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Assignment # 11 Hadjar Homaei November 26, 2006 A Computational Model for Interhemispheric Switching and its Correlates of Consciousness Neuroscience hypothesizes that consciousness is generated by the interoperation of various parts of the brain, called the neural correlates of consciousness, or NCCs. Proponents of Artificial Consciousness believe computers can emulate this interoperation, which is not yet fully understood. There is a neural link between the left and right hemispheres of the brain, known as the corpus callosum. This link is sometimes surgically severed to control severe seizures in epilepsy patients. Tests of these patients have shown that, after the link is completely severed, the hemispheres are no longer able to communicate, leading to certain problems that usually arise only in test conditions. For example, while the left side of the brain can verbally describe what is going on in the right visual field, the right hemisphere is essentially mute, instead relying on its spatial abilities to interact with the world on the left visual field. And some experiments show that each hemisphere is not conscious of what the other hemisphere sees or experiences. This fact has been examined at different levels of conscious experiences, Phenomenal consciousness and Access consciousness. Some say that it is as if two separate minds now share the same skull, but both still represent themselves as a single "I" to the outside world. The purpose of this envisioned thesis is to develop a computational model for the corpus callosum, using the currently available neuro-anatomical data and simplify it to a minimal level that by eliminating each part it can exhibit the phenomenal consciousness deficits that is seen in split brain patients. In the ideal condition we can do the surgery on mice or monkeys and investigate the effects on Access consciousness in depth.