'It was a FrIday afternoon when Professor Charles approached my desk, placed upon it a large book and a piece of paper and said, ‘Have a go at mapping this.’ The book was The Rat Brain in Stereotaxic Coordinates, 6th Edition and the paper depicted a coronal cross-section of a rat brain. As a seventeen-year-old ostensibly employed in his ofce to scan things, I was unqualifed for this particular task.' (Introduction)