Given the immense amount of information processing that takes place in each hemisphere, it seems certain that even a normal human brain will be functionally split to one or another degree. Two hundred million nerve fibers seem insufficient to integrate the simultaneous activity of 20 billion neurons in the cerebral cortex, each of which makes hundreds or thousands (sometimes tens of thousands) of connections to its neighbors.47 Given this partitioning of information, how can our brains not harbor multiple centers of consciousness even now?
