Dreaming as Delirium

Dreaming as Delirium: How the Brain Goes Out of its Mind, by J. Allan Hobson
Hobson argues that dreams are not unlike the hallucinations that schizophrenics experience; if we see meanings and patterns in our dreams, it is because the brain likes to seek out coherence. Hobson is a leading psychiatrist and neuroscientist at Harvard University.
Dreaming as Delirium: How the Brain Goes Out of its Mind. MIT Press, 1999.
See also Hobson’s earlier work: The Dreaming Brain: How the Brain Creates Both the Sense and the Nonsense of Dreams

