard

[@PsychExplained]

Thank you!

[@es8560]

Thank you for making this SUPER Awesome video! I really like the analogies you used; they are extremely helpful to me to make sense with the information. Thank you again! 🤝

[@PsychExplained]

Thank you!!

[@jeannemori1320]

excellent as I'm just starting and you broke it down so well. I appreciate that

[@PsychExplained]

Glad it helped 🧠🧠🧠

[@lclakier]

Thanks for an excellent lecture. Krauchi talks about a decrease in body core temperature and increased hand and feet heat promoting the onset of sleepiness.

[@annemeluch2276]

Thanks so so much for this video it clarified a lot of questions about the spinal cord and sleep I had.

[@PsychExplained]

So glad!

[@jacobwn3965]

You are amazing!! The best to demonstrate this!

[@PsychExplained]

Thank you! Happy learning 🧠

[@niesyauv03]

the best video abt sleep stage

[@PsychExplained]

So kind! Now time to get some 😴

[@jessen1462]

Thank you Dr Kushner.

[@PsychExplained]

Most welcome!

[@seyedmohamadmahdieskandari1723]

Thank you for explaining this!!!

[@roronoazoro3204]

Thank u so much for this amazing explanation.
This type of explanation where u filll all the information on board where I see the whole picture Idk why but go straight to my long memory

[@PsychExplained]

Glad it was helpful 🧠

[@TerosLegacy]

This video was extremely well done.

[@PsychExplained]

Thank you for the kind words 🙏🏻

[@ravidahiya8458]

SUPER......very well explained for a layman like me....the right level of technicalities....i am a 56 year old veteran!

[@PsychExplained]

So happy you enjoyed watching 🙏🏻

[@sreelakshmipadman3902]

Great Lecture sir 💗 Thankyou so much for this .This class just made very clear about all the doubts that i had about sleep cycle& stages

[@PsychExplained]

Excellent!

[@nas_775]

thank you, great lecture on sleep and super helpful!

[@izzatulmardhiyah2814]

I wish i found this during my final exam 😢 very good video sir, thank you so much!

[@marlyneizelmadrigal7228]

Very helpful, very informative discussion. Thank you so much

[@PsychExplained]

Glad it was helpful!

[@user-bz2hk5xu4q]

Awesome explanation.

[@user-iz3oe6zn5j]

love your work just saw your vid before sleeping !

[@haythamaltalib2984]

thanks for this effort, it has vital info with very easy way of learning

[@PsychExplained]

So nice of you

[@annavera02]

thankyou for this video!! the way you explain is so helpful ! :)

[@PsychExplained]

So happy to help 🤓

[@lisac7752]

Thank you for this video. I have been more aware of having hypnic jerks, and thought there was something wrong with me. It feels like being startled and I thought maybe too much cortisol. I've researched hypnic jerks and now I know that they are part of normal sleep cycle for up to 70% of people. I wake up every day feeling rested.

[@PsychExplained]

So happy to help!

[@underminezone7004]

Clear and easy to understand. I appreciate you for putting this together.

[@PsychExplained]

Thank you for the kind words :)

[@bintenur6684]

Excellent lecture

[@celestie02]

So beautifully explained

[@PsychExplained]

Thanks a lot 😊d

[@keen2461]

Awesome explanation! Thanks for sharing.

[@PsychExplained]

Glad it was helpful!

[@stephaniesmith6643]

Thank you. This is an excellent video.

[@PsychExplained]

Glad you enjoyed it!

[@sriparnamondol9079]

You are an excellent teacher Sir

[@PsychExplained]

So nice of you

[@mandybirt995]

Excellent presentation, thank you so much! Your enthusiastic, confident teaching voice, speed & timing and simple, accurate whiteboard content was a pleasure to follow. Your 20 minute explanation helped me to consolidate and visualize many of the points made by Dr Andrew Huberman and Matt Walker (in hours of podcast material). Well done. 🎉

[@PsychExplained]

You're very welcome! I enjoy Hubermans discussions as well. Happy learning 😀

[@Kentai_Shimakaze]

Amazing video, i dislike listening to most lectures at school but your lectures make me love learning and studying. It really depends on the teacher and you're an amazing one

[@PsychExplained]

That’s awesome! Thank you for the kind words.

[@deegallarupananda6927]

Thank you so much for simplifying the complex

[@PsychExplained]

You're very welcome 👍

[@user-tm7og1fy9l]

I have a presentation tommorow relating to sleep cycle and this video helped me so much.
Thank you!!!

[@PsychExplained]

That’s awesome! Good luck 👍

[@oumaimahannachi5496]

great explanation.thnx

[@carolynj.3463]

this is an amazing explanation you just saved me from re-listening to 2 hours of lecture thank you so much

[@Emma-pg7zc]

Amazing explanation!! Thank you!!

[@PsychExplained]

So glad you enjoyed it 🧠

[@vikschannel2779]

Thanks so much for this awesome video! It was really helpful and your explanation is great! I had sleepwalking that night and I wanted to learn about the sleep cycles!

[@PsychExplained]

You're so welcome!

[@rogeriomartins4304]

FANTASTIC video 👏 👏 👏

[@PsychExplained]

Thank you very much!

[@kaulickmitra6898]

Amazing Explanation.

[@ladingtonrahe8137]

Best lecture on sleep 💤. Thanks for sharing

[@PsychExplained]

Your welcome 🙏🏻

[@ahmedhamouda2932]

This is amazing. Thank you very much.

[@lindsaypack3464]

Fantastic video thank you so much!

[@Priyanshu_19]

Thanks sir it was so simple

[@hs6449]

Best best video ever, it’s help me a lot

[@PsychExplained]

Glad to hear!

[@Archie6666]

Great explanation! Easy to understand :)

[@PsychExplained]

Thank you :)

[@noone-kv7kf]

You are the bessssst fr ,thanks alot

[@karimayman2780]

Really appreciated!

[@user-vj7gk5cq3g]

Great explination , i realy enjoed it and learn alot about sleep cycles ❤ thank you and keep making these video

[@PsychExplained]

Thank you!! And get good sleep :)

[@1miracle1s]

Wow this is an amazing video, I wish there were more details

[@PsychExplained]

Thanks for watching!

[@pt68picaso]

Very engaging video! Just like a college lecture. If I wasn't watching from my phone, but on a big screen (e.g. TV), I'd be looking for a spiral notebook to take notes as if back 30+ years in college.
Watched until 9 minutes, will complete latter.😊👍

[@PsychExplained]

We are never too old to learn :)😁

[@FridaysAl]

God bless, that was some good explanation

[@theoplunkett5262]

great video!

[@PsychExplained]

Thanks!🙏🏻

[@PunmasterSTP]

This video was REMazing!

[@patsydolan6705]

This video is amazing. 👌🏼

[@PsychExplained]

Thank you for the kind response! Hope you learned a lot

[@claraarguelles2218]

Better teacher than what I have right now

[@PsychExplained]

Thanks for watching! 😇

[@dhenieldelapena2627]

Nice explanation, you're awesome!

[@PsychExplained]

Thanks! 😃

[@nisisinghrajput5548]

Thank you soo much now concept is much clear

[@PsychExplained]

Glad it helped.

[@eboumbowe2602]

thank you

[@user-jp7sd7dd8b]

Superb explanation sir , tq

[@PsychExplained]

So nice of you

[@calisthenicsindia8498]

Thank you so much

[@PsychExplained]

You're most welcome

[@Tuneinthelight]

Fascinating info. Thanks for putting this together for us. Now, if you could do one on how to improve sleep :)

[@PsychExplained]

It’s all about a “healthy” bedtime routine

[@mayurdongardive614]

Excellent video.make video on basal ganglia

[@aj_day2400]

Thank you

[@gshamsharma9069]

Excellent...🎉🎉🎉....

[@PsychExplained]

Thanks a lot 😊

[@gshamsharma9069]

@@PsychExplained ...please tell how many sleep cycles of 90 minutes are completed in one night sleep of say 6 hours...

[@RespectYourSelf1993]

Thank you. i have to follow you

[@dinadina8621]

Thanks for your help ☺️❤️

[@PsychExplained]

You're so welcome!

[@ARAVINDM1000]

Thank you very much✌️✌️✌️✌️

[@ritusplay]

Very helpful

[@PsychExplained]

Glad to hear that

[@anthonyberlan4495]

Thanks you very MUCH SIR

[@stevec5375]

I have virtually no REM sleep. I use an Apple Watch and use the Health App to monitor my fitness and sleep. In the past few weeks, it has shown little to no REM sleep. I can't remember the last time I actually had a good night's sleep. I have Parkinson's Disease and have had no indication that I might have REM sleep disorder. However, I do use medical cannabis to help me sleep and it doesn't work very well. I wake up every day exhausted. I know that I probably need to get a sleep study done to see what's going on but I can't imagine falling asleep in a clinic with so many wires attached to me.

[@PsychExplained]

I had a sleep study done a decade ago for sleep apnea and had an EEG attached all night long. It was uncomfortable but eventually fell asleep 💤

[@sofaxx5447]

thank you so much 👌👌

[@acacianorison]

Very Well explained thank you so much Dr Kushner🧠💚💚💚

[@user-mr3iv7bj6n]

wow thats really amazing

[@Cosmic_Event]

First, thank you for giving such a simple understand of circadian rhythms I have ever heard. Second, in my study of circadian rhythm, I'm trying to understand the difference between Suprachiasmatic Nucleus and Chryptochrome? Are you versed in this? In your humble opinion. Thank you

[@dr.ahmadjawadqureshi3343]

It was great

[@aiis.6170]

This is my first time to I know what exactly sleep stages means

[@vikasgupta1828]

Thanks

[@salimabouhamidi6318]

Hope you talk about dreams in your next videos

[@PsychExplained]

Great topic! I will get to it :)

[@kamrulhasan2938]

thanks.

[@PsychExplained]

You’re welcome 😇

[@Rafikdr]

Thanks a ton! That was a very good lecture

[@sck0305]

Well this explains late morning sleep induced exhaustion.

[@PsychExplained]

😴

[@Mohammedamer-pd1sb]

Great explanation that was clear as a whistle! I salute your efforts on making science as it should be fun, easy and approachable . Just a question... in which stage do we toss in bed? It's clearly not in REM but in which.

[@PsychExplained]

NREM :)
Probably 2-3

[@Mohammedamer-pd1sb]

@@PsychExplained Thanks for the elaboration! Have a nice day ahead 😊

[@tricia1956]

Awesome

[@PsychExplained]

Thank you for watching!

[@r.bhavani1032]

Love from India 🇮🇳 my Msc dissertation is about circadian rhythm disruption due to electronic devices and this lecture just cleared all my doubts about sleep. Thank you so much 😊 ❤️

[@PsychExplained]

Best of luck!

[@r.bhavani1032]

@@PsychExplained Thank you and can you bring more lectures on this topic please it would be beneficial.😊

[@raumshen9298]

Remember to cite him properly,

[@user-gn6en5oi4d]

Very cool, do you have any information about circadian lighting and how it can effect sleep?

[@PsychExplained]

they sell these types of lights on amazon. take a look!

[@tinanagda7755]

Thankyou sir for such a great lecture 🙏🙏...can you please explain condition of sleep paralysis??

[@PsychExplained]

Thanks for reaching out! I hope this link is helpful: www.webmd.com/sleep-disorders/sleep-paralysis

[@porridgeandprunes]

Thanks. That's the most thorough explanation about sleep that I have seen. I am 74 yo and have a sleep problem. My doctor suggests that I take melatonin but I'm not sure that it helps.

[@PsychExplained]

Thank you for the kind words!

[@dr.orderz557]

I wish my teachers taught this well lol

[@PsychExplained]

Thank you for watching!

[@joseluisgarciasantovenacur2326]

You freaking rock

[@PsychExplained]

😎😎😎😎

[@im3sha]

You explained it so clear! Thank u so much! I now understand this better! Subscribed!

[@PsychExplained]

Wonderful!!