Dreams are simply nocturnal and ambiguous phenomena to most people.
They lay down to sleep without much thought of the experiences yet to intervene. The end of their slumber finds them in a similar state of mind, usually oblivious to the previous night's journey . Dreams may be conceptualized as thought processes or mental experiences which occur in a polysomnographically suggested state of consciousness that is different from the awake state. This definition allows a variety of experiences occurring in many states of consciousness to be called dreams . The Centre for Sleep and Dream Studies, Ottawa, Canada.