I can always see extremely fast vibration in the visual field, like dozens per second at least (maybe hundreds—too fast to tell). It’s like a tv station showing snow on an empty channel. That’s what I see in the graininess all the time.
Now, though I am beginning to very faintly see a slower but still very fast vibration overlaying all of the graininess. I see this sometimes but not always. It’s very fast—faster than I can label it. Maybe 10-20 per second. In this case do you just label as fast as possible and try to keep up?
Ok an update on my experiences: a few days ago I sat and had less wandering and odd visuals, and then I had a strong tingling sensation starting at my neck and running down my body. Like shivering but no actual body movement—stronger than my previous tingling and different. This one travelled through the body. This happened over and over about 10-15 times. I was noting things like happy, calm, excited. It was pretty enjoyable, almost sensual. I was not aware meditating can produce these odd sensations. It’s very interesting. Since then I have had a small amount of that but not nearly as much. Also I am easily irritated afterwards and am now a bit anxious. I am also noticing small jerks and stutters in my breath. It’s chunky when I focus intently on it. Also getting these things where I suddenly realize “something” happened like I fell asleep and woke suddenly. Also today i was looking at myself in the mirror for a long time and then it was like my face looked frightening to me and there was actual fear. Very interesting. I was skeptical but this is producing bizarre effects and I’m bored so I’ll see where this goes and keep investgating.