NOVA: What Are Dreams?

Discover what your nocturnal visions might be trying to tell you as a team of respected dream researchers conduct a series of psychological and neurological experiments designed to provide answers about one of the human mind's greatest mysteries. Some people believe that dreams help us to sleep soundly, while others speculate that they provide us with the tools needed to address problems in our waking lives. And for those who suffer from such well-documented sleep disorders as night terrors and sleepwalking, dreams can be a deeply unsettling and potentially dangerous experience. Whatever their purpose may be, dreams play a prominent role in all of our lives, and with this investigation we come one step closer to understanding what they could really be trying to tell us.