My late father, Richard Bergland (1932-2007), was born near the Badlands of Montana to Norwegian parents who were missionaries at the time. Although my dad grew up very poor, he did have access to a ...

In Nobel Prize research beginning in the 1960s, Roger W. Sperry and colleagues studied the effects of cutting the forebrain commissures in patients as a radical treatment for intractable epilepsy.

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 ...