We Don’t Know Why Astronauts Get Motion Sick
ฝัง
- เผยแพร่เมื่อ 7 มิ.ย. 2024
- A majority of modern astronauts experience any one of a suite of symptoms scientists collectively call Space Motion Sickness, or SMS. But despite knowing about it for nearly as long as humans have gone into space, we still don't know exactly what causes it, or how to predict which astronauts might lose their lunch.
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Sources:
pubmed.ncbi.nlm.nih.gov/16935...
science.nasa.gov/science-news...
www.sciencedaily.com/releases...
www.smithsonianmag.com/air-sp...
www.frontiersin.org/articles/...
www.ncbi.nlm.nih.gov/pmc/arti...
www.ncbi.nlm.nih.gov/books/NB...
polarisprogram.com/science-re...
Image Sources:
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• Spacewalk at the Inter...
images.nasa.gov/details-iss06...
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commons.wikimedia.org/wiki/Fi...
commons.wikimedia.org/wiki/Fi...
www.gettyimages.com/detail/il...
commons.wikimedia.org/wiki/Fi...
www.gettyimages.com/detail/il...
• Friendship 7
images.nasa.gov/details-s66-4...
commons.wikimedia.org/wiki/Fi...
www.gettyimages.com/detail/il...
commons.wikimedia.org/wiki/Fi...
commons.wikimedia.org/wiki/Fi...
www.gettyimages.com/detail/ph...
images.nasa.gov/details-51b-1...
But this channel is my favourite of sci shows 😭
Hanks gotta buy another yacht. Cutting expenses, first Sci show psych & now Sci show space. By putting everything in one channel each topic can publish less often while still appearing as an active channel that regularly puts out content.
@@michaelmayhem350 You don't know anything.
@@michaelmayhem350 Yeah, they are probably going to go from two space videos per week to 2 to 4 per month.
@@Izandaia denial?
@@Izandaia hank doesn't have a yacht let alone "another yacht". Must be your first day on the internet. Which makes it ironic that you say I don't know anything. At least I know what sarcasm is...
I remember when the Sci show first branched off into its various flavors. Has it been so long? Well, as long as we still get to see our favorite faces and get regular space news and information, I'll always be satisfied. Thanks for all of the hard work!
Me too bye Psych, bye Space 😢
😢 😭
Seems like it was only a little while ago that they split... can't believe it was nearly a decade
I know it doesn't change the amount of content for Sci show space(I hope), but I am still sad to see it go. Sci show space was my favorite from the team.
This is the last SciShow Space video on this channel?? I'm glad to have here to witness it so soon after it was uploaded. Looking forward to seeing the hosts on the main SciShow channel continuing their journey to teach us wonderful space facts and share fascinating space news 🖖
literally been subscribed to this channel as long as I can remember being on youtube and while I consider myself young not everyone would agree...
The point being I am rather sad to see this channel close down. Even if it is essentially just integrating with another channel I have been subscribed to for just as long... :/
@Patrick Hudson likely. He has stupid rants on his personal channels all mostly political in nature.
Why I avoid watching the main channel. Get enough woke crap everyday. Science is truth and alot of what he states as factual, is indeed conjecture.
@@Marin3r101 anything specific or is that just how you feel?
@@Marin3r101 "woke crap" we get it, you're racist. You're not welcome here.
@Patrick Hudson Scishow Space has its own dedicated presenters, with Hank only showing up from time to time. No, there's actually been a bunch of YT channels consolidating recently (another one this week was TLDR) so this is likely a YT-wide thing
awww. well i hope the amount of the space videos doesn't slow down much. and hopefully this will help boost the viewership/reach of the main channel.
What I liked about Sci Show Space was that it collected the space stuff in one spot. I could subscribe and not have clutter of other science stuff I wasn't interested in my feed.
And now it's gone.
Ditto. I'm not interested in the other SciShow content, just the space stuff.
Aw man your getting rid of scishow space too:( and so soon after scishow psychology. Sad times but glad it's continuing on the main channel
This channel has 1.44 million subscribers and they are just going to stop using it? Wow
@@calvinkatt662 the main channel has 7.3m, so it kinda makes sense to put it somewhere it'll get the most attention
Sci show psychology is a joke....most of the topics seem to be pseudo sciences.
I'm going to miss scishow space
I remember when SciShow space broke off of SciShow T-T
Does this mean episodes will come more often? I don't mind the two channels I enjoy them both. But if they will become one, it would be nice to see a extra video or two each week. It's nice to learn about the world and universe, especially new things I'm not in the loop about.
^^
3. Psych was canned as well.
If you use Virtual reality head sets for VR games, there is a rating for games that may cause motion sickness such as roller coaster rides or ISS simulator. Your eyes are telling you one thing and your vestibular system is telling you something else and you can become quite sick. I think that subjecting astronauts to such games would be a way to know who is subject to motion sickness or not. And it lends weight to the sight V vestibular system hypothesis.
In ordinary games aswell. When it has a low FOV
space dizzies sound a lot like VR dizzies. takes a few days to get over the motion sickness of playing VR also. interesting to think it could be ear crystals that cause such a difficult transition on the perception of movement in uniquely different environments than we typically need to make our way through.
I love this channel! Thank you for amazing content for the past nine years! I’ll be looking forward to seeing more space stuff on the main channel!
Goodbye SciShow Space! I'm glad that you guys will still be making content on the main SciShow channel though!
I remember hearing about tests involving simulators which showed a video feed that differed from the motion of the simulator, and that seemed to cause the greatest motion sickness. The otolith asymmetry hypothesis seems promising
This is why motion sickness is so prevalent even among experienced fighter pilots (let alone us regular folk) when they use simulators where the generated motion doesn't exactly match with the visuals. Doesn't matter if it's a professional flight sim, the newest VR ride at an amusement park, or whatever. I know that I'm prone to motion sickness anyway, but those rides, my god... I'll be throwing up within minutes.
Sad to hear the move, as there are fewer quality SpaceSci specific channels. Thank goodness PBS SpaceTime will still hold that beachhead!
If the content quality remains the same, does the specific channel matter? The only downside I can think of is for viewers highly focused on space science who will now have to scan the main channel for specific content. Is there another downside? Does anyone know the motivation to merge channels? The Algorithm?
I watch the channels collectively not paying attention to which channel I am on, but this will probably confuse a lot of not-regular viewers.
Sea sickness is definitely a "thing", which seems related to SMS. The one thing that I noticed "water world" got *right* was "land sickness". After being on the water a few weeks, sailors definitely can get nausea from the world NOT moving constantly.
Tis is a total bummer. I look forward eagerly to SciShow Space episodes coming out and this will leave a big hole in my viewing pleasure. Perhaps a final farewell retrospective episode should be aired?
A genuine thank you to everyone involved in the SciShow Space page and content, see you next time on SciShow!
Thank you for wonderful years! I've been and will continue to be a loyal watcher.
Thank you guys for getting me into learning more about space your the reason I got the highest grade in my faith grade school in my science class sure it was a long time ago but hey why not
As well as many year other videos you've uploaded over the years
So thanks Sci Show
I remember when they first split up all the scishow topics between different channels. Sad to see space get the short end of the stick :C
A few years back they split the patreons and I felt bad because I could only support one, so I stayed with the main channel even though I liked both. Now they are combining the two channels, so I at least feel like I'll be giving Space the love it deserves again. But I wonder how they'll handle it on Patreon. In any case, my support at the main channel will continue.
I see a number of people, with too many channels. For the most part, consolidation makes sense, at least to me. Keep up the good work!
Bring this channel back please. Was my go to for space news :(
Great idea!
Good thong is SciShow has more subscribers, mesming space related stuff will be heard and watched by more people!
o7 ... SciShow Space, you will be missed. You were one of my favorite channels. I hope to see a revival of you soon.
HANK! BRING THIS CHANNEL BACK TO LIFE!!!!!!
Are y’all gonna fold SciShow Pee back into the main channel too?
...dang, I just subscribed last week.
But didn't you branch off this channel specifically bc space was so popular? I'm sad to see it go ive been subscribed for these 9 years but glad I won't be losing content bc im already subscribed to the main channel and have been for over 10 years! I look forward to your new content back on your og home channel!
Wow and I just recently subscribed
It's interesting how incredibly effective atropine is for this particular type of motion sickness
😭 first Psych and now Space, SciShow don't leave us 😭
Gonna miss this Channel.
I remember when SciShow branched out into the multiple channels. I hope the re-consolidation means we still get the same amount of content as the multi-channel platform and that everything is otherwise still well with the SciShow teams. I'll still look forward to more from the main channel and all the hosts!
And yet again you break my heart. Why? Concentrating it all into Scishow just saddens me.
When are you coming back? We missed you guys!
But pilots get sensory conflicts quite often in instrument conditions. In fact that’s why ignoring your senses and focusing on what the instruments tell you is a large part of the instrument rating, but we typically don’t get feeling sick - jus sometimes disoriented.
Scott Kelly reported at first that he was fine returning from his year on the space station, although weak -- despite having faithfully followed exercise routines. Then the 3rd day he woke up his ankles were the size of his thighs.
It appears his body had "forgotten" how to move liquids around. Got worse and worse and took him over a year to recover ... and was painful. This guy had done some very tough jobs for the American military, but near the end he says something like "... if America still needs hard work done they can ask someone else."
"Endurance" is his book about his experiences in the space station. Great read.
I haven't seen the video yet but my assumption is that due to the inner ear having evolved in an reference frame in constant motion(acceleration) and now they're occupying a reference frame without constant acceleration(in space away from larger accelerating bodies) their ears have to compensate for this lack of being in an constant acceleration and it is this compensation that in turn causes a feeling of motion sickness.
Kind of like a reverse motion sickness, due to the balance center in our ears needing to be evolved to be stable and centered like a bubble level in constant acceleration due to living on the surface of the revolving earth, the lack of this acceleration is throwing our sense of motion/balance off.
As a cruising sailor, it's common for long-distance cruisers starting out on a long voyage to get sick as a dog the first few days of every trip. Even as short-distance cruisers, Neither my wife nor I usually get sick on a day-long sail, but after being ON the boat for a weekend or week or month, when we get back to our slip, I get a little land-sick while I'm taking that luxurious shower. Mostly it's a bit like having drunk too much, the room spinning mostly
Well, we have symptoms on the ground which is also not really known why it happens. MDD is one, which is basically they the adaptation when changing reference frames is broken and sort of never works. So after a cruise or flight, the dizziness never subsides or very slowly.
You better be keeping Savannah! I love them 💜
+++ Loved this channel
Robert Heinlein (and probably other SF writers) predicted that space sickness would be a thing before anyone had flown in space.
Heinlein was no stranger to illness, he got booted out of the navy for TB.
I miss this channel!
Motion sickness is common in orbit free fall. Having a rotating section with centrifugal gravity may control (or worsen) space motion sickness. We need gravity for our health. Eventually, there will be rotating space ships and space stations with centrifugal force artificial gravity. Thanks.
I suspect some astronauts may experience something similar to my friend as the trip into space is likely tough on the body and weightlessness likely shifts some of the internals in their spine making the tendons and muscles in the body tense and relax a little differently. A close friend suffered a neck injury a few years ago and was extremely dizzy for two solid years afterward. He still has random bouts of dizziness and often complains of constant stiffness, tendon and/or muscle pain in his neck. He said that it felt and sounded like a loud pop just underneath his skull where the spine connects and has suffered ever since. The doctors he went to supposedly couldn't find anything wrong with his vestibular system and was told they couldn't do anything for him. He turned to massage therapy after a car accident and mentioned that, for him, massage in the head, back, and neck area was just about the only thing that helped ease the dizziness. It may or may not be relevant, but if someone is looking for answers about unexplained vertigo unrelated to the inner ear, the spine and neck area, and maybe how they connect to the head, may be an alternative avenue of study or focus.
Can you do a video of all the space start-up launch companies and what they are up to?
See you there!!
5:38 Talking about SpaceX and the Polaris Dawn mission(s), which will use a Crew Dragon launched from a Falcon 9, but uses an image of NASA's Artemis I launch using an Orion crew vehicle on an SLS rocket . . .
Classy.
Honestly kinda cool to have SciShow pretty much all together again. Makes me feel young lol.
I’m glad hank did the last episode rip sci show space
Bruh why, this was perfect to binge watch
Been subscribed to this channel since launch this is so sad
Just gotta get my name on the last SciShow Space video
As someone who plays a lot of VR and was lucky enough to never feel motion sick, I often wonder why I am so lucky compared to others who can barely go a few seconds without waves of nausa. Someone once suggested to me that it was how informed I was. I KNEW VR sickness was a possibility well before I tried VR. My knowledge of it may have lessened the symptoms. Who knows. But it fascinates me.
Was hoping SciShow Space wouldn't get axed as well after you axed SciShow Psyc, sad to see it go.
Will the frequency of uploads remain the same on SciShow or will it increase to make up for the missing content here?
would be interesting if there's some kind of therapy to change the size of the "ear stones" to have similar sized stones in both ears if this would have an effect of space motion sickness
i wonder if this has some similarities with how people with vr equipment feel dizzy at times. I heard something in relations to the whole ear thing.
I love the irony of that cartoon depiction of an astronaut seeing stars ... while out in space.
Sea legs, when sailing on the sea....
I'm never sea sick when out sailing, but when coming back ashore after several days at sea, it can take days of feeling woozy before my land legs return. I'd be sitting absolutely still, and the room is gently slopping back and forth around me.
Vestibular disturbances...
Saying good bye to SS Space is so sad! Thanks for all those ears! I'm gonna stay tuned on the main channel.
RIP big homie sci show space
Ha! thats Funny! didnt you make this branch of sci show because you had too many sapce videos on your main channel? I guess space is sexy enough to take front and center stage again! yay! :P
I don't understand why some people getting SMS and some people not getting it is a problem for the sensory conflict hypothesis. After all, some people get motion sick reading in a car and some don't - or is it that sensory conflict is also not a complete explanation for why people get sick reading in cars?
My hypothesis for if it happened more reliable would have been that the vestibular system would not be able to tell which direction you are facing and moving, so you'd get dizzy. Turns out they looked into that.
Well, this blows dogs for quarters. I like the separation of the content.
4:20 if that holds true, it's crazy that the brain can just adapt like that!
3:25 What's happening is that the spinning around in "zero-g" causes some otoliths to become dislodged and float around in the inner ear, causing the astronauts to get a perpetual state of BPPV, and without gravity, they can't do Epley or other maneuvers to fix it. 🤢 This explains why it happens to some but not others.
a video on the 6 newly discovered galaxies??😭
3:10 I was wondering, why is there such a big difference in this effect. Most people I know cannot read at all in a car. But for me, unless it is a super rocky road/the driver accelerates (e.g. via turns at high speed) like crazy, I can read fine without any motion sickness at all.
Probably this is a difficult question to answer, but still, I'm curious.
So has this channel/show been discontinued?
Scishow: we don't know why astronaut got motion sick.
Also astronaut: Go ISS 3000KM/s go
I prefer different channels. Good for when I just need some spaceness.
Aww, gonna miss my weekly space fix
I mean, strapping to the top of a missile and launching into zero gravity at crazy speeds then maybe staying there seems like the perfect recipe for nausea.
Bummer
Interesting... In December you said you were cutting back on Space videos, now you are consolidating to your main channel? This does not sound like the SciShow Space videos aren't doing very well.....
why did you guys stop making videos? It's been a year!
Guess I should go subscribe to SciShow... 😆
I think the move is a great idea because youtube's stupid Algorithms show me sci show but rarely sci show space so this means I am more likely to get them all :)
Not the SMS message I wanna get, for sure.
Neat
Scishow kids has 100000 subcribers
I think it's because there's no gravity holding down the brain and organs. When you get motion sick, the worst feeling is when there's lots of side-to-side movement, or acceleration and deceleration over and over. In both those scenarios, our organs shift around.
Thanks for these explanations.
I love this kind of stuff.. what if it's a bit of everything lol
"Eat peanut butter. It tastes the same going down as it does coming back up."
Sadly with Polaris -unlike NASA- the results will not be published to the public. Its one of the benefits of the public program vs. a private one.
I mean, we do. The vestibular system is mediated by fluid in the semicircular canals, and that gets confused in microgravity with the liquid not pooling at the bottom. Ok, I should watch the video now.
Well then...time to move to SciShow I guess!
Here's to the next years.
But isn't this kind of self explanatory? We can trick our brain into looking upside down (or rather stop correcting the upside down signal our brain gets) with special glasses.
After some days the brain shifts the image into the correct orientation and it will take days to retrain it AGAIN.
So I guess the last explanation makes the most sense.
We are simply accustomed to interpret certain signals a certain way and if that system is disrupted it will take some time to adjust.
It would fit the criteria of setting in for 3 days at the beginning and after the end of the zero G experience.
I mean, yes, it's self-explanatory insofar as we know that motion sickness is caused by a mismatch between the inner ear and visual signals. But that still doesn't explain what the precise mechanism is underlying it for SAS.
Even on earth there are three ways that motion sickness commonly occurs; firstly, as the video shows, your inner ear picks up motion but your eyes don't. Secondly, your eyes perceive movement, but your inner ear doesn't - such as while using VR headsets or even playing some video games. And thirdly, your eyes and inner ear BOTH pick up motion, but they don't match well enough. Sometimes that can be driving slowly down a rough road, gently rocking on a swing, or (my personal nemesis) flight/roller coaster simulator booths that move around on pistons but still don't match the visual movement well enough.
The last one is why the VR/simulator rides at amusement parks have the worst rate of motion sickness of pretty much any ride. I went onto a rollercoaster simulator and I was throwing up in less than five minutes, it was the worst thing I've ever experienced.
So yeah, we know why, at a basic level - but as the video clarified, losing 3 days because you can't see straight or stop puking (or the meds are knocking you out) and then another 3 when you land again isn't ideal. So it would be more useful if they can figure out the exact mechanism, and hence predict who is most likely to struggle, and find more effective ways to prevent or treat it.
This might be a stupid question but hey, it only takes asking one stupid question once to know the answer forever. Why do Astronauts float in space? Like I know that it's all "Zero-G" and that the ISS is really just falling towards the Earth and the curve of the Earth allows them to continue that perpetual falling. I get that, but why do they float? I mean if you think about gravity and think about it in terms of, oh the closer I am to this object with this massive gravity; the more intense the pull will be, then how do we still have the moon locked on to us in its own orbit? If the Astronauts are floating that close to Earth, why isn't the moon just going pew into space? Does the gravity differ? Is there something I'm missing? Is it some misunderstanding I have of gravity? I'm really curious so if anyone could answer that would be awesome, thanks!
I don't get sea sick unless it's terrifying waves ECT but a week out to sea and then step foot on land and oooh I have to buckle up I have to shower have some libations and a bed!
I need a solution here on earth too. I wanna be able to play Racing games and similar in VR. Anything that doesnt have teleporting as movement is unplayavle to me.
I’ll volunteer for testing - no vestibular system here…
Otoliths interact with Magnetic Fields as well as Gravity. Human physiology is currently experiencing a myriad of adaptions in preparation for their potential Future as a Wandering Species (Spacefaring). Vestibular Sensory Seeking 'disorder' is an intermediary stage of Human otolith adaptation. Humans that are identified with this 'disorder' and the subsequent generations of their progeny will not experience Space motion sickness.