Why Do Our Brains Have Distinct Hemispheres?

Подписаться 841 тыс.

Просмотров 80 тыс.

50% 1

Try Dashlane Premium free on your first device: dashlane.com/sc.... Use the coupon code ‘scishowpsych’ to get 10% off Dashlane Premium. #dashlane
We used to think having a distinct left and right brain was something unique to humans. But brain lateralization has now been found in everything from chickens to spiders! Does this change our theories for why some brains work that way?
Hosted by: Anthony Brown
----------
Support SciShow by becoming a patron on Patreon: / scishow
SciShow has a spinoff podcast! It's called SciShow Tangents. Check it out at www.scishowtan...
----------
Huge thanks go to the following Patreon supporters for helping us keep SciShow free for everyone forever:
Matt Curls, Sam Buck, Christopher R Boucher, Avi Yashchin, Adam Brainard, Greg, Alex Hackman, Sam Lutfi, D.A. Noe, Piya Shedden, Scott Satovsky Jr, Charles Southerland, Patrick D. Ashmore, charles george, Kevin Bealer, Chris Peters
----------
Looking for SciShow elsewhere on the internet?
Facebook: / scishow
Twitter: / scishow
Tumblr: / scishow
Instagram: / thescishow
----------
Sources:
www.mdpi.com/2...
www.ncbi.nlm.n...
www.frontiersi...
www.ncbi.nlm.n...
www.sciencedir...
www.ncbi.nlm.n...
www.sciencedir...
onlinelibrary....
www.ncbi.nlm.n...
www.sciencedir...
www.researchga...
link.springer....
www.cell.com/n...
link.springer....
onlinelibrary....
www.ncbi.nlm.n...
www.ncbi.nlm.n...
IMAGE SOURCES:
www.istockphot...
www.videoblock...
www.videoblock...
www.videoblock...
www.videoblock...
www.videoblock...
www.istockphot...
www.videoblock...
www.istockphot...
www.istockphot...
www.videoblock...
www.videoblock...
www.istockphot...
www.videoblock...
www.istockphot...
www.istockphot...

Опубликовано:

12 сен 2024

Ссылка:

Скачать:

Готовим ссылку...

Добавить в:

Мой плейлист

Посмотреть позже

Комментарии : 292

@SciShowPsych 4 года назад

Try Dashlane Premium free on your first device: dashlane.com/scishowpsych. Use the coupon code ‘scishowpsych’ to get 10% off Dashlane Premium. #dashlane

@ShutItKyle 4 года назад

“We thought humans were special. Classic.” Classic.

@VariantAEC 4 года назад

Just like Apple's iPod... Wait?

@hermanrobak1285 4 года назад

Well, from *our* point of view, we kind of are the center of the observable universe, aren't we?

@KaliTakumi 4 года назад

"'"We thought humans were special. Classic." Classic.' Classic." Classic.

@CoranceLChandler 4 года назад

and when we fail to think that, nay, to know that, l the ramifications have been and will be deleterious.

@loog8621 4 года назад

“””We thought humans were special. Classic.” Classic.’ Classic.” Classic.” Classic.

@Karishma_Unspecified 4 года назад

I've been listening to Hank WAY TOO MUCH: I needed to set this at 1.25× speed!

@janea5898 4 года назад

Karishma M. Me too 😂

@leftfootfirstpolitics 4 года назад

@@janea5898 Same.

@kindlin 4 года назад

He literally says everything fine, but just too slow. Like he's over pronouncing everything he's saying, or having to think about each word way too much.

@kindlin 4 года назад

I hate speeding up videos, but this one just really needed it lol.

@Karishma_Unspecified 4 года назад

I guess I just really like Hank! I mean... who doesn't? I think I'll get used to this host eventually... new things take time.

@klutterkicker 4 года назад

Reasons to keep the New Guy: * Knowledgeable about neuroscience * Clever transitions * Top of his class in the Hank Green school of emphatic speaking

@Svnipni 4 года назад

The new guy is awesome! It'll take some videos to get comfortable in reading off of a script in front of a camera but he's damn knowledgeable

@danielisozaki8522 4 года назад

But I like Britt (think that's how you spell it) too. I miss her

@Thessalin 4 года назад

I love Britt, but I agree. I know she has other things she's doing as well.

@klutterkicker 4 года назад

@@Thessalin I didn't know Britt was actually leaving the show. What else is she doing?

@Thessalin 4 года назад

@@klutterkicker Nature League. She seems to be more passionate about that channel imo. I'm honestly hoping she can put everything into that and let Anthony do psych if I'm right. Check it out.

@surabhi_kumari 4 года назад

I like it when my brain tries to understand a brain .

@mtbrain1 4 года назад

metabrain

@naturegirl1999 4 года назад

I like how a brain can refer to the brain doing things that the brain thinks it didn’t do Example: Person has random thought, why did my brain think of that?

@strongbadman2 4 года назад

I usually watch science videos at .85x speed because they often talk just a little too fast, so I didn't even notice I hadn't changed it until halfway through the video

@Felisquoreda 4 года назад

Because this is the internet I feel the need to point out how much I like the new guy. I hadn't even noticed that he talks slower than the other hosts, but just noticed his calmness. Don't let the critics get you down, Andrew! You're great!

@Babarudra 4 года назад

I like this new guy.

@TheRogueWolf 4 года назад

He's got a soothing voice. Not quite as soothing as Hank's, but not bad at all.

@brenj 4 года назад

I'm getting LeVar Burton vibes from him. Anyone else?

@evanyeh5509 4 года назад

He definitely has a calming sound to his voice, love it

@melaniescarlet01 4 года назад

Ditto

@MartynHutchby 4 года назад

@@brenj I had this on in the background and thought that they'd got LeVar Burton in to do the show!

@amberwilliams6746 4 года назад

Anthony is fantastic! Very articulate, clear, and calming presentation. Everyone has a different preference for speed - honestly I'd rather have a speaker who is a bit slow for my taste as I find that adjusting the speed in the video to be faster distorts pitch less noticably. Stoked to finally see him hosting after seeing him introduced a couple times in prior videos. Always exciting to see new voices added to the SciShow crew :)

@evilsharkey8954 4 года назад

Welcome, Anthony Brown! I look forward to learning more from you in the future. It’s a joy seeing new presenters come into their own. Curious question: were you by any chance a teacher before this job? Maybe an elementary school teacher? Your speech pattern reminds me of some teachers. I mean that in a good way!

@darkangelprincess101 4 года назад

I didn't even notice it until you said it. You're right he does sound like an elementary school teacher

@otakuribo 4 года назад

New presenter! New presenter! New presenter! He's good! 👍

@BrandonGraham 4 года назад

Good, but maybe speaking about 15% too slow?

@philp4684 4 года назад

@@BrandonGraham I just downloaded the subtitles for this and the previous 2 SciShow Psych videos, and using that and the video lengths, I've calculated the number of words per minute: This video: approx. 167 wpm Previous video (hosted by Hank): approx. 178 wpm Video before that (hosted by Brit): approx. 187 wpm So, going by that, Anthony is 6% - 7% slower than Hank, and 10% - 11% slower than Brit. Whether fast is better than slow is arguable. Come to think of it, if there have been any studies into how the speaking rate affects knowledge absorption & retention in listeners, that'd be an ideal subject for a SciShow Psych video!

@BrandonGraham 4 года назад

@@philp4684 Impressive work!

@sachiperez 4 года назад

Perfect speed. Easy to absorb by both hemispheres!

@GabrielaAlvares 4 года назад

@@BrandonGraham i watched at 1.25x

@tmanook 4 года назад

Have to agree, the new presenter is good.

@SydirahAricayos 4 года назад

His voice is really calming!!! I enjoy it.

@maxmusterman3371 4 года назад

Sydirah Aricayos my english teachers voice was very calming as well. Very nice if you want to fall asleep.

@ThrottleKitty 4 года назад

**Pulls my truck up next to a brain surgeon mid surgery** That thing got a Hemi??

@seawar4 4 года назад

So that is genius!!

@ThrottleKitty 4 года назад

@@seawar4

@Thessalin 4 года назад

Hi Anthony! Welcome to your watchers! I loved your presentation. However, I totally lost on our staring competition. BLINK MAN BLINK! (PS: Tell Caitlin I'm seeing all these crazy news articles from crazy space websites, but I can't believe any of them until I heard it from her. ZOMG SPACESHIP!)

@NA-ys9ib 4 года назад

I like Anthony. His more subdued attitude is a nice contrast to Brit and Hank's naturally more energic way of speaking

@Monody512 4 года назад

Anthony is giving me LeVar Burton vibes and I like that.

@deborahminess4668 4 года назад

I like him! Great presentation.

@TheRogueRockhound 4 года назад

Damn! This guy is great at reading script and presenting. Bravo dood, well done.

@omarosweekly1982 4 года назад

I would even dare to say about the new host that he's cute. ;-) hahaha

@maxmusterman3371 4 года назад

Omaro's Weekly hah chom choms

@MasterChakra7 4 года назад

Does this new host have the superpower of never having to blink, or is he staring directly into my soul throughout this video ?

@thetreebehindyou9474 4 года назад

Speakers quite good but my blink count was maybe 3

@AuntBibby 4 года назад

too high, his eyes must be really irritated or something

@32Rats 4 года назад

what if you blinked every time he blinked? We need peer reviewed evidence here

@AuntBibby 4 года назад

Crestfallen.png a trained team of syncopated blinkers is the only way to be sure

@thetreebehindyou9474 4 года назад

@@32Rats damn u right

@kingakitosanimations7960 4 года назад

I like the new guy. He has the perfect voice for the show and it's relaxing. Good job dude! Can't wait to see more

@kaleidoscopicepic14 4 года назад

As others have said, I'm loving the new presenter! Welcome to SciShow, Anthony!!

@maxmusterman3371 4 года назад

Honestly I wonder how this actor host would fair on scishow quizshow.. oh wait scishow quizhow sadly is going to be more popular as well. But I have to say he really does a good job reading the script.. just as the cc physics girl.. oh wait its monotone as well.. such true enthousiasm. (eng isnt my first language so sry for typos) Thank you anyway for all the AWESOME content you produced over the years. real chom choms for me

@mmcguire6286 4 года назад

Anthony's super cool but like. OVERWHELMING Playschool vibes. I feel like they finally made Playschool for adults and this is the educational content they have chosen to provide me. ty x

@greenredblue 4 года назад

Scientist A: I’m pretty sure lateralization is unique to humans. It must be why we’re special! Scientist B: Um... Quite a lot of animals have it. Like, even chickens. A: Oh, I didn’t know that. B: Did you _check?_

@srpdara 4 года назад

I like this new guy

@mikepierson7447 4 года назад

Love the new host great job ❤

@SamuelJFord 4 года назад

I've read quite a bit on this topic and this is the best quick summary I've seen anywhere.

@hermanrobak1285 4 года назад

I once read that handedness may have started out as a tie-breaking reflex: When in doubt, turn right. Has that theory fallen out of favour?

@gallantcp 4 года назад

NEW GUY! Guys there is a new guy did ya see the new guy? new guy

@classycompositions932 4 года назад

The brain equivalent of a dual-core processor.

@corycumner6918 4 года назад

New bloke is pretty good

@shaktikumarnadar 4 года назад

Wow what a calm and witty explanation loved it

@-dennis3755 4 года назад

New guy looks good, new guy sounds good, new guy is good

@FellowRabbit 4 года назад

I really like the new presenter! He's good at explaining things clearly, but he does talk a little slow. I felt like I was watching on .75x speed. D:

@rachelgrubbs 4 года назад

I like his voice. Calm is good

@lasphynge8001 4 года назад

Good job on your first episode as a host :)

@melaniescarlet01 4 года назад

This was actually his 2nd episode as a host. 😊 the first was the one about foreign lang learners having drinks

@lasphynge8001 4 года назад

@@melaniescarlet01 oops I must've missed that one (didn't click the bell). I'll check it out. Either way, good job still, he's doing well :)

@RaeWakefield 4 года назад

Hi new person 👋🏽 good to have you here. It’s nice to see that scishow has all different kinds of people, in speaking voice mostly. I like that some scientists talk faster than others, and some speak slower. It helps to better understand the information. 👍🏽

@LawrenceKassab 4 года назад

What's up Anthony! 🙂

@thstroyur 4 года назад

1:37 Yeah - and reducing ourselves into the sum total of our base material functions and composition is also fast in its way to become its own staple, as well

@bibicute942000 4 года назад

Welcome to the channel Mr.Brown. Just to let you know that we appreciate your soothing voice and slower speed. It's nice to have a variety of speed in the channel.

@selfelements8037 4 года назад

Great episode! Personally I find lateralization one of the most interesting subjects, and I'm obsessed with the Corpus Callosum. Never really thought about the possible correlation between brain specialization and movement, but the evolution theory makes sense; if an animal's motor cortex more refined results in an evolutionary advantage, then it makes sense to use only one limb to speed up specialization for fine-motor skills. The one important question remaining though is if there really is a correlation between motor skills and overall hemisphere preference.

@iiiCupCakeiii1 4 года назад

Really nice and calming to have a host talk a bit slower. Looking forward to more vids with you, Anthony!

@Master_Therion 4 года назад

The Earth has hemispheres because it is globe shaped. Does the brain have hemispheres because it is lobe shaped?

@iagreewithyou112 4 года назад

You're not funny.

@Felisquoreda 4 года назад

@@iagreewithyou112 it's a good dad joke

@seawar4 4 года назад

The earth is flat

@Master_Therion 4 года назад

@@seawar4 Does that mean the brain is flat too?

@mariuszj3826 4 года назад

I read some of the comments so it seems New Guy everyone likes you. Some segment cuts in the video seem a bit slower than others but I guess it comes with time 'cause you're a ...new guy. :P

@jessice293 4 года назад

I hit like on this video for one line... “we thought humans were special.... classic”. Also thanks for the education and loving the different psych hosts

@leonardo7642 4 года назад

Another question about this topic: Why do we even have two brain hemispheres and not just one single big brain?

@maxmusterman3371 4 года назад

Nim Chimpsky Im not educated well enough on this interesting topic, but i think ive heard that its not often possible for the other hemisphere to take over the roles that the lost hemisphere has specialised regions for. There are also humans that still have both brain hemispheres intact, but their "corpus colossum" (the thing that mostly connects the hemispheres) is cut (to prevent seizures and such) and those humans have strangely "impared" cognitive skills (type "split brain" if you are interested)

@maxmusterman3371 4 года назад

Interesting question. i have heard that there are specialised regions in the different hemispheres, but idk why the brains topology is as such. maybe throu the process of evolution? would love to hear an experts answer to this.

@purplefire2834 4 года назад

@@maxmusterman3371 i believe SciShow did a video ("Surprising body parts you can live without") about how people can live without significant parts of the brain. I can't check right now, but I think they mentioned that one side of the brain can "compensate" for losing use/access of the other

@estebanlegare 4 года назад

Super interesting you guys are great keep it up!!

@unidentifiedbipedallifeform 4 года назад

I like the pace of the new presenter. I dont have to pause the video to process the info.

@CrimsonRegalia 4 года назад

So the Corpus Callosum ia basically the biological analog for AMD's infinity fabric in their chiplet CPU design.

@LuisVasquez-nu4hu 4 года назад

He is so soothing omg

@theoverseer393 4 года назад

I like his clear pronunciation

@j.a.1785 4 года назад

Love the new presenter!

@blueckaym Год назад

How can I find out what are the main functions of the right brain (more specifically), and also test them on myself - to see how good or not I can perform them? I'm asking for specific info or a guide, as I discovered that I have underdeveloped right hemisphere (you can see in my avatar picture - it's mirrored as MRI produces the images so, but the white area to the side between the skull and the hemi-sphere is basically water)

@fep_ptcp883 4 года назад

Welcome, new host! Good job here, calm pacing, good entonations, well done!

@amanderan_oranges 4 года назад

I've never been so early to a video! I have a question: Is there an evolutionary reason why most people are right-handed VS left-handed? Or why left-handedness is so rare?

@WhenDevilsDuel 4 года назад

I've got a question too, do you ever use google?

@skysea7785 4 года назад

So lateralsation helps with multi tasking

@lovehonourhonour7253 4 года назад

Our brain is split into two sides because, of safety reasons, one side can duplicate the other, in case of Damage. Also we have two eyes, and two ears, so each side of our brain can handle one ear & one eye. This gives us faster response time, by way of 3D spatiality & resonence, we can see and hear and feel and sense, all that is going on all around us, at all times, until we become tired, then we have to stop and slow down and rest and nap. Then we can nap and start up all over again.

@mikkohynonen4911 4 года назад

Just watched PBS Eons video and it sound like this video is in slow motion. Hosts on Eons talk so fast while here its relatively quite slow lol

@SecretEyeSpot 4 года назад

I melted at the two chicks drinking water with their parent..

@ryn.999 4 года назад

I’m the only one that doesn’t like the new guy. That’s honestly amazing because he’s a good presenter/speaker. I just need him to blink a -tad- bit more and he’d be perfect. I don’t know why but the “staring” is actually bothering me.

@AntonConstanti 4 года назад

I also noticed that but it doesn't bother me too much.

@purplefire2834 4 года назад

I've noticed some other hosts don't blink much either. I agree that it's a little creepy though.

@ryn.999 4 года назад

Purple Fire 28 omg... I had to go back to see and it’s like they literally all do it

@purplefire2834 4 года назад

@@ryn.999 Yup. Hank seems to blink more to me though. Maybe his commentary style is just different enough so that you don't notice he's staring? I also noticed this host has his eyes really open too, I think that's a factor. Like there's staring as in not blinking and then there's wide-eyed staring.

@ryn.999 4 года назад

Purple Fire 28 the wide eyes is probably the only reason why I noticed the staring in the first place, because I hadn’t seen it in the others at all until your previous comment.

@HQ4575 4 года назад

hey its the new dude! i like him

@theMoporter 4 года назад

I really like this new presenter! I'd like if he could talk just slightly faster, though

@Zahri8Alang 4 года назад

Hm.... I wonder what the brain's limit actually looks like? I mean, we constantly retain information and skills(some are just tuck away).... although since we have unique sets of aptitudes regarding kinds of information and abilities, we may just level them up at very different rates

@montler9022 4 года назад

New guy has a great voice!

@Kamel419 4 года назад

i like the new guy... but curious what happened to the previous host?

@WhenDevilsDuel 4 года назад

Don't ask too many questions. It's not good for your well being. Let's just say he went out for a walk, might be a little while till he gets back. The weather is looking a little lethal.... Just take a seat, relax, watch a video or two and maybe learn something new.

@thatcherbuck 4 года назад

The new guy is good. Not what I expected but good

@ianrbuck 4 года назад

"Talking Neuronal Chitchat" is a podcast I would listen to.

@unleashingpotential-psycho9433 4 года назад

Our brains 🧠 are amazing 🔥

@McHaven07 4 года назад

change scares me, but this new guy's okay

@darkangelprincess101 4 года назад

I can't remember the actor's name right now but he sounds like the guy who was in Star trek and did Reading rainbow

@ethandole2218 4 года назад

Flawless sponsor transition

@odysseas4os 4 года назад

Nice prank guys, slowing down the video so we play it at 1.25 speed. also LOVE the new guy, i can't wait till he learns to read out loud at a normal pace. :)

@MegaAstroFan18 4 года назад

A brain talking about other brains. And a brain typing this comment with its hands to talk about brains talking about other brains.

@trelligan42 4 года назад

Nice segue to the sponsor.

@mustardsfire22 4 года назад

So could a brain fart, or a random loss in train of thought that needs a second to catch up, be a side effect of a signal being transmitted between hemispheres, thus the delay accounts for the brain fart?

@jbrassard100 4 года назад

0:14 I mean, even on your literalist definition of right-brain/left-brain people, they do exist. People have survived hemispherectomies. Split brain patients essentially have two brains, a left and a right. Not for nothing, I learned this on "the internets."

@anniekate76 4 года назад

How did they test spider brains for asymmetry?

@eustacia03 4 года назад

New guy!!!!

@Olivier_Odorant 4 года назад

Hello new presenter! Welcome, and if I may, you could totally speak a little faster, we would understand you just fine.

@cindyzachielrivera373 4 года назад

i actually like his speed just fine because I have to listen and translate in my brain at the same time.

@kindlin 4 года назад

@@cindyzachielrivera373 I could see how some might find it a nice change of pace, but I'm quite a fan of the fast and fun loving Hank, if I may be so bold.

@eugenetswong 4 года назад

If you all want speed, then speed up the video. Having the speaker speed up leaves less choice. When we slow the video down, it doesn't always work out well. The faster video speeds have improved since they were first added, I think.

@GRBtutorials 4 года назад

Roxana Şanta 1.25x? Noob, I watched it at 1.5x (just like most other videos)!

@metaphoricdirigible1499 4 года назад

Well, my left hemisphere can’t keep up with someone speaking much faster. I prefer to watch RU-vid while sipping slowly on a cup of coffee every morning and have no desire to rush.

@Primordial_Radiance 4 года назад

This big brain video

@pgoeds7420 4 года назад

5:57 discreetley or discretely ?

@loog8621 4 года назад

I like the new presenter It’ll take me awhile to get used to him tho

@TheTwick 4 года назад

I’m SPECIAL! My mother told me so. 🤯

@starshot5172 4 года назад

The left part of the brain makes quick decissions, and the right part of the brain thinks about it before doing so... hmmmmm coincidence?

@UltraHuman 4 года назад

Hi Anthony 👋

@doyourhomework7305 4 года назад

With split-brain patients essentially becoming two persons, it would be interesting if you could split the brain into 4 (provided it could be survived) and see what would happen.

@gaelengesser9484 4 года назад

Just to mix things up I'm left handed for fine motor skills and right handed for gross motor skills. That is, I write with my left hand but bowl and play tennis with my right.

@rigrentals5297 4 года назад

Reading Rainbow dude would be proud of this host

@deep_fried_analysis 4 года назад

0.75 the speed of Hank. Welcome!

@wombat.6652 4 года назад

Why do the outsides of brains look like guts? Folded tubey pinky thingies.

@TPPMac1 4 года назад

Anthony reminds me of a younger LeVar Burton

@GladBeastBoy 4 года назад

OOOoo00OOoOo a newbie!!!! 💕💕💕

@custos3249 4 года назад

Sooooo..... Is no one going to point out that the new guy is basically Levar Burton from Reading Rainbow? Those in the know, close your eyes, and you'll hear it.

@smokyjoe321 4 года назад

This didn't explain why when people have lost a hemisphere of their brain through injury or surgery. The Body will split the remaining hemisphere to essentially perform the tasks of 2 hemispheres therefore creating 2 half brains again.