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- เผยแพร่เมื่อ 31 ธ.ค. 2024
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Are you a left-brained person or a right-brained person? Spoiler: You're neither. Each of us uses both sides of our brain for most of what we do. But still, there are a number of brain functions that do show lateralization, where they are localized to one side or another. Why is this? And how does it influence our definition of consciousness? People with "split brains" can help us figure it out.
Special thanks to Dr. Michael Gazzaniga for his help researching this video!
Here's a wonderful vintage film featuring Dr. Gazzaniga's early split brain work: archive.org/de...
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READ MORE:
Gazzaniga, Michael S. "Forty-five years of split-brain research and still going strong." Nature reviews. Neuroscience 6.8 (2005): 653.
bit.ly/2ymOh55
Gazzaniga, Michael S. "The split-brain: Rooting consciousness in biology." Proceedings of the National Academy of Sciences 111.51 (2014): 18093-18094.
bit.ly/2yoacZo
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It's Okay To Be Smart is hosted by Joe Hanson, Ph.D.
Director: Joe Nicolosi
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People with surgically split brains show some pretty strange behaviors. Do they prove that we've all got two conscious minds inside of us? It's nowhere near that simple, because the brain never is… 🤓
Tell us what you thought of this week's video!
It's Okay To Be Smart how can the video uploaded 30secs ago but this comment is 33mins agi
It was great
It's Okay To Be Smart Thank you for making these videos!
It's Okay To Be Smart plz reply
Why do I have brains around my anus?
I wish you had gone deeper into the split brain people. There are some really weird examples out there. Like the man who was beating his wife with one hand while the other tried to stop him.
Zachary Manning
Any links to videos
I also want the link
Links?
Also, which hand was which?
I want the link to this.
I read it in a psyche book years ago. I don't know if there's a video on it. I did find a similar case where a woman who had the procedure would beat herself www.bbc.com/news/uk-12225163
And here's an article that mentions the man beating/saving his wife from himself. www.psychologytoday.com/blog/the-superhuman-mind/201211/split-brains
Two brains? I can't even use the one I have much goodly.
Case in point? lol Just joshin'
voosh...
and vooosh again
I think you use it pretty goodly.
Master Therion you're bigly good. Don't put yourself down 🙂
PS: I just needed a reason to use bigly because you used goodly😛 😇
then git good
I'm in two minds about this.
Hopefully you'll make a split decision
*Both are pretty good with it*
Thee Adjudicator like a half split pizza!
@@DogDogGodFog It only took 2 years for someone to notice.
@@jolez_4869 Hahah.
I think that split brain is one of the most fascinating things I have ever heard about (I've looked at it before) it just amazes me how it's like that person who was once just one person can have two brains with two different opinions inside of their head. There was a guy who had had the corpus colostomy (if you want to get technical) that was putting on his trousers and one of his hands I think it was the right hand kept on pulling them back down again.
I understand what you said, but that's far from "fascinating" for me!
Bahaha you really just typed "corpus colostomy." I don't think you know what a colostomy is, bud.
Jim Whitmire I do its the surgery where the brain is split in two. I'm sad enough that I hace watched videos on that very surgery.
A colostomy is a removal of the colon or part of the colon.
Isn't that a colonostomy. Not really willing to watch one of those on a youtube video. I draw the line somewhere.
This explains why when you're having a conversation (either with yourself or whoever) time seems to pass faster, your left hemisphere is being more conscious than your right (which is in charge of the notion of space and time). When you're bored instead, your right hemisphere is being more conscious than your left (since you're more aware of time and space)... 🧠🌟
"You’re gonna lobe this video" well played It's Okay to be smart. Well played
When does he say that?
Green05 The description.
+June Carlo Reyes Oh, okay. Thanks!
Left half appreciates that joke.
If my brain is an orchestra, then the percussion section is too rowdy and keeps cracking jokes during rests.
HEY... Not all per percussionists are like that -.- #StOP sTEreOTyPeS
Manos: Yes they are. Just like how all Brits like tea, all Canadians are friendly, etc.
Hush, don't let them know
If my brain is an orchestra, the conductor keeps changing the song.
This tastes like CGPGrey.
That was my thoughts exactly! The "You Are Two" video! :D
THIS TASTES LIKE EGORAPTOR!!
Cypher Caliban honestly this video is pretty much a duplicate but with more animations
+Jack Gogvail Grey's video is great but I came to a different conclusion than he did. We spoke to Dr. Gazzaniga about his research, and while we don't fully understand consciousness, saying "you are two" is not in line with the current science. You are one, with modules.
With a hint of strawberry.
3:32 - "ThinkMeat™"
brb changing my channel name
@CL Melonshark yes, you are.
@Central Intelligence Agency no he is the 2nd
Potato
The human brain is the most complex thing in existence. So much so that it can't fully comprehend itself.
Joshua Pelfrey false
The soul is more complex
Our "soul" is most likely just energy though, flowing through your body, keeping you alive.
False, your soul is the current state of your brain, like grooves on a CD. So it's not more complex, it's the same. Also, your soul doesn't keep you alive, your internal organs are.
I have read a quote some time ago:
"If the human brain were so simple that we could understand it, we would be so simple that we couldn't."
What about counsciousness? you're (linearly) the same flow of energy that goes through your brain and shifts as things happen.
But you're always you, inside your mind -even when you're asleep it's the same counsciousness. But if you get knocked out go into a deep coma or faint, the activity in your brain stops; but when it resumes are you still you or is it a something else that just reads the previous knowledge, skills and memories that were left in your brain?
When I was at the young age of 12 (back in 1997) I was knocked over by a car, what destroyed the left side of my brain. Doctors said I will die in my coma ... coming out of the coma 8-9 weeks after being knocked over, I had loss the use of my right hand side, people pick my arm up and it dropped like a rag doll, my leg was the same... The hospital said I will be in a wheel chair for the rest of my life.
I could understand the Doctor and the words he spoke, but being unable to respond I tried to put my thumb down and yelped a word that sounded like a mumble. The Doctor lent over to me and said ' I'm sorry Lee, but your family need to carry on with their life's and you will be looked after by a home...
Well with the Doctor saying that, I pushed myself to get as best as I could... I was in my wheelchair for just over a year, then a walking frame for about 6-7 months... I was still unsteady on my feet.
Now days I'm a father of two daughters, I'm married, even though the left side of my brain had and still is injured, I believe being at a young age of being knocked over, the injury just stopped growing the rout it had planned, for the big bang it received, it just found a new way of growing as much as my brain could.
That's inspiring. You should write a book.
Can you speak?
I wonder what if you lost the right side of your brain instead...
They seriously said “your family needs to carry on with their lives, and you will be looked after by a home” that’s probably the worse thing a doctor could have possibly said to a 12yo in that situation...
Oh I’ve heard of this! I think your left brain started making room for doing the things your right brain used to do. It’s amazing.
You guys really nail the making of this show. Everything is so well done, both entertaining and informing. Congrats!
Fascinating. I am recovering from a migraine. During the migraine, I was able to think thoughts, and sound them out in my mind, but speaking them out loud, or typing them resulted in a few intelligible words that then dissolved into gibberish.
If both sides of the brain can operate independently of each other, I wonder of the patient would develop multiple personalities, the longer the brains are separated, the more differentiated they become, and sooner or later it would be like two people operating one body.
I don't know about that, but multiple personality disorders are typically caused by immense childhood trauma. As a result the mind fractures into separate "personalities". As wach persona isn't necessarily a mind on it's own, the mind just splits in order to cope with what is happening. These personalities can communicate and be in control at different times, but I'm not sure if physically splitting the brain will have the same effect.
I know this is years late, but that is kinda what happens, if you ask each side a question, they can answer differently.
Because they used to come together as you, I don’t think they would grow into fully fledged personalities, but they do at least have two favorite colors. It’s something other than mpd, but there would be disagreement.
They are playing co-op mode
With split brain surgery, you don’t become two “personalities”, the brains and persons are completely unaware of each other. With personality disorders, you can have alters who are co-conscious, you’re aware of your other personalities (depending on the experience with trauma and how conscious the body is with each alter) but with a split brain, you’re unaware of your other half, trying to work as two separate persons in one body (and I know with DID, your brain won’t let you know you have more than one personality, you’re unaware of who inhabits the body or who the other persons are) but with being split brain, you don’t switch between two consciousness. You have dual consciousness but are completely unaware of each other. So you kinda think as one person but you act as two cause with split brain, people can have alien hand syndrome type symptoms. I don’t know how accurate this is because i don’t know much about personality disorders but it is my take on what I’ve learned about both
3:50 I don't think the symphony will lose any beauty after studying it !
I dont see enough people talking about this experiment which is so far one of the craziest I've ever heard of
You guys are really good at making science poetic
The phenomenon of a participant consistently managing to eye track a stimulus without conscious thought - or even awareness - is an exciting avenue of research; opto-kinetic nystagmus. Just extraordinary.
This is such an amazing video. It is much, much better than most of the other videos that I’ve reviewed that address a younger audience. First of all, it’s scientifically accurate, that’s amazing by itself. If this video were simplified even more, so that it could be used to educate a first grader, it would be perfect. Thank you for not using complex terms, statistics, percentages etc.
1:45, it is actually the opposite here. When the word is displayed at the right side the person can name it, but not if it is shown in the left side.
In my case I have no brain.
Bill Cipher with his hands
Is that even possible
have tres
tres brian
My heart is Made out of kookies r/wooosh
Sorry i just had to...
I think there is a mistake at 1:53, the left brain is responsible for speech and the right side of the body. So a human with a split couldn't say the word monkey when it is only seen by the LEFT eye, but the left hand can draw it since they are both controlled by the right side of the brain.
THANKS! I watched the "You are two" Video of CGP Grey some days ago and was wondering how and why this split brain works... You helped to clear some unexplained parts! (and I'm know more sure that is wasn't scam)
The best thing is split brain guys can play rock, paper, scissors with themselves.
"Stay curious" = honestly my favourite thing ever 😄💕🙌🏻💕😄
Please never stop making content - my life isn't complete without you
I've been watching your videos in every minute of free time I have had for the past week and I've learned more than in uni
Love your vids guys! Keep it up and greetings from Poland!
So... I'm Autistic. Which, for me, means I get interesting and annoying lessons in practical neuroscience.
Did you know that sometimes when you can't speak, you can still sing? I didn't until I experienced it myself.
Did you know that most of "seeing" is just your brain automatically conceptualizing what you see? I didn't know that until I couldn't see, but could tell my eyes were working.
Did you know that voices are processed differently than normal noises? I didn't either until I couldn't understand voices for a couple hours but could still hear the refrigerator humming.
Did you know that your brain filters out a lot of stimulus for you? When it doesn't, you can hear and see and smell exceptionally well... But you get massive headaches and existing is awful.
One time, I was on sensory overload, so I went outside where it was dark and quiet. I heard a coyote and saw it too. I quietly told my brother to come see it. He came out and couldn't hear it crashing around in the underbrush. It was so loud, and I could see it so well. I thought he was messing with me.
Nope. His brain is just really good at tuning things out. Mine fails at it sometimes.
3:42 "think meat" I can't wait for an opportunity to casually drop that one into a conversation 😆
0:13 they have the left and right brain mixed up. They have the right brain on the left and the left brain on the right.
I'm doing my Master's in Computational Linguistics atm and took some classes in Neurolinguistics as well as Psycholinguistics when I did my BA. I learned that there is no actual neural substrate for human language. While it is true that Wernicke's and Broca's areas respectively seem involved in semantic mapping and syntactic structuring (damaging those areas result in different types of speech impairments; aka aphasia), recent fMRI and other imaging methods have clearly shown that the whole brain is active when processing or producing language. Even the cerebrum for timing speech and, of course, the prefrontal cortex. The latter is not really surprising, considering that language is primarily used as a means of communication, i.e. social interaction. However language does seem to be indeed lateralized to the left hemisphere.
oh! yall mentioned prosopagnosia right out of the gate! thats super neat, thanks! i think about the many tiny ways it has affected my life every day
It's so fascinating how a human brain works. How people on our planet behave and how they are dispersed and function reminds me of a human brain a little
I knew this. It's very cool. Split brain people even see seperate from each eye.
Really has you think there might actually be two separate consciosnesses for each of us...
0:15 you were speaking about right brain, with the orange color, then left brain, with the blue color, but... when you project that into yourself like that, you are reversing it all LOL
"We can study a symphony by describing the physics of individual soundwaves, but it loses a little bit of its beauty in the process."
Speak for yourself. I've never understood why measuring the marigolds stops you from being able to simultaneously admire their beauty. And understanding the _why_ and _how_ of said beauty has always made it more wonderful to me.
Sorry, am I taking a metaphor literally? I do that sometimes; it's a bad habit of mine.
Yeah people talk about how knowing how the magic trick works spoils it but really you end up admiring the person who does it even more because you can appreciate their slight of hand
I was so fascinated about the split Brain functioning that i got chills
...or maybe it's just very cold here
I've been looking at more and more videos about the split brain thingy and i still dont understand, like if you tell a story to the left brain (through an eye or an ear ig) the person wont be able to speak it out loud even though one part of the brain knows it? How would that feel? Would then the left hand be able to write down the story on paper to "tell it" To your left brain, kind of syncing them up? Or would it forget about it? But theres no way how would it know that the right brain doesnt know it? Theres so much that simply doesnt make sense and I cant find more explenations anywhere
If I think of myself as two distinct individuals, then those conversations in my head make more sense. I also use that knowledge to my advantage insomuch as I will ask my other self to find the name of a person or figure out where I put something. After some random amount of time, the answer appears in my head! Works great!
Brain = "think meat"
My brain named itself. It named itself "Brain".
The last word is a whole message. ❤
Sir: My left and right sight of the brain harmoniously agree that I love your channel.
Its interesting you use the symphony and sound waves as analogy. The missing link is perception.
This is really interesting. I will definitely do some reading on this. I wonder if there are people who are born with split brains.
Is there a way to cut off our emotions? Like cut off connectivity where emotion is processed?
In theory, yes. We can damage it by a fall. It happens with a psychopath i believe
Yes and no. Emotions are not separated from the global functioning of the brain. For example it happened to Phineas Gage, but it totally changed his personality and reasoning capacities. Emotions are part of the normal functioning of the brain, they are not biases. You can read more in Damasio's book: "Descartes' error"
Thanks Johan!
Thank you to you both. That saddens me to hear as it bodes ill. Oh well.
I'll take a look at that book you mentioned.
Emotions are essential to the formation of memory.
Why am I so addicted to these videos? Lol . You should do a video about why people are addicted to facts!
Split Brain is the source of Consciousness Spin, which relates to ESP and Morphic Resonance Memory in Natural Selection.
What does the cipher at 0:30 say? I assume it says something; they wouldn't miss a chance for a clever joke.
Soooo...where can I split my brain and what would it cost?
Brain: did you do it?
Normund: yes
Brain: what did it cost?
Normund: everything
Need more vid about this split brain condition- fascinating yet spooky
weird, The Bible said, don't let your right hand, know what your left hand does, one side manages pride the other compassion. Your turn.
I learned about this in psychology last week and I was surprised to see this video 😆 It’s so interesting to learn about!
I don't _mind_ being two.
this was written by my right brain with the right and left hands by communicating that to the left, while the left helped with grammar and propler spllling
I had my left temporal Gyrus removed in 1985 to cure my epilepsy . It was the first such operation with 100 % success and NO side effects , no seizures , no medication and all former abilities retained including 124 IQ . The changes are miraculous and the impact is positive .My prayers were answered . I understand the mind to be the sum of the brains functional collective, and can be influenced at times by the surrounding input , at other times when alone seeking to clarify its own uncertainties.
Best infotainment channel
The graphics of left and right brain hemispheres were
wrongly matched to your head at 0:13
Thank you for intellectual stuff presented with creativity
This was very informative. Can you do an updated version of this same video if there has been any advancements in what science knows now versus when you made this video?
3:41 “three pounds of think meat” was my nickname in high school.
i can only recommend a book on that topic: I think it was called "the origin of consciousness and the breakdown of the bicameral mind". it's quite an interesting theory on consciousness and the origin of religion.
Hey Joe. Long time watcher,first time comment. I recently watched your "science behind GoT" video. Could you explain the "sciences" behind Rick and Morty?
When explaining that different parts of the brain work independently for a unified goal this would explain why some scientists believe that consciousness has something to do with quantum physics in particular spooky action at a distance. It's not necessarily what I believe but you can see why they made that leap.
I think that's pseudoscience. As far as I know, cells are really big and hence way beyond the realm of quantum effects. I can't see why only neurons should be affected by said quantum effects and not every single cell out there.
we need a fact check on 1:46. Left hemisphere is characterized by language and speech(wernicke/brocas area). Therefore in a split brain individual the words seen on the right visual field will be processed in the left brain hemisphere(optic chiasm) allowing one to verbalize what they saw, which was incorrectly stated in the video. On the flip side, for words seen on the left visual field they will be processed in the right brain hemisphere and due to lack of language brain structures in the right hemisphere the word seen will not be verbalized but able to be drawn with the left hand.
For reference:
th-cam.com/video/ZMLzP1VCANo/w-d-xo.html
Awesome video. Can you guy's follow this video with one talking about the understanding of what is and where does our inner voice comes from?
+Renzo Gaspary Vanessa at BrainCraft just did a video about that!
I have some questions that may disprove a hypothesis of mine.
I'm gonna set up a scenario. The scenario may not follow how the brain actually works. If so, tell me.
Scenario 1: One side of the brain has some information, a goal, and some options to choose between on how to reach that goal.
That side thinks of reasons and decides on an option based on that.
Can the decision be sent to the other half independently of the resaoning behind that decision?
Is there any way that one might be interrupted or redirected or something?
Scenario 2: One side takes in some information, and identifies that there has to be a physical reaction, but that the other half has to calculate the reaction. The information is sent to the other half.
The other half figures out what should be done, but can't do it, or can't figure out how to do it, and therefore sends its result back to the first half, which then does the thing. (base scenario)
Branching off of scenario 2 is scenario 2a: Let's say that for whatever reason, the corpus callosum is limited or filled when either half tries to send information to the other in scenario 2. Will lower-priority stuff be delayed? Or scheduled? Or redirected to be stored in short-term memory? Or something else? What happens to a thought that can't be passed between the halves?
Separate branch of scenario 2, scenario 2b: I forgot what scenario 2b was while formulating 2a.
General questions:
Can one half be bored/understimulated while the other isn't?
In what way does being tired affect the brain as a whole?
In what way does being tired affect the corpus callosum? (please answer both this and the previous question instead of just one of them.)
What are the steps the brain takes when a person has something they want to share, and ends up doing so (verbally)? Possibly a confusing question, so I'll make up an example that does not necessarily accurately reflect what I would assume the answer would be:
One side has an idea or information, and decides to share it.
Side one can't formulate the idea into language, so it sends it to the other side.
The other side formulates it into language, and cooperates with the first side to make the grammar work, and plan the sentence structure. The result of that is stored in the second side.
The second side can't turn the words into actions, so it sends it to the first side, which then figures out the actions.
First side can't perform the actions, and send the info on how to do the actions to the second side.
And the second sode then makes the person say the words.
This can of course happen as a continous stream, as these calculations would all be happening in different parts, essentially making it an assembly line.
And what would happen if certain parts of that assembly line worked incorrectly? like if the second half disagrees with the goal, and refuses do do its parts in reaching the goal? Or if stuff gets mixed up with another thing thie person wants to say/has just heard? Where do certain errors in human behavior stem from?
I didn't mean to write this much, but compared to other people, sorting though google results and research papers takes an unusually large amount of my energy.
edit: I'm only ¼ of the way through the video. I have exhausted myself, and will watch the remaining ¾ later.
I'm just thinking of the book Visser, when the alien decides humans are insane because we have two arguing brains in the same head.
After reading Sam Harris's Waking Up I realized just how interesting and important split-brain experiments are. Wild stuff when applied to theories of consciousness and the idea of self.
What's Waking Up about?
th-cam.com/video/kAAfxZknd7s/w-d-xo.html
Gotta keep open *minded* about this
I love your channel you are very smart
And it's okay to be smart!
Finally a better video about this than grey's you are two video.
there is a standing theory that the left is controlled by the right and the right by the left as a part of a reflexive fight or flight system.
threat from right go to left. While this is a theory and I do not do it justice in my description it does have some pretty good points.
The brain is very adaptive but once a "module is formed it tends to be static, so when a brain is divided each half adapts in isolation creating the illusion of a person being of two minds, when it , in fact, is a person with two halves of a mind trying to adapt to no communication with its other half. less entertaining but much more rational answer.
people can draw with both hands because the information for the drawings are coming from completely isolated segments trying to act independently rather than cordinate with the whole.
0:13 I might be wrong, but I think you put the brain sides the wrong way around, unless it’s backwards
Really good metaphors in this episode. Good job!
Really interesting video, but why the left and the right sides we switched? Each time you show animated brain and said "left brain..." You pointed the right side. So confusing.
when you do programing you will find that the code goes into modules like classes and functions. first you have the interface, thats what you ofthen see, then the controller that handles what comes in from the interface, then a layer of clases and subclases. it is simple. a more advanced vertions implements more controllers, one controller have multiple clases.
The orchestra comparison seems apt. Even the composer doesn't need to know how to play every part, only what they sound like and the limitations of the instruments playing them.
To be honest I’ve learned a lot from this channel
Do you want a hot dog
RB: no im on a god damn diet
LB: hell yeah im hungry as heck
"nhoell iyeamh ima godhungry damasn dieheckt"
...
Indeed, When did we go from a bundle of cells in our mother's womb to being able to process the world around us? Also at what point did we go from being a blank baby to being who we are? Consciousness is truly something to wonder about.
Mind blown! Too short a video, though. Is there any hope of expecting longer videos instead of just such teaser trailers?
Awesome! Beautiful segment!
Because evoulotion doesn't care about making sense. So true
Best channel ever
Split brain patient is all gangsta drawing two different pictures at the same time... until right brain starts getting suicidal
Very well made. I'm always surprised by our minds. Your video might just help me better understand myself (insert a selfish quote)
one of my fav vids thus far!
Clicking on this video was a no-brainer.
This video led me to these questions, if neurons work like cables that connect every single functional region of the brain, isn't the same thing in case of computers? and as we already know about the structure of neurons, isn't possible to make neural-cables? and if it is, wouldn't it be also possible to create similar neural-structure of the brain?
Awesome channel! keep it up!
Woo! I'm early!
Just wanna say that I really like this channel, and keep it up!
Funny that that map is unobscured for about a second and I recognized Austin!
I wanna see what happens when you put half of the brain in another body can they only control half the body or can half a brain control the whole body but there's just not room in one body for both
What this makes me wonder is that since our hemispheres control the opposite side of the body. Do our eyes process the information they receive visually in different ways in conjunction with thier respective hemispheres? Let's say that if someone was blind in one eye, would the functional eye be more analytical and aware of how an object interacts with the world around it if it was the one controlled by the left hemisphere? And if the eye was controlled by the right side would it be more aware of artistic patterns and how an object affects an individual emotionally or mentally? I would be interested to see your take on this.
I think mathematically studying stuff just adds a layer of beauty to them
What would happen if you showed their left eye a message saying "walk left" and their right eye a message saying "walk right". If they tried to comply, what would their legs do?
I liked the symphony analogy.
Beautiful orchestra... yeah right.
To understand a joke is like dissecting a frog. You understand it more but you kill it in the process.
please colour the left half green i have synesthesia