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Comment by UseStrict | Hacker News Reader

Similarly until last year I never knew that people actually could visualize things when they closed their eyes. I thought it was more of a metaphor. But alas when I close my eyes it's darkness. Thankfully I have my internal monologue to describe things to me in that darkness.

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When I close my eyes the images I can produce are no more vivid than the images I can produce with my eyes open. E.g., I can picture the car driving down the street behind me, or I can imagine a sphere in front of me. But in either can it's semi-transparent. It's like a hologram places in 3d-space relative to my-self, and it doesn't matter if my eyes are open or not. This is what I consider imagination. I thought this is how it worked for everyone.

How does this relate to what you're saying? Are you considering this visualizing things or not?

I can't visualize every kind of object. The easiest things to visualize are simple geometric shapes with a strong color. By default, if I try to "visualize something" it will be a red triangle.

I cannot visualize faces whatsoever, even if the person is right in front of me and I close my eyes suddenly.

Glad it's not just me that cannot visualize faces whatsoever! But with the exception of faces, I can visualize complex 3d shapes if I'm lucid dreaming. When I'm fully awake, my visualization abilities decrease quite a bit, so when I get a chance (which isn't so often with kids) I'll often lie in bed for an hour or so just thinking visually. My wife thinks I'm being lazy, but it's often the most productive part of my day.

Have you tested yourself for face-blindness or prosopagnosia?

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