The human brain is actually two brains each capable of advanced mental functions. When the cerebrum is divided surgically, it is as if the cranium contained two separate spheres of consciousness ...

It seems that they may have benefitted from a double brain-boosting effect: from the mental challenge of learning a new skill, and from being more active physically. Although in our experiment we ...

or from split brain experiments, which are experiments done on patients who had their brain split in half by neurosurgeons ...