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Supporting Evidence: New Research
Supporting Jaynes' Bicameral Mind Theory

Dual Brain / Double Brain Theory

Supporting Evidence > Dual Brain / Double Brain Theory


Julian Jaynes describes an earlier mentality prior to the development of subjective consciousness called the bicameral mind, in which the brain's hemispheres operated in a less integrated manner than they do today. Jaynes argues that the brain used language to convey experience in the right hemisphere to the left hemisphere in the form of what we would today call an auditory hallucination. Studies from both split-brain and hemispherectomy patients have confirmed that the brain hemispheres can operate both independently and in isolation. Below is a small sample of research supporting this aspect of Jaynes's theory.


Mental Duality in the Anatomically Intact Cerebrum
Bogen, Joseph E. Presented in part as the outgoing Presidential Address to the Los Angeles Society of Neurology and Psychiatry on 19 January 1983. Portions of this essay have appeared in the following: D.F. Benson and E. Zaidel, eds. The Dual Brain (Guilford, NY, 1985); F. Lepore, M. Ptito, H.H. Jasper, eds. Two Hemispheres, One Brain? (Alan Liss, NY, 1986); and C. Trevarthen, ed. Brain Circuits and Functions of Mind (Cambridge: Cambridge University Press, 1990).

Conscience and Commissurotomy
Leiber, Justin. Psycoloquy, Dec. 1993, 4 (52).

Counting the Minds of Split-Brain Patients
Lokhorst, Gert-Jan C. Logic & Analysis, Sept.–Dec. 1996, pp. 315–324.

One Mind Too Many?
Pessin, Andrew. Psycoloquy, Dec. 1993, 4 (52).

Brain Bisection and Personal Identity
Puccetti, Roland. The British Journal for the Philosophy of Science, Dec. 1973, 24 (4): 339-355.

Two Brains, Two Minds? Wigan's Theory of Mental Duality
Puccetti, Roland. The British Journal for the Philosophy of Science, June 1989, 40 (2): 137-144.

Mind with a Double Brain
Puccetti, Roland. The British Journal for the Philosophy of Science, Dec. 1993, 44 (4): 675-691.

Dennett on the Split Brain
Puccetti, Roland. Psycoloquy, 1993, 4 (52).

Application of Dual Brain Theory to Cross-Cultural Studies of Cognitive Development and Education
Tenhouten, Warren D. Sociological Perspectives, Summer, 1989, 32 (2): 153-167.

Double Brain, Double Person?
Thornton, M. British Journal for the Philosophy of Science, 1994, 45: 761–763.