Hemispatial Neglect: When Half Your World Disappears 

Imagine only watching half of this 3:21 video.

@@leechyfruit4464 or when the words are only on the left side of the screen

Haha that's

Lol actually is have visio spalatial neglect from an MS attack (basically mini strokes) I see out of both eyes but only my left side perceives details suck as depth perception and object permanence. Actually makes me legally blind, BUT I do hold the phone to my left side to watch RU-vid lol

Hii. That's me

Coldbrew wow it’s almost like the distinction between humans & animals is based entirely on emotional, religious notions that any other species would feel if they were in our shoes 🤔🤔🤔🤔🤔🤔🤔🤔🤔🤔🧐🧐🧐🧐🧐🧐🧐🧐🧐🧐🧐🧐🧐🧐🧐🧐🧐🧐🧐🧐🧐🧐🧐🧐🧐

UncleBibby your comment makes no sense

@@entertainmentinc9735 He's saying that, we and all other multi cellular organisms on Earth are pretty much the same. Except we as humans have developed a natural bias that we're somehow more special than any other animal. Which is true to the extent that most animals can't exactly build rockets but I'm sure you get the point now.

Hmmmm I don't think this is related. The point they bring up here is in humans there's asymetry of function: as you drift to sleep you always lose attention on your left side before your right. And they also described that the right half of your brain is more important for attention than the left half. But with those animals (I think) they alternate which half of their brain they sleep with, suggesting no assymetry. So there's not really any relation to humans to be made here.

Blindsight.

Or people who can only remember people they don't see. They recognize a person based on their voice but when the person is standing in front of them they are not able to recognize that person. Another interesting (and my absolute nightmare) is "locked-in syndrome" where you are literally trapped inside your body. It's like sleep paralysis, but you are not sleeping...

Even when catatonic they can catch a ball that is tossed to them

The brain is so vastly complex. SO vastly complex. Neuroscience haven't even scratched the surface of how that little wrinkly fella works. In fact, I don't think medicine was really MEANT to understand how the brain works.

Is that something that happens a lot?

@@RAFMnBgaming Typically it's only done in severe cases of epilepsy. It stops the seizure activity from passing from one hemisphere to the other. That way the damage is limited. Very rare.

@@RAFMnBgaming look up bicameral mind, its pretty interesting

@@RAFMnBgaming It's a reference to a study which got a Nobel prize, also being known as Sperry's research. Basically it demonstrated that there exists lateralisation between the right and left hemisphere. So basically, they differ in function. As for a corpus callosotomy, it's when you cut the corpus callosum (the membrane between your right and left hemisphere) in half. Effectively separating the two hemispheres and not allowing them to communicate.

sounds like that episode of House M.D. where one of a patient's arms seemingly has a mind of its own, because of a similar brain surgery

Omg, I totally forgot that book existed! Thanks for reminding me of it's name

Since I got hit by a car in 94 at 19 years old I don't interpret the information coming from my left side as strongly despite being left handed. (If I touch my hands or feet ect. together I have a stronger tactile feedback on my right. Similarly I primarily see with my right eye. I notice when wearing headphones that I hear in stereo but if I use only the left ear it becomes almost like screaming into my brain instead of music. When tested for sensitivity both sides are equally responsive but my brain interprets input from my left side as deminihed . Like turning my car stereo balance to 3/7 instead of 5/5. Now also extremely lethargic with no expectations for the medical profession to help

Migraine?

that is freakyy. Glad youve recovered but did u make any progress in finding what happend? the mri showing u lost the left hemisphere is just insane to me...do present mri show u have ur left hemisphere back?

what

@@rickjames5998 it's a JoJo reference

Yeah, but they think they're driving a motorcycle

No, with a neglect you basically lose your right to participate in any type of traffic for the rest of your life.

They can't push a shopping cart around a grocery store, or walk down a corridor, or navigate through a doorway..

@@Silkendrum This is true of most people that have had strokes. But 2:33

@@grimtygranule5125 - My late husband had a right parietal oligodendroglioma. He lost the left side of his world suddenly, shortly after his second debulking surgery. He woke me in the middle of the night very frightened, because "there's someone else in the bed". He pointed to his left arm, and whispered, "that's his arm!" In the morning, he came out of the shower with his robe only on his right side, the left trailing on the floor behind him. When he tried to put his pants on, he put them only on his right leg, and then couldn't figure out why he couldn't pull them up. He was very intelligent and quickly figured things out, but understanding didn't make things easier. For example, when you go through a doorway, you allow for the width of your body, but when the left side of your body no longer exists and you center only the right side, you crash the left side into the door frame. I couldn't leave him home alone, so took him with me when I went to the grocery store, and that was a bumper-car horror show. (At first he could still walk and use his left arm, even though he didn't seem to be aware what it was doing, but that disappeared after a few weeks. He had to relearn how to walk, which was amazing.) When he read a book or magazine, he read only the right pages. If there were two columns on the page, he read only the right column. The REALLY weird part was that if there was a double word within a sentence, like "meanwhile", he registered only the right part of the word ("while") and apparently his brain simply threw away the left half. That blew our minds. Obviously at some level, he was aware of the left, but his brain was incapable of integrating it. Like he HAD to ignore it. He was a chemist, a natural scientist, and we set up a lot of experiments to test the effects. I think he actually had fun with it at first, until it got scary. But, having seen him with a grocery cart running down people and crashing into shelves, there's NO WAY he could possibly drive a car. The left side of the world simply didn't have a reality.

Literally though

I was looking through the comments just for the jojo reference

Right? I wanted to see some confrontations, see people be notified of their neglected side, see how they process that consciously

@@snozzmcberry2366 sounds like we gotta go out there and find people ourselves and antagonize them.

They would probably say "I don't know/I don't remember" if they just are unable to process the other side

Austin Hibdon these damn neurologically-ill jerks, trottin’ around with bodies that force them to perceive reality differently than us... they stomp on all our criticisms of post-modernism just by existing!!! if we’re gonna hold on to the notion that there’s only one objective truth, we gotta get rid of’m, right??? (hides police-issued emergency contact card behind my back that says i have autism, tourettes syndrome, OCD and ADHD-inattentive type)

No evidence, but I suppose they would believe that they had indeed mentioned it (even though they didn't).

Oh I would love an episode like that too! I feel like it's something people don't understand super well and get worried about needlessly. I spoke to a guy who thought he has Aphantasia but in reality he just wasn't remembering things in as much detail as he thought he was supposed to. SciShow, we need another brain compilation!

@@noonespecial9233 I think most people don't "see" things vividly, that's hallucinating, but rather a clear idea that they can describe

@@MsAwesomeify yeah, that's what my friend was confused about I think. Like he thought you could close your eyes and recall a perfect exact image of anything, like everyone had a photographic memory or something. Obvs not the case lol

Aphantasia TED talk, do a search. very interesting.

I want to see a video on this because a lot of clarity has been tarnished with the recent popularity of this I can summon up an item, I can zoom in, zoom out, rotate it, conceive of every minute detail, including physical properties and interactions, but I do not see anything visually. Nobody is explaining that seeing with your "minds eye" doesn't LOOK LIKE seeing with your eyes.

That's the RU-vid robot reading your mind.

eeach yeah it’s the RU-vid recommendation algorithm replacing the next video you scroll to with one with similar search tags to one you recently saw that you either liked, shared on social media, watched the majority of, watched for a significant amount of real-world time or any combination thereof

TheRealWarrior0 Don’t look now, but there’s someone three seats to your payth who just started a facetime call with Emperor Elvis of the Tupac/Rasputin pangalactic alliance

Woah. This is my favourite comment of the month. It's untestability is on par with religion :O

TheRABIDdude don’t let the paythsi ders know that you know, dude!!!!!!!!!!!!!

ɐɐɐɐɐɐnnnƃƃɥɥɥɥ!!!!!

In the show, Hannibal infected Will with a type of encephalitis. The doctor marked the progression of the condition with the tests.. : (

Thanks for sharing your story

oh man. That would be fun to write. A new twist on two face's character.

I mean i guess a fictional character can have anything even if it’s not possible irl lol

@@bonhll8070 Sure, but the more layers of reality you can slap on them, the more dimensions they feel like they have.

Haha, so true 😅

That procedure is for extreme epilepsy. There's a few mini documentaries on it if you can find them. Really fascinating.

To make your search easier, the procedure is called hemispherectomy. There's also a related procedure that is somewhat more common, corpus callosotomy, where the corpus callosum, the "bridge" connecting the two hemispheres of the brain, is partially or completely severed, meaning the two hemispheres can't "talk" to each other.

very similar.

That’s for epilepsy. My dad is a psychiatrist and he actually has a really funny story involving that. A woman sent their daughter to him because the daughter walked with a limp, and she was convinced she was faking it. My dad checked the daughter’s medical history and discovered that she had half of her brain removed during early childhood. It turned out she really was faking it. She only did it when her mother was in the room! Otherwise, she was completely fine. The half of her brain had been removed so early in childhood that her brain was able to re-wire itself to function normally.

I'm sure there were, but seeing as severing the corpus callosum hasn't been used to treat epilepsy for quite a long time, I doubt there is documentation of it outside of the (now deceased) patients medical charts.

My sinuses are constantly filling on the side I lay on, and affects the hearing in the down ear, as soon as I roll over, it switches.

This is a very good point. It's a symptom of the guilt and shame that is foundational in how we (as society) view those with challenges and who are different. It's insidious and toxic, because it is subtle, and pervasive. Those who are taught and use this type of terminology are very frequently innocent themselves of choosing judgementalness. Yet the terminology nurtures and delivers judgement, even while the people themselves may very well be innocent of actually choosing it. Being aware of it, and bringing awareness of it to others, is the only effective way I know of to begin to rectify this situation. And to do so without in turn becoming or delivering judgement? 🤯🤪🤯 So, thanks.😊 I'm a wordy one, and can't help it. But I guess the short version is, indeed - "Yup. Thanks!" 🤣🤣 Thanks for speaking up!🥰

As a southpaw, I was wondering about this, too.

+1

I had to focus entirely on what I was saying rather than what was real

Dang! And GOOD LUCK!! Years ago, my spouse was able to be a part of a study for a heart condition. I was really grateful he had the actual procedure. My dad and step-mom were both in a study for Lyme disease. About 3 months in, it was pretty clear one had gotten the preventive and the other was part of "control". Every person that participates in studies like these, helps other people down the line. Thank you.🥰🥰 I truly hope you get actual, real benefits yourself from participating, and SOON! Take care🌞🌅

Yeah my brain was damaged in the right-front lobe, far from the inferior parietal lobes, according to the illustration in the video.