Made up of a dozen billion microscopic nerve-cell units interconnected by millions upon millions of conducting nerve-threads weaving incredibly intricate patterns, the brain, as an object of research, presents a defiant challenge to its own ingenuity.

Made up of a dozen billion microscopic nerve-cell units interconnected by millions upon millions of conducting nerve-threads weaving incredibly intricate patterns, the brain, as an object of research, presents a defiant challenge to its own ingenuity.