Goal: make the percept feel generated inside the circle, not like an afterimage stuck to your eyes. This version uses screen-locked multiscale ambiguity, a strong rim anchor, and no fast flashing.
Stop if you feel eye pain, migraine aura, dizziness, panic, or discomfort. This page avoids high-speed strobe; do not add fast red/black flashing if you have seizure, migraine, or photosensitivity risk.
How to use it
Use max static, then fullscreen.
Look softly through the center dot for 45–120 seconds. Do not strain.
After adaptation starts, attend to the whole circle interior rather than hunting for shapes.
If it becomes too literal, raise blankness or soft blur. If nothing happens, raise latent clouds, symbol bait, or rim shadow.
H hide/show · R reseed · D dot · S session · Esc exits fullscreen