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Aphantasia is objectively measurable. Aphants lack a pupil response to “imagining” shapes of various brightness. They also lack the measurable “stress/anxiety” response to anxiety provoking written passages, but not images.

If any part of your imagination is like the experience of seeing, you probably don’t have it.




No, I remember it was like experience of seeing when I was a kid. I really saw stuff when I read the book. Now I kind of imagine it with thinking somehow. Hard to explain.




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