Poll: Can you visualize details with your eyes closed?
There is a condition called "Aphantasia" [0]. People with this condition don't have a "mind's eye". This condition appears to have some correlation with folks with "nerdy" aptitudes, math, CS, etc.
When I first heard of this condition, I thought, "Wait, what? Are you telling me that when people say they see something in their 'mind's eye' they mean they really see it? I thought that was just a figure of speech for thinking about the thing."
I'm curious what people on HN experience when thinking about a real-world object.
Specifically, if I ask you to close your eyes and think of an elephant's head, do you:
[0] https://en.wikipedia.org/wiki/Aphantasia
61 comments
[ 3981 ms ] story [ 2399 ms ] threadSometimes it's voices, sometimes it's music; what parasites lives in the mind of someone that has aphantasia ? How do you think when solving a mathematical problem ? How do you design an algorithm ?
[0] https://news.ycombinator.com/item?id=38655858
[1] https://i.imgur.com/gpN7EcP.jpeg
For visualizing things I don't even really need to close my eyes I could just I guess you could call it daydream and just focus on trying to picture these things with my eyes open and it's like I could see both what my eyes see and what I'm imagining at the same time not like overlaid into reality or anything but just like two separate streams playing at once but giving time slicing to each with obviously more going to reality because that's kind of more important.
Edit: it's actually really hard for me to imagine that people can't do this and I've been working really hard on trying to not be judgmental against people who can't because it just seems so natural to me. And it's not like I'm psychotic or something or schizophrenic... I got my mental issues like long diagnosed ADHD since I was 2 years old but that doesn't disconnect me from reality in any way.
But I do know that there are some people out there who, are probably maybe fundamental religious people, who have a issue realizing that thoughts that they have aren't actually things that they consciously want to do... Like they judge themselves upon the sins that they think of in their mind. I find that weirder honestly. Imagine being haunted by judging yourself and your own moral compass upon the random brain firings that your subconscious has and brings to your consciousness. That's a self-imposed to hell that I couldn't even imagine, I mean they are just thoughts, learn how to meditate or something, let thoughts wash over you and realize that they are just thoughts don't try to push them down or silence them because that's not how brains work. Oh and also don't act on them but that shouldn't really have to be said. You're sentient being and you can filter what your subconscious thinks and what your consciousness picks up from it.
But with my eyes open I can imagine up the elephants or anything else just as detailed as those that I saw in person (either via recall of what I have seen or imagining up something new). I've never given any thought to this... but now trying to explain that I can see something with my eyes open while still seeing whatever I am looking at at the same time sounds really odd. I wonder if the visual stimulation and recall are somehow linked, or maybe I just need to practice with my eyes closed.
I think that if I really meditate or get closer to sleeping then things get clearer. It also helps if I'm not tired or have just been visualizing things a lot recently, like reading a novel. It's never particularly clear though (while wide awake).
I know that I visualize things clearly at least when I am asleep, because when I wake up from dreaming I can still remember/see what I was dreaming about for a few moments.
I suspect that part of it is that I really don't "need" to visualize things clearly for most of my work. What I need to do is work in abstractions and state changes. But maybe I am just a bit stupid in terms of visualization.
My best guess would be that the neural pathways related to an elephant would partially be firing, yet, the neural pathways from the eyes aren't, and the brain remains aware of this.
Some people will and some people won't be able to do that, and those who can't very likely will blame themselves for not being able to understand it. But as educators we need to make sure we give people without mental images actual images they can look at.
I have trouble with linguistic reasoning and I would greatly struggle with a phrase like this, even in a context where I am sure the meaning should be obvious. Visually I can imagine hundreds of ways to slice a donut and hundreds of ways to intersect that with hundreds of cylinders. But linguistically I am slow and dumb :) and would need you to specify how you're slicing the donut and where the cylinder is going.
I have to work hard to connect verbal reasoning with non-verbal implicit information - even in simple numbers sometimes I have to carefully think "no, she said from zero, that means you start AT zero, not at one. Otherwise she would have said after zero." The verbal confusion - and psychological insecurity - can sometimes obliterate what had been a solid intuitive understanding of the problem.
A.) try to express the details using my hands or
B.) Explain it more detailed (e.g. Imagine the donat is laying flat on the desk and we slice it sideways so we get two rings, we take half of it, ..." or best
C.) Show a visualization (obviously the best option)
Language is imprecise as you rightfully mentioned and mamy people will have similar problems to yours, which is why adding the context needed to have the picture is needed.
There is a natural instinct to return back to my normal way.
Thank you for the insight!
The most surprising thing to me is that this "condition" is not that well studied. Just shows how much we human still don't know and has many more science discovery to make.
I remember there was old post on HN about it from someone who used or still working in Amazon. I am on my phone now so may be someone else could search and copy the link.
The resolution of the elephant is initially bad, my head doesn't bother to fill in all the details at once. But if I concentrate on a specific part, say the ear, it will fill in all the details like the hairs and the texture of the skin.
I think I could say each of the answers would be correct to me. Of course I don't see an image like I would see of a real elephant. I see black with occasional colorful noise. So does that mean I have aphantasia? On the other hand, I can "consider" the image in any detail in this part of my mind that is similar but distinct from my regular vision. Is that seeing?
I would speculate here that maybe people don't have different experiences, but they just describe the same complex thing in very different ways...
If I switch to my minds eye, the LOD res’s up and I see it in full cinematic 4k, textures, shadows, everything but my normal vision “switches off” (I’m aware there’s light there, but no more detail than that)
Seems like for me it’s one or the other
I don't think I have such a mode. Sometimes when I'm bicycling for ~20 minutes with nothing happening, I'll involuntarily switch to some enhanced-imagination mode for a moment, but I can't do that on demand.
To turn this on it takes effort and directed focus - the action is voluntary and feels like it takes effort, every time I do it my eyes lose focus and look straight ahead, I cannot do it while I’m looking up/down etc (I just tried). It’s a mental only exercise, it’s almost like you know when you move the muscles behind / beside your ears and you can wiggle your ears a little? That pull-back sensation is just like that.
To turn it off and return to normal takes no effort, it’s almost like dropping a ball and it falls to the ground, I just release and normal vision and stream of consciousness resumes.
I probably did a terrible job of explaining that, sorry
It's also impossible to say whether it's accurate or not. It feels accurate enough without a direct comparison but it's not concrete or static enough to really say much more than that. When I imagine something and then try to recreate it in a real medium (drawing etc) it can come out differently, though then again I really suck at drawing so who knows.
One analogy would be hearing a conversation in a crowded room where music is playing. I can focus on the conversation, even while still hearing the music, and tell you some details of the conversation, such as who is speaking and tone of voice, but not actually understand the words.
Are people exaggerating? Or are they actually capable of watching HDR content in their heads.
This separate canvas is extremely limited compared to my actual vision. I can only focus on very small parts of it at a time, it’s about as accurate as drawing in the sand with a finger.
A few days later I called and got a recording: "You have dialed incorrectly; that number is not in service; please try again."
Done, same result.
A while later I bumped into the art gallery woman somewhere; me being me, I'd kept the scrap of paper in my wallet. I said to her, "We met a while ago; you gave me your number but it's not in service."
She said, "You must have remembered it incorrectly."
I took out her number — written by her — and showed it to her and pointed out she'd written it down for me.
She looked at it and walked away.
Shocked when I learned my immediate family member can actually visualize things without even closing their eyes which lets them essentially 'trace' what they're envisioning.
My best friend also is incapable of seeing things with eyes closed - they were a bit upset when I brought it to their attention.
Interestingly enough, of everyone I know I have the most vivid, engrossing, lucid dreams. Guess all that brainpower when sleeping saps the power supply for during the day.
My significant other only dreams in Black and White, which was more mindblowing to me than seeing black.
one also interesting thing is that when I read some book I can "see" story to point where I do not really notice text in the book I'm reading.
I think that I'm in the opposite camp than OP, because when I first heard about condition where some people cannot imagine things or do not have inner voice I had hard time to understand how such people think, because for me such visualizations are integral part of thinking. I guess this is one of those things that are hard to comprehend the other side.
Edit: for people believing they can see details there is interesting experiment I saw: try to draw a bike from memory. Everyone can recognize a bake but when you try to draw it, you might be surprised that you might not be able to reconstruct correctly some parts
Another example: it was recently demonstrated that rats can use their imagination for problem solving[2]; specifically, they can visualize (or "visualize"?) the layout of a maze they've learned, thinking though what paths to take based on their memories. It seems beyond the reach of current science to answer what the rats were thinking about exactly: maybe it was pure olfactory and tactile reasoning. But whatever it was, there were clear neural correlates between those thoughts and the physical layout of the maze.
Another example I can't find the source of now: crows were trained to respond to an extremely faint pulse of light beamed onto a wall. The intent was to make the crow uncertain about whether they actually saw the pulse and monitor their brains while doing so. After the pulse was shown, the crows seemed to compare their recent sensory experience against their past memories, trying to rule out false positives. Think about doing this yourself: you might initially think you saw a pulse, compare to the memory of the last time you actually did see a pulse, and realize that the actual pulse was clearly brighter, so whatever you saw was probably either a flicker or an illusion. OTOH if whatever you saw actually was quite bright and circular, it was probably a pulse. Crows seem to have similarly advanced reasoning.
Putting these together, I am wondering if perhaps "they really see it" is a phrase whose meaning is entirely determined by the listener. Humans have impressive cognitive diversity and, just as some people are truly tone-deaf, some people have "true" aphantasia. But for many people, I wonder if the difference between "visualize a picture in your mind's eye" and "recall the visual details of this object" might largely be a difference in viewpoint and perception, rather than actual recall or reasoning ability.
[1] I do not mean that my imagination is actually true to life. Crudely, I mean that I can semi-plausibly BS details similar to an AI neural network. So I picked "lush cinematic glory" but for me "accurate shape, texture" involves a very loose definition of "accuracy." I suspect that's true for everyone that doesn't actually live and work with elephants. I don't have to BS the details of my own cats.
[2] https://www.science.org/doi/10.1126/science.adh5206
I don't visualize it unless I want to, so I abstract this by default.
But if you said to visualize it I would.
I guess it's like the weaker emotions such as empathy, I can turn it on when I have to and just leave it off when it's not in use.