Yea I have read about it as well Robert Bruce on Astral Dynamics said it is called Cobwebs and is a common thing. At one point I figured that was what it likely was along with the random feeling of touching, that is until I got deep into a meditation session one time and felt it actually touching me with it's hands. I then snapped out of it and it felt like the so called Cobwebs, that is when I made the connection. At first I figured it was my subconscious mind trying to make sense out of the feeling when I was in a hypnagogic state, but now I am really not so sure about it. I am also very curious why it also causes me to have muscle spasms, I think it has something to do with energy/electricity.