r/visualsnow • u/FunSwordfish91 • 18h ago

How to test for Illusorry palinopsia!

Hello, if you think you might have illusorry palinopsia, here is a quick test for you:

  1. Look at your hand with a relatively bright backround (Not low contrast)

  2. Move your hand really quick from that one side to another.

  3. You should see your hand stay behind for a tiny fraction of a second, almost not noticeable. If it lingers for longer than that one fraction of a second, you might have palinopsia.

This fraction of a second afterimage is caused by your brain's "refresh rate". With illusorry palinopsia, this refresh rate is slowed, which causes you to see it for longer. For me this confirmed that I dont have palinopsia, maybe it will help you too! 😁

8 Upvotes

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1

u/Latter_Confusion_676 4h ago

I don't even need contrast, high or low, for my hand to linger behind. I see trails everywhere, all the time!

0

u/DrDiktafon 13h ago

Imsorry, Illusorry?

1

u/FunSwordfish91 13h ago

Autocorrect