Browsing: Consciousness

Imagine that a loved one, let’s say your brother, has suffered a serious brain injury. After languishing in a coma, he finally “emerges”—that is, he cycles between sleep and wakefulness, yanks his hand away when it’s pricked, is startled by loud noises, and so on. But it’s not clear that he’s ever truly awake; his […]

A pigeon looks at its reflection in the mirror. It sees a blue dot on the reflection’s breast. It reaches down and pecks at the dot on its own breast. This is the classic behavior required for passing the “mirror test,” an influential experiment used to test for self-awareness in animals. Chimpanzees became the first […]

In his most recent book, Consciousness: Confessions of a Romantic Reductionist, Christof Koch wrote that he has known only one genius: Francis Crick, co-discoverer of the structure of the DNA molecule. “In a lifetime of teaching, working and debating with some of the smartest people on the planet, I’ve encountered brilliance and high achievement, but […]

Any self-respecting pet owner will confidently claim that their dog or cat (or rabbit, or gerbil) seems sentient, exhibiting a distinct temperament and emotional responses. I know my many beloved pets over the years could feel pain, and fear, as well as love and trust. But are our pets truly conscious creatures? Or are we […]