These are nerves, and the flow of life. The dots are the mysterious spots of light on the flow of life.
If you take those lights away, the nerves will only follow their usual routines for habitual actions. But when you put the spots of happiness in, the nerves and the flow of life become happy too.
This is how the reading came to me.
This view is not scientific for sure. But it comes from being in a meditative state. It is dream-like and feels good. The process that I go through has brought me to a good state.
When we feel good, more unhappy habits float to the surface. They can’t survive in a happy environment. It is a chance to take care of them. This is why we go up and down.