At lecture, Helen Mayberg presented findings showing electrical impulses in the brain can induce long-term benefits in patients.

Carole Rainey, whose name has been changed to protect her privacy, started to notice something wasn't quite right with her husband, Bill, when he began to ramble in a way that was unlike him.

For 150 years, Broca's area has defined speech production. Now scientists have discovered a second parallel system that controls the melody and rhythm of how we speak and sing.