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183 points petalmind | 87 comments | | HN request time: 1.48s | source | bottom
1. bigyikes ◴[] No.45763274[source]
I’ve interrogated people about this but can never get a straight answer.

——

“So you can really see things in your head when your eyes are closed?”

Yeah!

“And it’s as though you’re seeing the object in front of you?”

Yeah, you don’t have that?

“So it’s like you’re really seeing it? It’s the sensation of sight?“

Well… it’s kind of different. I’m not really seeing it.

——

…and around we go.

Personally, I can see images when I dream, but I don’t see anything at all if I’m conscious and closing my eyes. I can recite the qualities of an object, and this generates impressions of the object in my head, but it’s not really seeing. It’s vibe seeing.

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2. mnmalst ◴[] No.45763353[source]
I am the same and I am not convinced people can really - see - things. Like, when I close my eyes, I see the inside of my eye lids, the blackness. When I then try to imagine a candle for example there is no candle appearing in the darkness, I just remember how a candle is shaped its parts and similar characteristics. I see nothing.
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3. ehutch79 ◴[] No.45763377[source]
Pretend you're talking about photos and cameras. You mean you can see the image? even though the camera isn't pointed at it now? Like it's really seeing it?

Same idea. You're seeing it, but you know it's just a memory of the thing, not a live view. Like pulling up a video or jpg instead of a live feed.

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4. kraftman ◴[] No.45763432[source]
It's like hearing a song in your head, you can listen to it and maybe keep time roughly but if someone asks you what instruments there are you might not be able to get all of them, or might not remember the drums or the baseline. It's all much more vague. If you asked me to remember my childhood home I can visualise 'all of it' in my head, but maybe not what the type of bricks are like, or where all of the windows were.
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5. the_af ◴[] No.45763435[source]
> I just remember how a candle is shaped its parts and similar characteristics

If you do not somehow "see" the shape of the candle, how do you remember its physical characteristics? Is it like a list of physical properties in abstract form? An irregular cylinder of diameter X, longer than it's diameter, etc?

I can see, in front of me, a lit candle if I wish it. I cannot claim it's picture-perfect, but I can see it; and most people can, too. I can see its yellow flame flickering. I can see drops of wax along the candle. I can see the yellow light it casts.

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6. bigyikes ◴[] No.45763443[source]
Let’s suppose you have perfect recall.

Pull up the image on your phone and look at it. Now close your eyes and imagine the image as accurately as you can.

Is it as though you didn’t close your eyes at all? Do you see it the same way as when your eyes are open?

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7. bigyikes ◴[] No.45763616{3}[source]
Not the parent, but I relate to their experience.

It depends on what you mean by “see”.

It’s nothing like seeing with my eyes, and it’s nothing like dreaming.

When I “see” it is abstract. There are impressions and sensations. I can recall the qualities of something - even the visual qualities - but it doesn’t feel like sight.

Can you remember what something smells like? I can recall a foul smell, but I don’t recoil because it doesn’t actually feel like smelling. Still, I have an impression of the smell. Sight works the same for me.

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8. k__ ◴[] No.45763736{3}[source]
No.

When I'm fully awake, the mental images are more like someone attached a new camera with a field of view that ends at the edges of the object/scene I try to generate.

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9. mnmalst ◴[] No.45763869{4}[source]
yes I think you come close to describing how I imagine things. Seeing is just fundamentally the wrong word, at least in my case. When I for example imagine a road I rode on with my bike the other day and do this with my eyes open, there is nothing popping up in front of my eyes, mixed with what i actually see atm, it's more like abstractions popping up in the back of my head. Very simple drawings maybe, just the contours of how it really looks.
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10. karmakaze ◴[] No.45763874[source]
I'm also the same, but I do believe others can vividly see creations in their mind's eye. Nikola Tesla was one who could tinker in his imagination.

Of course I wish I could do the same. On the other hand, like a blind person with other heightened senses, I have strengths in thought that surpass what seeing concretely may obscure. Most of my thoughts and reasoning is more like following graphs of related bits of vaguely visual information, it's far more topologically structural than bound to 3D physicality.

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11. Narushia ◴[] No.45763963{4}[source]
> it’s nothing like dreaming.

That's interesting. When I close my eyes and imagine "seeing" things, I would actually describe it as pretty much exactly like the sensation I have when I "see" stuff in dreams. To me, this similarity is especially clear when I wake up in the middle of a dream, then close my eyes while awake — I can continue where I left off, and it "looks" exactly the same as in the dream.

But I agree that it doesn't feel like "sight", as in the physical act of seeing with your eyes.

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12. cma ◴[] No.45763969{4}[source]
> Can you remember what something smells like? I can recall a foul smell, but I don’t recoil because it doesn’t actually feel like smelling. Still, I have an impression of the smell. Sight works the same for me.

Can't get a foul smell reaction mentally, but if I visualize eating a bag of salt & vinegar potato chips and recall the taste I'll get extra saliva production. Not with most other foods so I think it's more mouth preparing to dilute the acid than just straight pavlov saliva before feeding reaction.

13. nosianu ◴[] No.45763976[source]
For me it is like a different "space" for mental vs real images. It is not the same neurons, I would guess.

The real images are (and feel) outside of myself (obviously, you may say). The mental image feels very close and kind of "inside my mental space", in a dark space. It is far from how I see with my eyes on all levels, very basic. It is more conceptual, that concept given some vague form, not "pixels" (not that the eye is like a camera sensor either, it is much more complicated, a lot of pre-processing taking place right in the retina, which developed from a piece of brain in very early embryonic development). The better I know the object the better this internal concept-image, but far from what looking at the real thing is like.

I am able to visualize, that's why I could write this, but I think my ability to do so is near the bottom. It is vague without details unless I concentrate on them specifically, and it is very dark in there.

On https://en.wikipedia.org/wiki/Aphantasia I am between apple #3 and #4 in that picture. When I read novels I develop barely any internal imagery, only barebones conceptual ones. Sometimes I look at fancy visually stunning movies, Youtube videos, or graphics sites on the web specifically to "download" some better images into my brain. Mostly for fantastical landscapes and architecture.

The Lord of the Rings movies, for example, completely replaced all internal mental images I may have had, even though I read the books long before those movies were made. People like me need graphically talented people around, or my mental images will be very much limited to drastically reduced versions of what I see in real life. (THANK YOU to all graphical artists).

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14. darkmighty ◴[] No.45763985[source]
I'd describe it as like having a second monitor in your desktop. It's not inherently "over" what I already see or anywhere physical, it's like in a different space. Sometimes it can feel like it's "behind" what I am seeing indeed (i.e. kind of over), but it can vary and I suspect that's just a learned position (I just tried and I can shift the position images 'feel where they are').

I don't see with full fidelity, I suspect that's to save power or limitations of my neural circuitry. But I can definitely see red and see shapes. Yes, it's not exactly like seeing with your eyes and if you pay attention you can sense there's trickery involved (particularly with motion being very low fidelity, kind of low FPS), but it's still definitely an image. It's not that it's a blurred image exactly, more that it only generates some details I am particularly focused at. It can't generate a huge quantity of details for an entire scene in 4K, it's more like it generates a scene in 320p and some minor patches can appear at high res, and often the borders are fuzzy. I can imagine this with my eyes open or closed, but it's easier with eyes closed.

It feels (and probably is?) that it's the same system used for my dreams, but in my dreams it's more like "setup" to simulate my own vision, and the fidelity is increased somewhat.

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15. drooby ◴[] No.45764018{3}[source]
I'm convinced I probably have aphantasia.. maybe even quite extreme. On a scale of 1-10 probably 1 or 2 vividness.

But if I take shrooms.... I can actually see objects with my eyes closed. I can rotate them. Morph them. It's so fun! Huge bummer that I miss out on stuff like this in my daily life.

What's weird is that I can still "rotate objects" and correctly predict their final state when I am sober (up to a point, of course). But I am blind to the actual visual. It's hard to explain. It's just not registering in my consciousness - but perhaps it's there behind the curtain.

So, the mind is undoubtedly capable of performing this feat. However, my brain in sober state is not wired to transfer information in this way.

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16. ◴[] No.45764025{3}[source]
17. altruios ◴[] No.45764048{5}[source]
Perhaps it is a mental process you can train and get better at. I understand the 'back of the head', location for imagination. And now - for me - it's at the front with some specific training. Drawing (and specific techniques within) have been the cause of the biggest shifts to 'where/how' my imagination is.
18. noir_lord ◴[] No.45764150[source]
> Personally, I can see images when I dream.

If I dream I don't ever remember them - I assume I must, I think everyone (barring medical issues) has REM sleep.

I envy people that, dreams sound amazing.

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19. kaffekaka ◴[] No.45764208[source]
In my experience remembering dreams is a matter of practice and stress levels. When life is calmer I remember alot more.
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20. Semaphor ◴[] No.45764237[source]
I went from frequent lucid dreams as a child and teen, to no (remembered) dreams, back to vivid (but very rarely lucid) dreams. Ask while having aphantasia, I wish I could get even approximately close to dream images while awake.
21. more_corn ◴[] No.45764282[source]
I’ve got a hollow log from an apple tree in front of my parked car. I know the contractor put a bucket upside down on it, I could walk out my front door with my eyes closed and kick it (I know exactly where it is) But is the bucket at an angle to the left or right? I don’t have a picture I can reference. I know that I don’t know because I’d have to have noticed and remembered.

Does your photograph allow you to faithfully recall details you didn’t notice at the time or is it a simulation of an image?

22. conradev ◴[] No.45764285[source]
It's the same for me, in terms of it being dark and fuzzy unless concentrated on.

but I really do notice this sort of ability when it comes to memory. When I am looking for something, I can often visualize a scene of where I saw it last. This is not always helpful for actually finding the object, but it can be! When trying to recall a meeting, I can recall materials I saw (bits of text on slides, images, etc).

I'm fairly good at remembering faces, and if they're next to a name when I see them, I can even associate the name! The flip side, of course, is that if I don't see the name, I won't remember it.

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23. noir_lord ◴[] No.45764307{3}[source]
Not for me, never remembered them at any point, I asked my mum once if she remembered me dreaming when I was a kid and she couldn't remember it either, no dreams/no nightmares.

I have an active imagination and I read a lot of fiction and I don't think I have aphantasia, I just go to sleep, wake up and never remember a thing in between.

24. kulahan ◴[] No.45764378[source]
Have you tried a dream journal? We forget most of our dreams because we might have them at 2 am and wake up at 7 am. If you wake yourself up in the middle of the night one or two times, you're more likely to have been in the middle of a dream, and it's still up there in your brain enough to write down. The more you do this, the easier it becomes.
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25. kulahan ◴[] No.45764421[source]
It might be easier to describe as an eye that is only opened manually, and can only focus on highly specific things. This is my superpower - I can see things vividly in my mind, spin them around, zoom in/out, and more.

When I'm looking at it, the only thing I can see is whatever object is being imagined. However, yes - it's similar to the sensation of seeing with your own actual eyes. The reason it seems so foreign is because our real eyes can see more than one thing at a time. Our mind's eye can only see exactly one subject at a time (though I should mention that when I navigate cities, I do so by imagining a birds-eye view, so there are many objects IN the map, but I cannot see anything other than the map, and it becomes extremely blurry outside of the section I'm focusing on).

26. kayodelycaon ◴[] No.45764534[source]
I have three different ways that vision seems to work with me.

1. Actually seeing something like in a dream.

2. A mental scratch pad I can draw on and use spatial awareness to navigate. (I see the code of applications as flying over a landscape or walking through a forest.)

3. Imagination, which uses whatever data vision gets turned into.

I'm not sure how common 2 is. A lot of my brain has broken parts and this scratchpad is used in place of logic. This works fine until I need to work on linear list of similar tokens and keep them in order, like math and some functional programming languages.

27. bigyikes ◴[] No.45764577{4}[source]
Okay, forget everything outside that field of view in your real vision.

If you could crop your real field of view somehow to just the photo in question, then would it be as though nothing changed?

(Like, I get that things outside the phone image would change, but does the image your imagining change? Does the sensation change?)

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28. pm215 ◴[] No.45764723{3}[source]
Personally I strongly do not want to get better at remembering dreams. At the moment I very rarely remember anything about dreaming, and on the very rare occasion that some fragment of memory from a dream pops into my head it is super confusing until I identify "oh, that must have been from a dream". I prefer to keep my memory uncontaminated with random garbage :)
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29. tbabb ◴[] No.45764810[source]
Here is some context: Early in the aphantasia discourse, someone asked a group I was in to do a mental exercise: Imagine an apple. Can you tell what color it is? What variety? Can you tell the lighting? Is it against a background? Does it have a texture? Imagine cutting into it. And so on.

For me, not only was the color, variety, lighting, and texture crystal clear, but I noticed that when I mentally "cut into" the apple, I could see where the pigment from the broken skin cells had been smeared by the action of the knife into the fleshy white interior of the apple. This happened "by itself", I didn't have to try to make it happen. It was at a level of crisp detail that would be difficult to see with the naked eye without holding it very close.

That was the first time I had paid attention to the exact level of detail that appears in my mental imagery, and it hadn't occurred to me before that it might be unusual. Based on what other people describe of their experience, it seems pretty clear to me that there is real variation in mental imagery, and people are not just "describing the same thing differently".

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30. tarentel ◴[] No.45764870[source]
Not quite. I have had a lot of musical training and have a very good musical memory. I can write down songs from my head or hear a song and write it down later, depending on how complicated it is, usually with only 1-2 listens, or play it back, etc. I can visualize things in my head but it is a lot more abstract, or rather, harder to explain.
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31. itsamario ◴[] No.45764877[source]
Can you remember seeing? I use my imagination to get a very grainy image but it's usually my interpretation of it and what I'm using it for.

Like when in school I'd imagine graphs lines before drawn or best example is a cad test and from reading the directions I could get an idea of what I was about to draw in cad

Man made computers in our image, it use to be a job title.

32. RajT88 ◴[] No.45764937[source]
For me, it's a little more like you describe these days. It is images, but fuzzier and more impressionistic than it used to be. I have to concentrate harder to have a full-on image of a scene, and can't so much when multitasking.

In college, especially when I was studying Japanese and had to memorize a lot of shapes, I could look at a poster filled with characters and recall it hours later to translate those characters. Your mind is a muscle and it gets better with exercise, and grows weaker when lazy.

33. goatlover ◴[] No.45764963[source]
Some people can see images while they are conscious just like you see them in your dreams. Perhaps even better, depending on their ability to visualize. Maybe you just never developed the conscious ability to visualize.
34. chao- ◴[] No.45764967{4}[source]
I remember my dreams quite well. Years ago, I did a dream journal to up that even further. At the time, I discussed doing so with a friend, and she expressed a similar sentiment to yours. In our discussion, she explained not wanting to "carry emotional baggage" from a dream into her day, being distracted by it, and so forth.

That phrasing of "carrying emotional baggage" stuck with me, because together we realized that people can relate to their dreams very differently. If she remembers a dream, she remembers the feelings and feels them all over again. I regard dreams as junk data, and can't imagine "feeling" anything about one longer than a few moments after I wake.

35. goatlover ◴[] No.45764981{4}[source]
What about memory? Do you occasionally have vivid memories of sight, sound or smell?
36. tavavex ◴[] No.45765037{3}[source]
I think the person you're replying to didn't describe it exactly. It's not really about how good your memory is, I think. It's that no matter what, "replaying" the song in your head isn't going to bring about the same reaction as actually physically hearing music. It's like a simulation, a higher-order perception, thinking of yourself hearing it rather than willing yourself to really hear it in the same way as usual.
37. tavavex ◴[] No.45765082{3}[source]
Can you describe what you mean by "seeing"? To me, imagination isn't like actual sight. The best way I can describe it is that it's a kind of meta-perception, I'm envisioning the thought, the impression of something. I can visualize the exact details and properties of the candle, but it's not like I'm actually seeing it, I'm just thinking of seeing it. The way you describe your imagination is that it's as if the candle is superimposed on your actual vision, like putting on a mixed-reality headset that's drawing in stuff in your real field of view, representing the same kind of sight as "real sight". Is that what that's like for you?
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38. kaashif ◴[] No.45765169{4}[source]
As someone with very poor natural dream recall, I think you're right. One time I kept a dream journal and got really good at dream recall.

It was just hours and hours of random junk every night.

I threw away the journal and realized forgetting dreams is good.

39. zdragnar ◴[] No.45765215[source]
Back when I was on some medication to help me sleep, it came with the side effect of having vivid dreams... and if I didn't fall asleep fast enough after taking it, I'd get hallucinations while my eyes were closed. I knew I wasn't seeing what I thought I was seeing, but I wasn't really in control of the imagery. In one case, I thought there was a suit of armor standing over me and mumbling. In another, I was laying in bed, but I was seeing the living room from a few feet outside of my bedroom.

My - and what I presume is "normal" - mental imagery isn't any different than those hallucinations, with the exception of I am willing what I imagine, and therefore control what I "see" in my mind. The colors, contours, lighting, shading, and so on are all like what you would see with your eyes, though the actual level of detail is less.

40. comprev ◴[] No.45765290[source]
I can _remember_ the properties of an apple - approximate size, weight (my hand does not instantly drop to the floor due to its weight), etc.

I can't _imagine_ an apple in my hand if you defined the colour, size or weight (for example, purple, 50cm diameter and 100Kg).

In my mind I am recalling a _memory_ of holding an apple in my hand - not imagining the one according to your specifications.

One example I can give is being tasked with rearranging desks in an office. I can't for the life of me _imagine_ what the desks would look like ahead of physically moving them into place.

I can make an educated guess based on their length/width but certainly not "picture" how they would look arranged without physically moving them.

It's like my brain BSODs when computing the image!

The same applies to people - I can only recall a memory of someone - not imagine them sitting on a bench in front of me. I might remember a memory of the person on _a_ bench but certainly not the one in front of me.

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41. lm28469 ◴[] No.45765329[source]
When people tell me they can see things in their mind I usually ask something like:

"imagine a ball, can you see it?"

"yes"

"ok what color is it? "

I never heard anyone say anything other than a variation of "hm I don't know". It's just an anecdote but still

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42. antonvs ◴[] No.45765523[source]
> Personally, I can see images when I dream, but I don’t see anything at all if I’m conscious and closing my eyes.

That's classic complete aphantasia. I have it too.

The "kind of different. I’m not really seeing it" would apply just as well to dream images. If you're interrogating people, you might try asking them whether it's similar to that.

43. antonvs ◴[] No.45765541[source]
What's funny is, I have complete aphantasia, but I can imagine a ball, I just can't see it. If you ask me what color it is, I would say white, because I imagined a baseball. But I can't see it, I'm just thinking about it.
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44. antonvs ◴[] No.45765585{3}[source]
I remember the shape of a candle perfectly well, I just can't "see" anything.

It's not a list of abstract properties, it's an understanding of the shape of a candle. Why would you need to be able to see it to remember its shape?

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45. Trasmatta ◴[] No.45765611[source]
This actually highlights to me what may be different about mental images for other people. Because I can much more clearly hear music in my head than I can see images in my head. So if it's much more vague for others, that must be kind of what images are like for me.
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46. fsniper ◴[] No.45765801[source]
Very very well put. I couldn’t describe my same state as you have. Makes perfect sense for me. Thank you.
47. the_af ◴[] No.45766033{4}[source]
Because the shape is a physical thing, it's perceived by your senses.

I meant remember, not understand. You can understand something, but I specifically mean remember.

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48. kraftman ◴[] No.45766041{3}[source]
When you read this do you hear it in your head?
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49. the_af ◴[] No.45766059{4}[source]
It's like a photograph is an indirection of the thing that was photographed: not the real thing, but a good visual approximation.

It's like watching a movie; the people are not there, but you still see them.

The cinema is in my mind. People here describe it as "thinking of seeing", but to me that's nonsense. It's definitely a visual thing, I bet it's activating some of the same regions in the brain. Seeing is thinking anyway, in the sense the brain is interpreting signals from the optic nerve.

It's never an hallucination in the sense of being confused about what's real and what's not.

I can also anticipate the taste of something I like, feel it in my mouth, and start salivating. Is it tasting or "thinking of tasting"?

50. kraftman ◴[] No.45766076{4}[source]
It's more like it's in a different plane, you can see it but it's from another source, like how I can hear things but it doesn't effect my site. If I imagine a candle I "see" a candle in front of a black background, with a flickering flame and a bit of wax dripping down the side. Like how you can have a song in your head but still listen to people
51. karmakaze ◴[] No.45766094{4}[source]
Exactly same here. Can operation on the data, without the visuals.
52. markhahn ◴[] No.45766324[source]
but are those details fabricated on demand?

I don't have any trouble following your path of increased detail, but if someone says "imagine an apple", I get a vaguely apple-shaped, generally redish object (I like cosmic crisp), which only becomes detailed if I "navigate my mental eye" closer.

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53. ◴[] No.45766337{3}[source]
54. lordnacho ◴[] No.45766372{3}[source]
Can I ask you a personal question? How do you imagine sex? I thought that everyone kinda thought about themselves doing it with someone else, a bit like a porn movie that you make in your own mind.

I can't imagine it being at all interesting to just think about it the way you are talking about it, like it would just be a sort of description of what the other person looks like, without the multifaceted sensations. Touch, smell, visuals.

And if you can't imagine it, how do you go about ever doing anything about getting it? It's like saying you want a juicy burger without imagining yourself eating it. Like a paper description of an experience, rather than a simulation of it. It doesn't seem motivating enough that you'd bother washing yourself, getting nice clothes, and going to chat with women.

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55. markhahn ◴[] No.45766401{3}[source]
I find it implausible that people really have extreme, detailed imagery. Not that they can't do it on demand, if desired. But if every time they imagined something, it instantly appeared with all possible detail - that's just tremendously inefficient.

I think of it as more like Level of Detail in a 3d visualization. So when you ask people how much detail they imagine, their response strategy might determine most of the variance. (Some think you mean "what is the ultimate limit of your viz", and others think you mean "what detail is in a no-purpose-given, speeded-response viz".

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56. dekhn ◴[] No.45766536{4}[source]
What about people who can look at something and then draw it? https://en.wikipedia.org/wiki/Stephen_Wiltshire Do they have to recall specific areas, or do they perceive the entire thing as a fully instantiated mental image.
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57. YurgenJurgensen ◴[] No.45766661[source]
“Yes — I can imagine it. A simple sphere, maybe sitting in a soft pool of light.”

“I’m picturing it as a bright red ball, glossy and catching a bit of light on one side.”

Great, huh? Except that’s what ChatGPT said when I asked it those two questions. It certainly isn’t picturing anything. If a robot which only ‘thinks’ in terms of chain-of-thought of abstract tokens can act as if it truly sees things, what makes you think this test has any validity at all?

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58. anal_reactor ◴[] No.45766839{4}[source]
Not exactly. I can imagine (hehe) that robust imagination is useful for practical thinking. It allows to reason about the world without having to interact with it by simply simulating complex scenarios in your head.

It's like, if you want to make weather forecast, then you'll use as detailed models as possible, right?

59. saltcured ◴[] No.45766884{5}[source]
I think I am aphantasic or mostly so. I don't see visualizations but have vague echoes of their derived properties like spatial structures. It is almost like proprioception if I were some amorphous being that could spread out my countless limbs to feel the shape of the scene.

But, I do have vivid, sometimes lucid, dreams. I would say they are exactly like seeing and being in terms of qualia. It feels like my eyes, and I can blink, cover my face, etc. It's like a nearly ideal, first-person VR experience.

They are unlike reality in that I can be aware it is a dream and have a kind of detachment about it. And the details can be unstable or break down as the dream progresses.

Common visual problems are that I cannot read or operate computers. I try, but the symbolic content shifts and blurs and will not remain coherent.

Motor problems include that I lose my balance or my legs stop working or gravity stops working and I start dragging myself along by my arms or swimming through the air, trying to continue the story.

If I've been playing video games recently, I can even have a weird second-order experience like I am fumbling to find the keyboard and mouse controls to pilot myself through the dream! That is a particularly weird feeling when I become aware of it.

I feel like I have recurring dreams in the same fictional places, but they can have unreal aspects that lead me to get lost. Not like MC Escher drawings, but doorways and junctions that seem to be unreliable or spaces that don't make sense like the Tardis.

60. hosh ◴[] No.45766903{3}[source]
I think that is pretty normal while dreaming, daydreaming, or awake if you don't have aphantasia. Someone skilled in neural-linguistic programming can guide someone into developing greater and greater details.

Psychedelics and certain meditative practices can enhance this effect. There are also specific practices that allow imagined object to take a life of its own.

That's in the private imaginative mindspace. There are other mindspaces. There was one particular dream where I can tell, it was procedurally generated on-demand. When I deliberately took an unusual turn, the entire realm stuttered as whole new areas got procedurally generated. There were other spaces where it was not like that.

61. vanadium1st ◴[] No.45767452{5}[source]
Glad that you used this exact example! This guy doesn’t have a photorealistic memory. At least it’s far from as good as it’s claimed to be. He’s an artist proficient in a particular style - better than most, but not superhuman. When he’s not drawing from a direct reference, he’s simply making up details based on assumptions, not on photorealistic memory. Here’s a good example: https://www.youtube.com/watch?v=FyPqQIHkasI

He looks at a city and then draws a picture of it. It’s very detailed, so we assume he remembered all of it and recreated it accurately. But if you compare any part of it it to the actual photo of the city he saw, you’ll see that he only recreated it roughly — some landmarks, the general shape of the coastline. He probably got the number of bridges right.

But you couldn’t use this as a map. If you were trying to find a particular building that isn’t among the top 15 most memorable ones, it’s probably not in his drawing, with a completely random building taking its place instead. Every part of that drawing is filled with mistakes and assumptions that would never be made by someone who could actually see the landscape in their mind like a photo.

And it’s the same with every other claim of photorealistic memory - it’s always some kind of trick where people have a decent but realistic level of memory. And then they fill the gaps with tons of generated detail that we either can’t check, or wouldn't bother to check.

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62. antonvs ◴[] No.45767830{5}[source]
I can prove I can remember the shape, because I can draw it.

I think you're putting too much importance on the ability to visualize it. I can have a high-resolution image of a candle, but it's not useful for understanding that there's a candle in the picture - for that, you need to have parsed the image and understood what it contains. The visualization is just the source material. Similarly, when you read a book, you're not remembering what entire pages look like with all the words on them.

The problem with these kinds of things is that so much happens unconsciously that we're not aware of. You think remembering the image is important because you're unaware of all the processing that allows you to understand the image.

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63. the_af ◴[] No.45767888{4}[source]
I have so many questions to ask people with aphantasia related to sex, but it would get uncomfortably personal, so maybe best not to.

The best I can do: do people with aphantasia only get aroused if the stimulus is present? Can't they not get horny just imagining things, like I imagine most people can?

Does steamy literature do anything for them? I imagine it doesn't, since if you cannot imagine things then words on a page just have no power.

In my opinion, the fact erotic literature exists is proof aphantasia is not normal. Words cannot be arousing if you cannot imagine things "in your mind's eye".

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64. nofriend ◴[] No.45767893{5}[source]
> In my opinion, the fact erotic literature exists is proof aphantasia is not normal. Words cannot be arousing if you cannot imagine things "in your mind's eye".

The opposite seems to follow? erotic literature is proof you don't need images to be aroused.

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65. antonvs ◴[] No.45767946{4}[source]
I wouldn't say "hear", but I do have an inner monologue. When I read, I have an experience of the words in my mind. But similarly, when I look at the world, I have an experience of what I'm looking at, while I'm looking.

The difference comes when I close my eyes vs. block my ears. When I close my eyes, I don't see images, I can't voluntarily make images appear. But with my eyes and ears blocked, I can still think words - my inner monologue - which I experience in much the same way as I do when I'm reading. I can't conjure other sounds though, which is why I don't really consider that equivalent to "hearing" - it's not sound, it's the concept of words. I don't have any analogue of that for images.

Ordinary aphantasia doesn't imply anything about lack of inner monologue. Some people apparently do lack an inner monologue, and if they're also aphantasic, that's been described by some authors as "deep aphantasia". But there's no evidence that the two conditions are related, except in a kind of conceptual sense.

66. aytigra ◴[] No.45768368{4}[source]
For me visualization by itself is mostly useless, it is more of a concept of something arousing happening and vague visual flashes of something similar I have seen. It somewhat works, but nowhere near as effective as real pictures.

What works for me - is imagining sensations, they could enhance both real and vague pictures, and I feel them directly in the body which makes them very effective.

67. aytigra ◴[] No.45768536{5}[source]
Good erotic literature does not only describe images, but also desires, emotions and sensations, all of which I think have different channels of imagination/recall.
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68. vanviegen ◴[] No.45769063{6}[source]
Yeah, it resembles what you'd get when using gpt 4o for image editing. Of the parts that should have been unaltered, the broad lines are correct, but the exact details are made up. A modern white chair is replaced by some other white chair. A book is replaced by some other book. Etc, etc.

Both brains and gpt appear to be doing lossy compression based on preexisting world knowledge.

69. vanviegen ◴[] No.45769092{3}[source]
> I can't _imagine_ an apple in my hand if you defined the colour, size or weight (for example, purple, 50cm diameter and 100Kg).

I think most people couldn't imagine holding an apple specced like a washing machine in one hand. :-)

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70. lm28469 ◴[] No.45769756{3}[source]
Not everything is about AI, I don't give a shit about what chatgpt thinks
71. navigate8310 ◴[] No.45770538[source]
When you image slicing, does the video your head renders smooth or jittery string of pictures strung together?
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72. lucyjojo ◴[] No.45770656{6}[source]
but what we see in the first place is not what's out there. a lot of it is generated by the brain. (same for what we hear)
73. the_af ◴[] No.45770797{6}[source]
Hmm, no? The words must elicit images and sensations, otherwise they wouldn't work as erotica. Words are just words. If you cannot picture what they are describing, you cannot get aroused.
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74. the_af ◴[] No.45770802{6}[source]
I didn't mean it describes images, I meant it elicits them. If you cannot imagine what's happening, you cannot get aroused. Words are just words, they must conjure an image.

Aphantasiacs often cannot imagine sensations either (at least, my friend doesn't. He cannot imagine the smell of coffee either).

75. the_af ◴[] No.45770820{6}[source]
> I think you're putting too much importance on the ability to visualize it.

Almost all artists will tell you the ability to visualize is critical to be a good artist...

76. danielbln ◴[] No.45770889{4}[source]
That'd be a tiny washing machine, to be fair. That said, a 50cm diameter apple would weigh maybe half that, unless it's made entirely of water ice.
77. animal531 ◴[] No.45771483{4}[source]
It can be highly variable. For example in the morning or right after a nap I can visualize in extreme detail, but when I'm awake and at my most alert it will become a lot more basic.
78. armonster ◴[] No.45774356{6}[source]
This is called building your 'catalogue' in art, especially concept art. In order to draw something (well) from imagination, you should draw it from reference many times. Then when you draw from imagination, your brain will pull from what it knows. And since you studied the subjects, the textures, the shapes, etc, so well, you will have that stored away and will be able to do so.
79. nofriend ◴[] No.45774797{7}[source]
> If you cannot picture what they are describing, you cannot get aroused.

This is your thesis. In the first place, the existence of erotic literature doesn't prove this is true, like you claimed. I would furthermore claim that it calls this assumption into question. If the goal was imagery, the more straightforward approach would be to draw an image. If that wasn't possible, you would instead describe the image you wanted to draw in words in great detail. But this isn't at all what most erotica consists of.

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80. RaftPeople ◴[] No.45775780{3}[source]
For me the default is typically an instant view of whatever is described, first an apple, then when I read "sliced" now it's suddenly in slices. But if I want to image motion I can easily do that also, like of a knife cutting down through an apple and the two halves falling to either side, just like a video but with a generic background and other simplifications, like the knife suddenly disappears when the cut is complete.
81. RaftPeople ◴[] No.45775794{3}[source]
For me images are clear and easy, sound is limited and more difficult.
82. RaftPeople ◴[] No.45775838[source]
> I am the same and I am not convinced people can really - see - things

My experience of seeing images in my mind is significantly different than when I am not seeing images, and also different from just remembering the details of an object like an apple vs visualizing it.

Regarding closing your eyes: I don't typically close my eyes when I create mental imagery, I'm turning it off and on right now as I type this, now there's an apple I can see in my mind, now there is nothing but the generic slightly darkish background that the apple was sitting in front of. Now the apple is there again but it's green not red, etc.

83. RaftPeople ◴[] No.45775866[source]
> "ok what color is it? "

As I was reading your post and imagining, when I got to the color question it was a plastic spotted ball, white background with various colored spots. As I continued reading I switched to a red rubber ball.

84. the_af ◴[] No.45775943{8}[source]
> In the first place, the existence of erotic literature doesn't prove this is true, like you claimed

Everything we are discussing in this comments section must be understood in an informal way. I obviously did not "prove" anything; I don't think anything can be proven about this anyway. Whenever I say "proof", read my statements as "[in my opinion] this is strong evidence that [thing]".

It's a figure of speech: "this cannot be so!", "it must be like this other thing", etc. It's informal conversation.

> If the goal was imagery, the more straightforward approach would be to draw an image.

Maybe straightforward, but as with anything related to the phenomenon of closure (as in Scott McCloud's closure), drawing an image closes doors. If you describe but don't draw an image, the reader is free to conjure their own image. Maybe they visualize a more attractive person than the artist would have drawn, or simply the kind of person they would be more attracted to.

Have you never seen a movie adaptation after reading the book and thought "wait, this wasn't how I imagined this character"?

> If that wasn't possible, you would instead describe the image you wanted to draw in words in great detail. But this isn't at all what most erotica consists of.

That's such a mechanistic description! Words don't work like this. Sometimes describing less is better, because the human brain fills in the gaps. You don't simply list physical attributes in an analytical way, you instead conjure sensory stimulus for the reader.

(If talking about sex and adjacent activities makes anybody nervous, simply replace this with literature about food. In order to make somebody's mouth water you cannot simply list ingredients; you must evoke imagery and taste. Then again, some people -- aphantasiacs -- simply cannot "taste" the food in textual descriptions!).

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85. SamPatt ◴[] No.45778429[source]
I can visualize things in a lucid dream, and it's identical to seeing for me. But I can only control it for a short time before I wake up.

When awake, I have a "mind's eye," but it's more like what you're describing. As I fall asleep, I can actually begin to see things. I wonder if some people can do that when awake.

86. nofriend ◴[] No.45787491{9}[source]
> Whenever I say "proof", read my statements as "[in my opinion] this is strong evidence that [thing]".

read my statement as "it isn't any evidence at all"

87. k__ ◴[] No.45794085{5}[source]
The details get better or near photorealistic when I'm about to doze off.

When I wide awake, parts of the image are "gone" when I'm not focusing them.

Also, the sensation of seeing in my mind does feel different. It's like there is some different place where that image is showing up.

Even if I imagine the mental image to overlay with my real vision, it feels like it's "added" somewhere between my conscious mind and the outside/real world.