I don't know much about the actual chemistry involved, but I do know that a relaxed waking state is the same brainwave frequency in the vast majority of dreams. This is an obstacle in brainwave entrainment(the trick to to go below dreaming, then back up to prolong the dream state). Also, the logic centers in the brain shut down during sleep of any type, it is believed that it is this deactivation that prevents us from becoming lucid in every dream and accounts for the general weirdness. |
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