Like many others I watched the BBC's "The Secret You" video (I chose to watch the section regarding the differences in consciousness while awake and asleep.) In the video, the host travels to a lab at the University of Wisconsin Madison and has his waking brain activity monitored by an EEG while the researcher also administered low-level electrical shocks to certain areas of his brain. The purpose of this was so they would be able to compare how the shocks travel and are transmitted through a waking brain versus a sleeping brain. Unfortunately, the host was unable to fall asleep in the sleep lab so they had to explain the results that they obtained from previous volunteers. Apparently, when the shocks are administered to a waking brain they travel from the point where the shock occurred to other parts of the brain while the same shocks administered while asleep stay localized and were not transmitted throughout the brain. This led the researchers to conclude that a large part of consciousness is the ability of the brain to communicate within itself. This makes sense to me, but I wonder what brain activity would look like when a sleeper was experiencing lucid dreaming. Would the brain act as if it were fully conscious, unconscious, or somewhere in-between? For that matter, if different areas of the brain are unable to communicate during sleep, how exactly does dreaming work?