What is something you can sense that few-if-any people you know can sense? Literal answers only.

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[โ€“] 61 points 11 months ago (20 children)

I have a heart condition that I get an ECG (electro cardiogram) done for every 6 months or so. It's just an ultrasound on your heart. They always take mine from a bunch of different angles and a bunch of different types of pictures.

But I was recently in the hospital and told the technician that their machine was loud. She looked baffled. I told her I can hear the ultrasound and hers is the loudest I've encountered. Apparently I'm the only person she's ever done work on (or however to say that) that's been able to hear it.

So I guess that is my super power. Or I'm just autistic, as apparently many autists can hear very high pitched noises.

But the ultrasound is pretty cool. The frequencies and the pitch will change depending on what photo mode they're in. Like a doppler mode is all pewpewpewpewpew while the normal mode is all eeeeeeeeeeeee. Lol. It's hard to explain.

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  • [โ€“] 16 points 11 months ago (2 children)

    That's a wonderful superpower! I can hear cars or footsteps approaching before my friends realise them, but high-pitched electric mole traps and ticking clocks can be annoying. Listening to music with good hearing is like taking drugs though. You should check out well-mastered music, commonly going as audiophile music.

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  • [โ€“] 4 points 11 months ago (1 child)

    My friends have called me sensitive to everything. Apparently most people don't love walking through neighborhoods just to smell other people doing laundry? Hahahaha. I love it.

    I've wanted some really excellent headphones for a while now, but it's haven't yet been at a place/time where I can pull the trigger. It will definitely happen one day

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  • [โ€“] 2 points 11 months ago

    I got some pretty nice headphones a while back. Not the really high end ones or anything, but good enough that I can get lost in the shapes, textures, and sometimes colors of the different instruments. Like someone else said, it's a bit like being high.

    Cheap studio monitors are fun too because they really separate out the sounds. It can make me a little tired, listening to all that detail, but it's so fun.

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  • [โ€“] 12 points 11 months ago (8 children)

    Its seriously wild that you can do this!

    Apparently, ultrasound machines can use frequencies that start just higher than human hearing, 20kHz.

    Can you hear dog-whistles, bats, or other electronics?

    Get a hearing test and call Guiness (c:

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  • [โ€“] 5 points 11 months ago* (2 children)

    I hear bats, absolutely. I can hear electronics as well, and some are just so frustrating. I've never heard a dog whistle, as in I've literally never seen one in person, but there's a house near to me that has a warning thing when someone approaches their yard, probably to ward off dogs? But my god, it's loud and high. I try to avoid that route at all costs.

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  • [โ€“] 3 points 11 months ago (1 child)

    "I hear bats" - Astounding! 8]

    It would be very interesting to get a hearing test done. One which provides you with a chart of frequency against intensity perceivable. I'd check that they are equipped to go over 20kHz first.

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  • [โ€“] 2 points 11 months ago

    In the case of bats for me I think I feel the pulses of bats because it's quite powerful, more than hear it. It's probably undertone resonance or something.

    I haven't heard any for a while and my hearing is deteriorating but bat numbers collapsed and I haven't seen them either.

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  • [โ€“] 3 points 11 months ago (2 children)

    Off topic, but Iโ€™ve not seen that emoticon before (unusually left-facing too!) and itโ€™s adorable.

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  • [โ€“] 10 points 11 months ago (1 child)

    I was entirely confused for a moment- I think you might be getting an echocardiogram, rather than an electrocardiogram. If you could hear an electrocardiogram, there would be something seriously wrong with their machine- It's meant to be a passive electrical measurement. Echo on the other hand is exactly what you described, an ultrasound of the heart.

    I was actually thinking you might have a strong interoception, which is when people have an awareness of their own heartbeat signals- super rare but super cool.

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  • [โ€“] 9 points 11 months ago (1 child)

    Annoyed by the commonly imperceptible sound an ultrasound machine makes? Possibly autistic

    Facinated by how and why the machine works while it annoys you? Definitely autistic

    I joke but im exactly like this too lol.

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  • [โ€“] 7 points 11 months ago

    I had this exact experience and tried to ask the technician about it. She didn't understand what I was asking. I thought I was just explaining it poorly.

    Lemmy needs to stop trying to convince me I'm neurodivergent.

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  • [โ€“] 8 points 11 months ago (2 children)

    That's awesome! I can't hear ultrasounds, but I can hear electronics, which gets really annoying

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  • [โ€“] 6 points 11 months ago (1 child)

    Yeah me too. I think this is called "coil hum". I notice it with things like usb-c thunderbolt ports. Often you can swap a cable or something and it's resolved.

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  • [โ€“] 3 points 11 months ago

    I definitely can't hear high frequencies (I'm assuming due to ear infections as a child, feels mildly unfair that other people my age get to hear and understand conversations better but oh well) but coil whine is a thing for me as well.

    Had a router once that would whine depending on the network packet rate. My computer screen makes a noise when displaying large grids like a screen full of terminal text or a mostly blank spreadsheet. The led lights in my bathroom make a noise and I often turn them off while transacting my business. My Bluetooth headphones make similar noises depending on the connection state but that one is probably interference and not coil whine

    It happens at all frequencies. Although you don't need to be able to hear special frequencies for it, of course you'll hear it in more places if you have superlucg hearing ^^

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  • [โ€“] 39 points 11 months ago

    The fucking documentation for the libraries we program with, apparently. Everyone else at work either just vibecodes or goes "aw I don't know how to do that, it probably can't be done :c"

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  • [โ€“] 34 points 11 months ago* (11 children)

    I can smell your fabric softener, no matter how long ago you used it. Artificial perfumes of any kind just murder my sinuses. It suuuucks.

    I also can hear electronics, even just the lights, if that's all that's on. Maddening, because I can almost never find real silence. It's why I love camping.

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  • [โ€“] 12 points 11 months ago (2 children)

    I experience the first set of powers, and I hate it. Every detergent, shampoo, deodorant I use is "sensitive", "baby formula" or whatever.

    And a few years ago some deodorant company started using some I guess artificial compounds that just pushes the air out of my lungs, it's so bad. I can not only smell it, it digs into my forehead.

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  • [โ€“] 6 points 11 months ago (1 child)

    I get this with pretty much all perfumes, scented candles, tobacco smoke (oh god the tobacco smoke) and extinguished matches and candles.

    With some people I wonder how they can exist with so much perfume poured over themselves that I can't breathe while walking behind them. I just don't understand.

    An upside of being smell sensitive is that it helps with debugging electronics. Burnt parts smell very obvious, and I can even smell hot stuff like heatsinks.

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  • [โ€“] 5 points 11 months ago (4 children)

    Every time I say I hear electricity, people think I lie. But it makes noise! I hear my blood too.

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  • I wish you could try stuff beforehand in a quiet place to see if it's gonna bother you with annoying quiet noises. Unfortunately that's not really a thing. Luckily electronics has gotten better over time but a lot of stuff still does it, just usually less.

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  • [โ€“] 1 point 11 months ago (2 children)

    Can you do that thing where you flex some internal muscle and hear a loud rumbling that I assume is rushing blood? It's hard to explain. I think the muscle is related to the jaw, or maybe ear movement. It's not externally perceivable, but it's useful on an airplane.

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  • [โ€“] 2 points 11 months ago

    I've never been a big fragrance guy. When I found out about people like you, I decided to just go fragrance free. If it's not a big deal to me and it gives a few people headaches to be near me, might as well just not do it. There are some tangential benefits. My deodorant irritates my armpits less now. My hair oil used to irritate my skin if it got on my forehead. Now it doesn't.

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  • [โ€“] 2 points 11 months ago

    I've got one light in a room that makes a quiet whining noise when on, seemingly only after a minute or so (maybe after it warms up a bit). Thankfully I can just keep it off just fine, but occasionally I'll turn it on for a bit more brightness, and realise it's still on a while later by the annoying noise.

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  • [โ€“] 23 points 11 months ago (5 children)

    I can see lights flicker when others can't.

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  • [โ€“] 5 points 11 months ago (4 children)

    All lights flicker. Just mostly we can't perceive them.

    LED flicker is most noticeable tho. Incandescent the least.

    Fun fact. They flicker at similar frequencies (per light output/lumens) but the light drop off is more dramatic for LEDs so we perceive it more.

    People who are epileptic or prone to migraines usually are bothered more by LEDs.

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  • [โ€“] 3 points 11 months ago (2 children)

    All lights? Also battery-fed DC lights somehow?! I'm no expert but that seems strange

    I've caught a lot of lights and light-emitting displays flickering with the 980fps camera that's built into my phone (best thing since sliced bread for a nerd like me), but also quite many lights appear solid. I'd imagine few have such high-frequency electronics that it pulses well beyond 1 kHz. Otherwise the sensor should sometimes capture a frame during a low or a peak

    As an example, I was recently looking at car lights in Germany, expecting to see duty cycling in most modern ones, but the majority (2/3rds or so) were actually solid so far as I could tell. A few cars had a mixture of flickering and solid lights in seemingly the same fixture. All flickering ones were high frequency though, not like 50 Hz as grid-fed lights do but much more. I didn't bother with ffmpeg and counting frames but I estimated on the order of 250 Hz for one of them

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  • [โ€“] 1 point 11 months ago (1 child)

    Yes all lights flicker. That frequency number is how fast it flickers.

    There has been attempts to reduce flicker.

    It has to do with how electricity works and the filament in the bulb. I honestly don't know the details except that some tech has reduced it in LEDs. They say it no longer has flicker but it's still there. Just reduced.

    I'm going to post another image relevant to this.

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  • [โ€“] 20 points 11 months ago (1 child)

    I used to operate a drill rig for taking soil and water samples. I learned to read all the utility markings and to spot the telltale markings of previous drill work. I can walk around an urban area and tell you where all the gas stations and drycleaners used to be just based on a look at the pavement. In that sense I can "see" things others can't.

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    [โ€“] 19 points 11 months ago (2 children)

    I can smell when a woman is pregnant. I've shocked several friends by congratulating them before they even took a test.

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    [โ€“] 15 points 11 months ago

    The ringing in my ears is my own personal sensation. There are many others with a ringing of their own, but this one is mine and it undoubtedly is as unique as my fingerprint.

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  • [โ€“] 14 points 11 months ago*

    Not me but my gf has a rare condition called SCDS. Basically, she can hyper hear her own body. Her heart sounds like a loud bass drum. She can hear her eyes when they move. She can hear her bones when they creak.

    It is unsettling and can be quite dis-orienting and painful. She has surgery scheduled next year to fix it!

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  • [โ€“] 13 points 11 months ago (1 child)

    I used to be able to smell ants and hear electricity. My senses aren't as keen as they used to be though.

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  • [โ€“] 13 points 11 months ago (6 children)

    Low light vision.

    I was always very sensitive to bright lights and sincerely fear I'll go blind at my last years but I can see at higher definition under low light conditions.

    My vision stops processing color and I get higher definition of contrast. I've walked through dark areas with no difficulty, where others simply said they could not see a thing.

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  • [โ€“] 10 points 11 months ago (2 children)

    Maybe everyone already knows this but you can generally see better in your peripheral vision in low light.

    Almost all of your color vision / cones are concentrated in a tiny central area of your retina.

    The grey scale / rods are dispersed around that.

    In some ways I think night vision is a kind of skill that some people might be better at than others, even if the mechanics of their eyes aren't special.

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  • [โ€“] 6 points 11 months ago

    Based on what I've read about senses, I think most of human sensory variance is born in the brain and is trainable to be much more sensitive than we'd generally expect possible given our comparatively weak hardware. Some of us have the supertaster gene, but no one comes out of the womb a sommelier.

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  • [โ€“] 4 points 11 months ago*

    Both my kids got this ability from me. We all wear sunglasses all the tome pretty much. Im approaching 50 now so my eyes aren't as good as they used tp be, but we all have 20/20 or better still. We are always asking people to turn off their flashlights so we can see.

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  • [โ€“] 3 points 11 months ago

    I got the same thing. In the army I realized that I was the only one in my platoon who was able to read maps clearly at night without lights. And I never needed a flashlight to navigate the woods in the dark.

    My night vision started to wane clearly in my early thirties, but being closer to 50 now I can still see a lot better at night than my friends whenever we go camping. Still, I bought my first headlamp a few months ago ;)

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  • [โ€“] 13 points 11 months ago (1 child)

    I see certain shades of blue as grey, while my partner can distinguish more shades of blue than the average person, leaving me often feeling like I'm being fucked with

    I wear almost exclusively grayscale clothing, except for a pair of pants that are apparently navy blue, and a shirt that's supposedly slate blue

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  • [โ€“] 12 points 11 months ago (1 child)

    Mould, I'm always surprised at how few people can smell when food is mouldy. I've had people insist the smell is a chemical smell, until we've found the offending mouldy item (e.g. When someone's left a cup of coffee on their desk and gone on holiday) and I reap the glory of being right.

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  • [โ€“] 8 points 11 months ago

    Yeah I feel like i can't smell a foul old coffee cup better than anyone else, but everyone's sponges always smell bad to me. I always hate washing a dish at anyone else's house because the bacteria in their sponge leaves a smell on my hands that doesn't come off from a normal hand washing or three. Rubber gloves also leave a smell on my hands that will make it difficult for me to sleep that night it smells so strong. Latex ones only, though.

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  • [โ€“] 11 points 11 months ago* (1 child)

    I can feel whether a battery is full or empty based on its weight. I know it doesn't make sense but I've done a blind test and it works. Empty battery is lighter.

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    [โ€“] 11 points 11 months ago (1 child)
  • [โ€“] 11 points 11 months ago

    When food is going to go off, or when an object has developed mildew/black mold, I can tell way before anyone else by smell.

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  • [โ€“] 10 points 11 months ago (5 children)

    There are syringes that come prefilled with saline used to flush IVs. Some people can taste it when it's injected, others can't. I'm one of those who can.

    I can quickly learn to recognize specific people's footsteps, so I can hear who's approaching. Sometimes it doesn't even depend on what footwear the person is wearing.

    Apparently I can hear high pitched sounds too. I've heard such sounds several times where people around me weren't able to hear it, and recently I could hear an ultrasound device too, which kinda make sense since they start at around 20 kHz.

    Also, this isn't about sensing, but I can slow my heart rate temporarily simply by holding my breath.

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  • [โ€“] 1 point 11 months ago (2 children)

    Hey hey, same on a few of these.

    Saline tastes like rubber bands smell, in my opinion.

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  • [โ€“] 1 point 11 months ago (1 child)

    pretty sure the taste is the plastic tubing. delicious microplastics

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  • Yeah, itโ€™s not microplastics per se, just volatile organic compounds that leech into the saline over time. The smell/taste is because those VOCs want to be in the air. So when they hit your lungs, they very happily evaporate and you exhale them. So youโ€™re just tasting your own breath. Like there may be microplastics present, but thatโ€™s not what youโ€™re smelling/tasting, because those wouldnโ€™t evaporate into your lungs to be exhaled.

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  • [โ€“] 18 points 11 months ago (6 children)

    The god-awful taste of sugar substitutes.

    A lot of people can taste things like saccharine I think? But I can taste any fake sugar, even when there is a mix of real and fake sugar in the same thing.

    Aspartame/acesulfane is definitely the worst of them all, but sucralose, steviaโ€ฆ all of them taste like medicine kind of.

    I can also taste the difference between cane and beetroot based granulated sugar. Beetroot sugar is sharper.

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  • [โ€“] 3 points 11 months ago (1 child)

    So much this. I live in a country with a sugar tax, so almost every soft drink on the market has part of its sugar replaced with some kind of sweetener. I didn't drink a lot of soft drinks before, but now I can't drink them at all.

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  • [โ€“] 2 points 11 months ago

    This is so interesting, since I simply can not tell a difference between the aspartame/acesulfane and actual sugar in fizzy drinks. I guess I have it easy because of that, but I have a somewhat keen sense of taste otherwise, I cook a lot and can detect what the taste is missing or has too much of pretty consistently, and know the โ€œoppositeโ€ tastes/ingredients to apply. And wines and such, itโ€™s sort of a synesthesia thing too, since I kind of feel them as something close to colors. But sweet things I have trouble with. I thought, not sure why, this was a human thing, but itโ€™s interesting to hear someone can detect the sweet things granularly! Cool!

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  • [โ€“] 9 points 11 months ago (6 children)

    I can smell iron in the soil from a distance (depending on how much there is), and if there's a lot of iron I feel very sick, almost like I'm going to vomit, and I want to get away from it. There was one place like that where the closer I got the more sick I felt and the more iron I smelled, I could taste it like there was blood in my mouth, some months later did they start digging there and found a lot of iron.

    I do not really like lager (love other types) for the same reason, the taste has a lot of iron in it especially some brands but I seem to be the only one who can taste it. I kind of rank lager as less or more irony taste lol.

    Sometimes at some bars does one or multiple beers on tap taste weird and sweet regardless of type or brand. No one else of my friends seem to be able to tell. I where at a bar once where only one beer tap tasted as it should... The rest had the same sweet weird taste.

    I also do not like coca-cola or Pepsi so my taste buds may just be weird.

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  • [โ€“] 4 points 11 months ago (1 child)

    Thats like a super power!

    Are you good at telling cardinal directions as well? Maybe you have metal in your brain

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  • [โ€“] 1 point 11 months ago

    I am unsure if I do, because I do not know if it is a knowledge thing or instinct. But in the forest am I pretty good at finding my way back even if I just walk randomly but it could also just be that I remember how I walked there.

    I do not feel the irons taste/smell that often in the city so I do not really know what it is that makes me feel that way. It is mostly in the forest.

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  • [โ€“] 9 points 11 months ago* (4 children)

    Not exactly sense, but my brain's processing. I can easily pick out the melody of only 1 instrument in music. It's like Fourier transform but on instrument level.

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  • [โ€“] 11 points 11 months ago (1 child)

    As a trained musician I do this too. But it also means the "skill" spills over into other situations. If I'm in a restaurant, instead of being able to ignore the hum of background conversations, I will hear (and subconsciosly bounce around focsing on) every side conversation.

    It makes listening to things VERY hard

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  • [โ€“] 5 points 11 months ago

    I taught myself to do this after reading about it in a short fantasy promo when I was little. An adult asks a boy what he can hear, and he says people talking, so the man instructs him on how to really listen to what is being said around him, to gather information without attracting notice. I've always wondered what that story was because I'd like to read the whole thing.

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  • [โ€“] 3 points 11 months ago

    I didn't realize that's not a thing everyone can do. There's a part of All I Want for Christians is You that's just someone mashing annoyingly on a piano, and it's so disgusting that I love it. It starts at about 0:58 on the YouTube Music copy, and then changes at about 1:05. It's such an annoying sound in isolation.

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  • [โ€“] 1 point 11 months ago

    I used to be unable to do this but took an interest in music as a hobby at some point and developed the ability to do it over time. I think it really helps to have built music from the ground up in a DAW or some such to begin to pick up on that.

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  • [โ€“] 9 points 11 months ago

    Despite having tinnitus, I can still hear very subtle sounds and identify them.

    • For example, a long, deep hum means a garage door is opening/closing.
    • I can also hear (and feel) footsteps and movement from people around a building, even very subtle movement.
    • I can also pick up on all the little creaks a building makes.

    However, despite being able to hear subtle sounds, I cannot hear "no" sound or silence due to the ringing. :/

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  • [โ€“] 9 points 11 months ago (2 children)

    I can tell where a laser is pointed on me without looking. Like if you blindfold me and got a laser pen and shined it on my arm, I can point to where it feels like it is with pretty good accuracy. Itโ€™s easier to detect motion than precise placement, and sensation wise itโ€™s not touch or heat like youโ€™d expect itโ€™s more like raw proprioception.

    Also it felt the same regardless of the color of laser we used which seems odd since youโ€™d think higher frequency light would be easier to detect.

    Tbf I havenโ€™t done the experiment since I did it with my siblings when I was pretty young. Not sure if I can still do it, but my siblings and cousins couldnโ€™t do it even back then.

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  • [โ€“] 17 points 11 months ago* (last edited 11 months ago) (4 children)

    i can see very well in the dark, like pitch black night in the arctic circle in a forest i can see the ground enough that i wont trip and can avoid things like snakes

    i fucking hate all the bright lights on cars now btw. the sun is genuinely distressing to me i just simply cannot go outside without sunglasses, even when its very cloudy

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  • [โ€“] 4 points 11 months ago (3 children)

    Found the vampire. Nostrafeu?

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