I argue that dreaming is not a parallel state but that it is consciousness itself, in the absence of input from the senses,” said Dr. Llinás, who makes the case in the book “I of the Vortex: From Neurons to Self” (M.I.T., 2001). Once people are awake, he argued, their brain essentially revises its dream images to match what it sees, hears and feels — the dreams are “corrected” by the senses.
Interesting thoughts from the article Mind - Dreams as Anticipation for the State of Being Awake.
Source: The New York Times