"Theories are like toothbrushes," it's sometimes said. "Everybody has their own and nobody wants to use anybody else's." It's a joke, but when it comes to the study of consciousness—the question of ...

THE nature of consciousness is notoriously hard to crack and there are so many speculative ideas about it that it is hard to keep track of them. Another book on the subject may seem one too many, but ...

Christof Koch is taking on one of science’s deepest mysteries: how the brain creates conscious experience, or whether it ...

"Fast asleep? It is no matter; Enjoy the honey-heavy dew of slumber: Thou hast no figures nor no fantasies, Which busy care draws in the brains of men; Therefore thou sleep'st so sound." —William ...

How consciousness arises in the brain is no clearer after two big theories go head-to-head, but the competition's design could push the field forward. “Theories are like toothbrushes,” it’s sometimes ...