What Are the Differences Between the Brain Hemispheres?

Stephanie Harme meets doctor een mc gilchrist on the isle of sky off scotland. She asks him to give her a synopsis of what he's been working on for 25 years. He explains how people with right-hemisphere strokes are unable to understand anything that isn't formulaic and explicit. The meaning of things not said as much as what being said, tone of voice in which they're conveyed - all this is completely lost on the left hemisphere.