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Iirc those symbols in your vision with your eyes closed aren’t hallucinations. They’re reflective of the blood pressure and flow around your eye/eye lid. Though
by ianai 7y ago
Iirc those symbols in your vision with your eyes closed aren’t hallucinations. They’re reflective of the blood pressure and flow around your eye/eye lid. Though I definitely have an ability to relax by paying attention to them. I can’t offer a source for this though.
- blotter_paper 7y agoThe phenomenon you describe affects the phenomenon GP describes, but they are different phenomenon. Also, if you have relatively strong bloodflow you can see these fluctuations while staring at a white wall.
- opportune 7y agoThe colors themselves aren’t. However if you have even mild HPPD they take more complex forms (esp faces) and switch rapidly, like one face morphing into another
- chubot 7y agoI think everybody has the blood flow thing. But the degree to which they turn into "hallucinations" varies. By that I mean very elaborate geometric shapes with a lot of motion and rotation. Sort of like a Persian rug in 3D and 4D (time), with a lot of scale. Fractals, etc. I suspect there is some common physiological reason why people find fractals "trippy" and say pictures of cars in traffic are not "trippy". Drugs tickle your brain in a certain ways, but as the OP suggests, they're not the only way your brain can be tickled like that. And some brains are more predisposed to such hallucinations than others.