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A possible answer, I just came across in a book:

"In neurological terms, such experiences (spiritual practice) represent a reorganizing of activity in the brain as a whole. The loss of ego boundary and the involvement of all senses suggests that the Reticular formation is being influenced so that the processes which normally convey a sense of being rooted in space-time are inhibited. The "floating" sesation often associated with astral projection suggests that the Limbic system is also acting in a unusual mode."

I sometimes see the same thing although i haven't really been working at aura seeing.
My guess is that yeah it's probably that you're beginning to see auras. I'm no expert or anything, just my thought.

okay, I just read the section in Astral Dynamics about Remote-ey viewing. That answers my second question.