Consciousness as the spin-off and schizophrenia as the price of language
Advances in Consciousness Research October 28, 2010 Timothy J. Crow
The human brain's torque—the twisting asymmetry that creates four distinct chambers of association cortex compared to the two chambers in other mammals—is the feature that enables language by separating thought from speech production in the frontal lobes and meaning from speech perception in the occipito-parieto-temporal cortex. Psychotic symptoms such as hearing voices, experiencing thoughts as not one's own, and incoherent speech can be understood as leakage between these four quadrants. Consciousness is a byproduct of this arrangement, and schizophrenia is the price humans pay for language.