I sometimes use my entire brain all at once.... But that's called a generalized seizure, and it's not fun.

When I was 19, I went to a drive in movie with my friends. They wanted to see Lucy, a movie based entirely on the premise that you only use 10% of your brain. I got very drunk, (partially because the movie was driving me nuts with its Inaccuracy) and I apparently ruined the movie for everyone in the car because I would not shut up explaining the flaws in the plot. Thanks for coming to my ted talk.

That 10% brain usage thing may be a myth, but there are some people I’ve met that really made me reconsider whether it really is a myth

We were covering neuroplasticity when I was in Gr12UBio and we looked at the story of a 3-year-old who had to have half of her brain removed due to numerous (every 30 seconds) spasms. 3 days later she was dancing in a ballet studio (albeit somewhat gracefully) and I couldn't believe my eyes. Apparently as the empty side was filling with cerebral spinal fluid (CSF) the other hemisphere was exponentially creating new connections to make-up for the loss.

There are 3 types of people in this world. People who can count and people who can't.

Doctor: "You only use 10% of your brain." Patient: "People only use 10% of their capacity?" Doctor: "No. Just you."

I have been saying for years that we should teach anatomy & physiology in schools. Kids are so anxious to learn, we could start early with the basics & by high school, kids could better understand themselves & maybe, the effects of the choices they are making. Like an owners manual! This is gr8 info that I share with my grandson!

*5 things my brain wants to know about itself.

I remember taking a test in school to see if we were "right or left brain". Mine showed I was pretty much in the middle. it was like 49%/51%. My teacher sid I did the test wrong and had to retake it with her right there. The results swapped to 51%/49%. She was so mad, said I can't be both and to pick one. Said I must have something wrong with my brain. I decided that I am an imaginative scientist or a logical artist. She didn't like that either. EDIT: For those of you that do t believe me, this was before scientists found out that we don't use one hemisphere of our brain more than they other. They know how we use them both equally as much. But yea, we did have to take a stupid test to determine whether we were left or right brained.

To the people who still want to use 100% of their synapses simultaneously: good luck surviving that massive seizure you just wished for. Information comes from *patterns* of activity, not *amount*, and if all your neurons are firing at once, the only pattern is "all on", which provides no information...except possibly your death. Anyway, a couple of things I wish had been mentioned: 1) Alien Hand Syndrome. After a colossotomy (or with other damage to the corpus collosum), occasionally a patient may present with Alien Hand Syndrome, in which one hand/arm can sometimes act independently of the person's conscious desires. In other words, one hand gains a "mind of its own". In reality, what's happening is exactly what Hank mentioned in this video: the two sides of the brain have come to different decisions, but without a functional corpus collosum to communicate and integrate that information into one action, both sides act differently--leading one side of the body to do something different from the other side. In severe cases, it can even reach the point where the patient has to use their "controlled" hand to physically restrain the "alien" hand to stop it from moving since they can't stop it themselves. 2) With regards to neural pruning, research has shown a strong connection between failures in neural pruning and schizophrenia-like symptoms ( scholar.google.com/scholar?hl=en&q=schizophrenia+neural+pruning&btnG=&as_sdt=1%2C10 ). In other words, if all those connections that formed during your development aren't properly cut down, it can lead to hallucinations and other schizophrenic symptoms later in life. So don't worry, guys: you don't want those excess connections to stick around anyway, trust me.

"you're either left brained and good at math or right brained and good at art" joke's on you, i suck at both

Watching this provoked a flood of thought. The first of which is the fact that I am ambidextrous and can use one hand or the other in almost everything. The second is how flexible our brains can be...my mother was in a car accident that killed her first boyfriend (and why I hate drunk drivers...he got away with a few scratches!) and landed her in a coma for six months with a broken neck. She wasn't supposed to live or if she did, she'd be a lifelong vegetable with no movement below the neck for the rest of her life. She woke up, and a few years later married and had four kids. The one major effect of her trauma was lifelong amnesia...she didn't know who she was or who anyone was; an issue that persists to this day. She had to restart from the ground up. Over the decades, she did remember a few bits and pieces of her childhood, but not much else. Nobody realizes what the friendly woman who serves them their meal or who takes care of their kids at the local Y has been through. She even only has a few body scars. I was talking about this with her recently and mused that the reason she survived what nobody should have survived was because of her youth at the time. Her shattered body healed. Her brain was still young and malleable enough to create new connections around the damage, and let her relearn how to walk, talk, and basically create a new identity in the process.

I always click a SciShow video and listen to it like a podcast while doing something else, normally they're about 6 minutes long, little did I realise I clicked on a 24 minute video, lol

6:20 for absolutely hilarious spazzy Hank XD

Q: Why do they never serve beer at a math party? A: Because you can't drink and derive...

keep doing these debunking videos. we need it now more than ever.

Benign paroxysmol positional vertigo is when the crystals are knocked out. The experience I had was terrifying and I ended up in the ER and had to sleep with my head above my heart and straight for a month after they did a special maneuver to throw the crystals back where they belong, which was also terrifying. I feel for people who have vertigo as a disorder outright. It's not fun to feel like you are spinning when you are still. Direction and position of yourself in a space is underrated.

Back in junior High School my biology teacher believed that we actually use 10% of our brain. I told him he was wrong in repeatedly occasions, which always led me to detention and eventually I got expelled. I'd do it again, though.

6:22 Hank looses it

1) I wish I had entertaining teachers like Hank at school to make learning so much more fun and engaging. 2) I'm glad we didn't have teachers like Hank or I'd have been too distracted crushing on him.

6:19 was the funniest moment in my life

Samuel Morton was probably cheaping out on his portrait - 2:39 Fun fact: Hands in portraits usually had an additional cost due to them being so difficult to properly render. Hiding one or both hands lowered the cost of a portrait considerably.

scishow: answering questions so we can sit on our asses and eat food.

I have to use large portions of my brain to be able to find my phone.

Can we crowdfund uploading Hank to a neural network? It doesn't even have to be perfect. I can still be very happy with 75% of Hank Green.

Brains made this video.

I'd love a compilation on how our brains respond to music (as in the case of Clive Wearing, for example, whose memory of music learned before his illness was unimpaired), and on medical conditions that affect that, such as musical anhedonia or Williams Syndrome.

The thing I like about SciShow is that the presenters aren't just talking heads. They seem to actually know and understand what they are talking about... 👍

I just noticed that you called this a "smörgåsbord" but it's really more like a 5 course meal where each course is carefully chosen to build on the last and satisfy nutrition en toto.

Hank is so funny and cute - my ultimate crush!

6:24 This is the most I’ve ever identified with Hank Green.

Nice Dwarf fortress shirt!

Hank is my favourite

I was subject to a strong concussion, it caused amnesia around the moment of impact and damage, my perspective of my own body, like I could barely feel my body and it felt more like walking through a dream, comprehensive abilities, reading and math, I'm a natural speedreader, and I finished the entire harry potter series in 3 months in elementary school, after the concussion it felt weird to think about math, un comfortable and difficult, when doing it I felt something fundamentally change

Had to pause to finish my hysterical laughter when you pointed out that we don't use all our muscles at once, so I wouldn't miss anything. Thank you for your videos. Makes it a lot easier to learn something new for that day.

Well, about the 10% of brain usage. People don't believe that we use 10% of our physical brain. The idea is more like "we use all our brain, but at 10% efficiency" as in "if we controlled 100% of our brain, we could do amazing things, but have control over 10% only". It's like a computer : you use every component in it while you do basic stuff, but it's working at low ram and memory usage. But when you do something like video editing, gaming, or whatever awesome thing you'd wanna do with a computer, suddenly, it goes up to almost 100%. Do you guys agree with my view on the subject ? I'm not saying I believe that stuff, only that I understand it that way.

6:18 omg I have had the WORST day today and that just made me laugh into tears thanks hank and scishow! 🤣

Does equilibrioception have anything to do with why you get nauseous when playing VR games? Unlike vertigo, where the hair cells are sending conflicting signals, would it be the eyes sending conflicting signals? Your eyes think you're on a roller coaster, or in a space ship but your brain isn't getting corresponding signals from other parts of the body like the vestibular system. Am I on the right track here?

oh man, way to go, so much more info in these "5 things" type videos when the concepts interconnect and elucidate each other.

I love Hank's commentary. New to the channel and I'm here to stay.

Is Hank on drugs in the second clip?

5 things you should know about your brain in *24 whole MINUTES!*

with the whole left brain right brain thing it didn't make sense to me, I'm both an artist and a pretty good one I might add, and I'm also someone who specializes in math and science.when someone would tell me whether I'm left-brained or right-brained, they would always be confused because I always showed signs of both. I'm glad that you cleared this up.

In 1973 I saw a psycholoy video that showd that cells in the Cerebellum actually chagned shape as new physical skills Neural placticity is used in stroke recovery treatment, which is why we try to get the patient into treatment ASAP

I still haven't figured out where my dad's face went when he put it behind the door...

Functional Brain Imaging.... FBI... *House gets raided by crazy SWATs*

Great video! Thanks for posting it!

this channel has likely forged more new synaptic connections for me than all of my schooling, personally its a much more effective way for me to learn

There are 10 kinds of people in the world: those who understand binary and those who don't.

Saw VSauce and Adam Savage's Brain Candy last night. 10/10

A few years ago I was having an MRI done to investigate whether my suffering from tinnitus was being caused by a tumour or not. It wasn't, but in the process of doing the MRI they found a lesion called a lacune, which is basically a hole in your brain that forms when part of it dies from ischemia, or having bloodflow blocked off to it due to a stroke afterwhich the body absorbs the dead tissue, leaving a hole. I had no idea I even had a stroke. It was completely unrelated to the tinnitus. Apparently it's pretty common for people to suffer strokes and not even realize it. Enough that there's a term for it, silent strokes. For those who are curious, the lesion was a 7mm lacune in my lentiform nucleus.

This is awesome. Thanks Hank!

It's so nice to get these science snippets: short & sweet, but not overly simplistic. This one I have some insight in, since I had a right hemisphere stroke, confirmed by various scans. Thus, they have pictures proving I'm certifiably NOT in my right mind; but the docs were quick t assure me that there was plenty left [cue rimshot.] When I first got that joke out, my neurologist loved it. In this sort of injury, if you don't keep looking on the bright side, you can get dreadfully depressed as there are so *many* depressing things to focus on Of course I'm researching recovery as best I can. being who i am. This was "click-bait" for me.

I love neurology

Always interesting, thanks.

Hank, you consistently give me a good laugh. It's a gift, thank you.

I once thought jelly were fish brains Wbu?

The whole only using 10 percent of our brain, maybe they meant consciously. Imagine if you could, in theory, access your hippocampus, and pull up/edit any memory you wanted to at will. Maybe tell direct your brain to focus the frontal lobe, giving you insane reasoning and problem solving skills. Damn, this is some good weed.

on the title alone I thumbs up. I have been stuck in here for almost 36 years and haven't a clue about its operation.

Ahh, brings back memories from my neuropsychology lessons ;) Thanks for the video, keep up the good work! Cheers;)

Thank you for educating with-out insulting my intelligence.

4:30 Of course you'd say that! You have the brainpan of a stagecoach tilter!

Thank you for posting this compilation. I found it a helpful summary.

I love this videos' format.

I saw the thumbnail as broccoli

Yay brains

more compliations like this please!

6:23 many years later still cracks me up

I always thought that the 10% claim wasn't about the physical space of the brain that we use, but the possible computing power that it possessed? So not that certain regions are useless, but that it might be possible to do more or do things faster with our brain? Anyway I know there's no real evidence to back this up. :-)

I know mine is fcked up. What about yours ?

I feel like Hank was the nerd in class who would let you copy from his homework and would get invited to all the parties.I say nerd in the most loving way.❤

Awesome video thank you!

Brain and brain! What is brain?!

Science.

THANK YOU!!!! I dont know how many times I've heard that we only use 10% of our brain and I knew it was wrong, I knew it! It just makes no sense.

Thumbed up because i laughed so hard when you used all of your muscles at once! Do it again, do it again!!

I have a question for you guys, why do some birds move their heads when walking?

EVERY MUSCLE AT THE SAME TIME🦍🤣😂

I just gotta say, I recently discovered that is becoming a *thing* among some of the crazier horse people to 'read' their horses' personality in the swirls of hair on their forehead - how high, how low, what side they are on if not centered, if there's more than one.... and it is seriously just phrenology for horses and I can't believe this is becoming a new thing that people are taking seriously in the modern age.

Amazing one!👏

ayy dwarf fortress T-shirt

life has no meaning we are basically a giant molecule

really love the psychology content!

I understood 10% in terms of efficiency and doing productive work

Thing #6: Your brain can turn on you, fast, hard, and with no warning or consent. And it can stay that way, or get better, irregardless of what you do or don't do. Sleep tight, kids! (Wish I'd been warned when I was younger, anyway...)

Suspiciously much of Hank in this compilation. I have a feeling he's leaving. I hope I'm wrong.

Yay! Another video with my two favourite SciShow hosts :D

Thank you for the imformative videos. It'd be awesome if we had a channel dedicated to describing how certain meds work starring Hank.

Does playing video games have a negativ effect on the structure of the brain? Many people seem to think so. As well as watching pornography.

Subjective validation ... kinda reminds me of religion

I get a strange feeling watching and listening to this and realising my brain is processing information about itself!

I LOVE SciShow :)

6:24 whoever edited this is a genius.

You should do more such videos where you take a topic and compile videos related to them.

I just realized what Michael's shirt depicts, and I am extremely pleased

My partner worked in Sperry's lab at Caltech during college. Said it was life-changing seeing the amazing capacity of brains to adjust.

Tonight I was dreaming about how my brain makes connections while I am sleeping told by a voice mix of my two favourite hosts Hank Green and Michael Aranda. I guess I watched too much SciShow lately. It follows me into my dreams now. Is there such a thing as too much SciShow? Can I die from too much SciShow? HAHA. Thanks all you guyes for making the world a more intelligent and understanding world. Keep up that great work.

Fun fact: those little ear crystals can sometimes get knocked out of place due to head trauma and can be a cause of dizziness and/or loss of balance sometimes associated with concussions

A clip show, my favourite!

I thought for sure that you were going to at least bring up our "Sense Of Time" as well