I am curious about a rhythm that I can see. Where is it coming from?
Sitting relaxed for about ten minutes, eyes closed, yet looking at the "red noise" of the back of my eye lids I was conscious of a sudden brightness that kept repeating. I counted six second intervals with the flare lasting about half a second. The flare seemed to be composed of an array of light spots across part of my "vision" that moved slightly downward. I have been able to find nothing about such a rhythm occuring in eyes or brain. I have been conscious of this now for about ten years. It does not interfer with normal vision. Has anyone else experienced this?
It reminds me of that subconscious switching rhythm that happens when you look at the trick image of "duck or rabbit". Every few seconds you see the image in its duck or rabbit configuration.