Are the waves of of color you see when you stare at one point

They aren't random, what type of meditation do you perfom?

>>19514530
Just sad against a wall on a bed staring at one point and tried to clear my head (not thinking). Nothing fancy

>>19514577
sat* not sad. ffs haha

>>19514439
just your brain filling in blank space with random shit, kinda like when you use isolation chambers

>>19514596
That's what I thought. I was interested because they were rhythmical and regular. At a freq. of about 0.5 HZ. Now I looked up and they might be 'basic cortical rythms'.