First of all, I thought that this post would be most nearly concerning neuroscience, but please correct me if I am wrong so it can be moved. Second, this is pure speculation without any facts to back it up, or appropriate knowledge of this field, so again, correct me if I am wrong. After seeing the new movie Inception last night, one thought that stuck with me was how time progressively slowed down as the characters went deeper down into one's subconscious. Although the movie was pure fiction, I couldn't help but wonder a few things: 1. In order for time to appear slower in the subconscious relative to a more active state of awareness, there would have to be some sort of increase in "velocity" in the brain. 2. This "velocity" could be analagous to a changing percentage of a brain's full capabilities. 3. I have heard that the brain does in fact expend more of it's energy during dreams. 4. To sum it all up, If our brains work in a more complex way during dreams, then while we are within a dream it would appear to an outsider that a person in a dream would be in a different reference of time. This could be a factor in the apparent "strangeness" of dreams after we have woken up from them, and the inability to remember far back within the dream. Again, this is all speculative and well outside my realm of knowledge, but I would appreciate it if any of you that are more knowledgeable on the subject could voice your input.