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[–] 130 points 11 months ago (4 children)

@Stacyasks@lemmy.cafe @nostupidquestions@lemmy.worldYes. It's called "Eigengrau" and it happens due to the adaptation of the eye amidst the darkness.https://en.wikipedia.org/wiki/Eigengrau

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  • [–] 58 points 11 months ago

    The indistinguishability of dark events from photon responses supports this explanation because rhodopsin is at the input of the transduction chain. On the other hand, processes such as the spontaneous release of neurotransmitters cannot be completely ruled out.

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  • [–] 10 points 11 months ago (1 child)

    So it's like when a camera doesn't have enough light to properly take a photo, producing a lot of grain. Like when you have a high ISO when taking a photo/video in a dark room, it looks very grainy. I guess the eye is still adjusting its "exposure" if you see some of this graininess in the dark (or when you close your eyes?)

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  • [–] 13 points 11 months ago

    the brain is always trying to find pattern in incomplete data. one of the explanations i have seen is that when our ancestors were sitting around the fire, those who saw the tiger or something lurking in the dark had better chance to pass their genes than those who didn't.

    it is why we are seeing patterns in clouds and random geometrical shapes on walls and stuff like that.

    https://en.wikipedia.org/wiki/Apophenia

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  • [–] 89 points 11 months ago (6 children)

    how did you take this photo? Small camera through your ear?

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  • [–] 113 points 11 months ago (5 children)

    They just closed their eyes and then pressed in their ear and anus to take a screenshot.

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  • [–] 21 points 11 months ago (3 children)

    Wow that's so much easier! I've always had to pee and fart at the same time

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  • [+] 33 points 11 months ago* (last edited 11 months ago) (5 children)
  • [–] 30 points 11 months ago (4 children)

    This is just the result of neurons firing and chemical reactions taking place, and it's normal. Personally, for me it depends on my state of mind when I try to sleep. When agitated, I see noise like in your picture. When calm, I see flat, colorful shapes with soft edges that float around and change shape more or less rapidly (kind of like a lava lamp).

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  • [–] 6 points 11 months ago (1 child)

    Ohhh yeahhhh the lava lamp like ones are cool. Sometimes vague impressions of cyan and red, sometimes propagating in waves. I'm so glad other people are describing it!

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  • [–] 2 points 11 months ago

    I also find them really helpful for falling asleep. Sometimes when I feel stressed and see mostly noise, I'll try to spot the color shapes and focus on them. It's kind of meditative and helps me fall asleep faster.

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  • [–] 28 points 11 months ago (3 children)

    I think it's called visual snow, and it's normal.

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  • [–] 6 points 11 months ago

    Visual snow is when you see it with eyes open afaik. But yea, still not terribly abnormal on its own. Visual snow syndrome is a thing though, but it's more than just seeing an abnormal amount of visual snow (the normal amount seems to be when looking at unicolored surfaces and in dim light).

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  • [–] 55 points 11 months ago (3 children)

    This is a normal closed eye hallucination level 1 on this Wikipedia page

    https://en.wikipedia.org/wiki/Closed-eye_hallucination

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  • [–] 27 points 11 months ago

    You have too much gain.

    But yeah it's normal.

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  • [–] 21 points 11 months ago (5 children)

    I see pulsing waves of color, even in pitch black rooms. When I was little they were bright as fireworks, now, depending on the night they're either just vaguely waves of purple, grey, and blue or sometimes electric blue and white.

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  • [–] 15 points 11 months ago* (4 children)

    I was recently reading about this because I discovered there's a name for it: https://en.wikipedia.org/wiki/Prisoner%27s_cinema

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  • [–] 7 points 11 months ago (3 children)
  • [–] 3 points 11 months ago

    Oh yeah, those things, I get them too sometimes. I always thought they looked like one of those super old Mac screensavers. (I can’t find a picture, but maybe someone here knows the one I mean.)

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  • [–] 20 points 11 months ago

    Yes, and if you GENTLY press on your eyelids you can make other colors happen.

    Also if you stare at a clear sky, NOT AT THE SUN, or at a bluish wall, you may see little swirly things, it's the white blood cells in your retinas swimming around.

    (Blue field entoptic phenomenon - Wikipedia https://share.google/MveakONY2KB3QXUUh)

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  • [–] 34 points 11 months ago (2 children)

    I see a little “DVD” logo zipping around that changes colour when it bounces off the periphery of my vision.

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  • [–] 16 points 11 months ago

    Purple, green, pinks and oranges (that's the blood in my eyelids I think). If I rub my eyes, the pixellated screensavers get wild, which I think means you're not supposed to do that.

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  • [–] 16 points 11 months ago (3 children)

    I always assumed everyone saw it. I'm not special after all.

    Though mine is gray, definitely not purple.

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  • [–] 2 points 11 months ago

    i had it intensely when i also developed other neurological issues like peripheral neuropaty, and palinopsia(afterimage)although symptom was temporary. now its more of a background if i concentrate hard enough i see snow. i had also had pretty bad RLS for several weeks.

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  • [+] 15 points 11 months ago (1 child)
  • [–] 29 points 11 months ago (1 child)

    Probably just your tuner that's unplugged. Feel around for any loose wires.

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  • [–] 14 points 11 months ago (2 children)
  • [–] 24 points 11 months ago (2 children)

    Better than seeing weird letters and 80 style colored geometric shape sliding around.

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  • [–] 12 points 11 months ago
    [–] 11 points 11 months ago

    From m'eye experience. Yes.

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  • [–] 10 points 11 months ago (4 children)

    Uhhh everyone is saying this is normal and I don't have it...

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  • [–] 2 points 11 months ago

    It happens to me at night because not only does it have to be quite dark, I audio need to be dork dark adapted. Your pupil is part of your dark adaption and widens in a mater of seconds. However, your receptors also get doped with rhodopsin, which takes up to 20 minutes to full replenish (blue/uv light bleachers rhodopsin). It's like being able to lower the F-stop on a camera like normal, but taking 20 minutes to raise the ISO

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  • [–] 10 points 11 months ago (5 children)

    If you see this when your eyes are open then it may be visual snow.

    Visual snow syndrome - Wikipedia - https://en.wikipedia.org/wiki/Visual_snow_syndrome

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  • [–] 10 points 11 months ago (3 children)

    What you're seeing is the inner workings of the holographic universe we inhabit. Your brain interprets the signal as static.

    /Obviously I'm not serious....

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  • [–] 1 point 11 months ago (2 children)

    But you're right.

    Only the hologram is produced by the nervous system. Not God's super computer or whatever.

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  • [–] 1 point 11 months ago (1 child)

    I mean, I guess that's true in a peculirar sort of way in which nothing really exists outside of our perception of it.

    What I mean by that is that whatever we see, hear, taste, etc... is merely neurons firing in our brain, processing a signal that it receives. So if we're looking at a tree for example; that tree is just light/energy waves vibrating on a specific frequency. It's only when it hits our optic nerve and travels to our brain that it's translating into something that we call a "tree".

    So when the eyes are closed, the random interference pattern could indeed be interpreted as you say. Goog catch. Kind of makes you wonder.

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  • [–] 1 point 11 months ago

    Yeah there's a term for it in Hinduism, Maya.

    I've also spent a lot of time and study with Buddhism. Explored a lot of mind altering drugs.

    Perception is a map of the territory influenced by karma (evolution and personal experience) In constant feedback with the territory, of course.

    But the map edits itself out. Because when a tiger appears on the map we need to run, not debate rather or not there's really a tiger.

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  • [–] 10 points 11 months ago (2 children)

    Yes. I "see" it too but can unsee it quite easily. I think it's more apparent in unlit environments.

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  • [–] 16 points 11 months ago

    Bro is a CRT

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  • [–] 8 points 11 months ago*

    Yeah, though mine doesn't flicker as fast - it kinda moves in slow waves.

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  • [–] 8 points 11 months ago

    for the topic of discussion it might be worthwhile to also look into https://en.wikipedia.org/wiki/Aphantasia

    1/10 people have it and have no idea it's not normal, my sister and mother too

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  • [–] 7 points 11 months ago (2 children)

    Does anyone else see 'the ring' when you rub your eyes and then just look at the canvas of your eyelids?

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  • [–] 6 points 11 months ago (3 children)

    probably caused by some small amount of light getting through your eyelids , or random noise in your nerves

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  • [–] 2 points 11 months ago (2 children)

    That's what they tell you to think. Hmmmm.

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  • [–] 5 points 11 months ago
    [–] 6 points 11 months ago

    If there’s no light, you should see eigengrau.

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  • [–] 5 points 11 months ago (1 child)

    I see brown and tan herringbone with paisley patterns blooming through it.

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  • [–] 7 points 11 months ago (2 children)

    I can make static if I squeeze my eyes very tightly, sometimes spots. No one i asked when I was little had the same results. Haven't thought about it in a long time.

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  • [–] 3 points 11 months ago (1 child)

    My wife and I have never experienced this. 🤷

    Very interesting though.

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  • [–] 3 points 11 months ago*

    It is hard to know exactly what we see because our brain processes it so much and then we have to put it into words and we could easily be describing different experiences the same way or same experiences differently.

    I would guess any light receptor produces noise whether that is a few stray protons or just thermal chemical/electrical processes. I would think for most people the brain is receiving noise very much like this but how they experience it depends on how it is processed. Unless there is some after image from recently staring at something bright, when my eyes are shut my brain gives me an impression of nothing which is almost certainly not what my retina is detecting.

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  • [–] 3 points 11 months ago*

    Yes, but its not purple, its just like as if your soul was drifting through the universe and you see tiny dot-sized stars from afar.

    Sometimes I couldn't sleep and the lights are off and there is a tiny bit of ambient light outside, and I just open my eyes and stare at the ceiling and also notice a sort of static like that, but with a brighter background light.

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  • [–] 3 points 11 months ago

    I'm glad to see most people replying yes, I was like "wait, is it not?". The only time I don't see noise is when I look at flat colors on a screen and I'm not a fan.

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  • [–] 3 points 11 months ago

    I do, and have had the same question.

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