The Cambridge Declaration on Consciousness

Almost one year ago, an international group of prominent scientists signed The Cambridge Declaration on Consciousness in which they proclaimed:

“The absence of a neocortex does not appear to preclude an organism from experiencing affective states. Convergent evidence indicates that non-human animals have the neuroanatomical, neurochemical, and neurophysiological substrates of conscious states along with the capacity to exhibit intentional behaviors. Consequently, the weight of evidence indicates that humans are not unique in possessing the neurological substrates that generate consciousness. Nonhuman animals, including all mammals and birds, and many other creatures, including octopuses, also possess these neurological substrates.”

The body of scientific evidence is increasingly showing that most animals are conscious in the same way that we are, and it’s no longer something we can ignore.  What’s also very interesting about the declaration is the group’s acknowledgement that consciousness can emerge in those animals that are very much unlike humans, including those that evolved along different evolutionary tracks, namely birds and some cephalopods.

“The absence of a neocortex does not appear to preclude an organism from experiencing affective states,” they write, “Convergent evidence indicates that non-human animals have the neuroanatomical, neurochemical, and neurophysiological substrates of conscious states along with the capacity to exhibit intentional behaviors.”

Consequently, say the signatories, the scientific evidence is increasingly indicating that humans are not unique in possessing the neurological substrates that generate consciousness.

The group consists of cognitive scientists, neuropharmacologists, neurophysiologists, neuroanatomists, and computational neuroscientists — all of whom were attending the Francis Crick Memorial Conference on Consciousness in Human and Non-Human Animals. The declaration was signed in the presence of Stephen Hawking, and included such signatories as Christof Koch, David Edelman, Edward Boyden, Philip Low, Irene Pepperberg, and many more.