The Origin of Consciousness in the Breakdown of the Bicameral Mind
The Origin of Consciousness in the Breakdown of the Bicameral Mind (1976) is a controversial work of popular psychology by Julian Jaynes in which he proposed that consciousness emerged relatively recently in human history.Jaynes asserted that until the times written about in Homer's Iliad, humans did not have the interior monologue that is characteristic of consciousness as most people experience it today. Instead, he believed that something like schizophrenia was the typical human mental state as recently as 3000 years ago.
Jaynes described this state as a bicameral mind by analogy with bicameral legislatures and parliaments. Jaynes believed that preconscious humans effectively had a split brain which allowed one part of the brain to appear to be "speaking" to another part. Jaynes built his case for this theory by citing evidence in the Iliad, studies of schizophrenics, and other diverse sources.
According to Jaynes, the breakdown of this bicameral mind into an integrated system led to modern consciousness, by allowing the creation of a continuous internal narrative.
Jaynes' hypothesis found little acceptance among mainstram academics, although it created great controversy when first published, and provided impetus for many other scientists and philosophers to investigate the matters it discussed in detail in order to attempt to refute its arguments.
It has also been great fodder for cyberpunk authors; Neal Stephenson's first several books (The Big U, Zodiac, Snow Crash, The Diamond Age) involve the bicameral mind theory, as does Bruce Sterling's Distraction.
The book was originally published in 1976 (ISBN 0395207290) and was nominated for the National Book Award in 1978. It has since been reissued (ISBN 0618057072).