According to the famous work of Roger Sperry and Michael Gazzaniga, “split brain” patients seem to experience a split in consciousness: the left and the right side of their brain can independently ...

In 1882, Mr. L, a teacher and journalist, suffered a stroke, his second. His first attack, five years earlier, had been mild, causing some language problems involving paraphasias, difficulty selecting ...

But researchers were concerned about whether this procedure might have other, less desirable effects. What happens when the right and left sides of the cerebral cortex—responsible for an enormous ...