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 ...

Brody Shain was born with a birth defect that caused his face to form in two halves. Now, with the first of many surgeries, ...

Severing the connection between the two halves of the brain reveals how the hemispheres function. The two hemispheres of the brain communicate via a bundle of fibers called the corpus callosum. For ...