From Ferris Jabr at Scientific American:
Consciousness, most scientists argue, is not a universal property of all matter in the universe. Rather, consciousness is restricted to a subset of animals with relatively complex brains. The more scientists study animal behavior and brain anatomy, however, the more universal consciousness seems to be. A brain as complex as the human brain is definitely not necessary for consciousness. On July 7 this year, a group of neuroscientists convening at Cambridge University signed a document officially declaring that non-human animals, “including all mammals and birds, and many other creatures, including octopuses” are conscious.
Jabr makes a useful distinction between “conscious” and “self-aware.” Self-awareness is supposed to reside in the cerebral cortex, which is much more developed in humans than in any other life form.
One would expect, then, that a man missing huge portions of his cerebral cortex would lose at least some of his self-awareness. Patient R, also known as Roger, defies that expectation. Roger is a 57-year-old man who suffered extensive brain damage in 1980 after a severe bout of herpes simplex encephalitis—inflammation of the brain caused by the herpes virus. The disease destroyed most of Roger’s insular cortex, anterior cingulate cortex (ACC), and medial prefrontal cortex (mPFC), all brain regions thought to be essential for self-awareness. About 10 percent of his insula remains and only one percent of his ACC.
Despite the brain damage, he still has a sense of self. And even some hydrancephalic children “give every appearance of genuine consciousness. More.”
Jabr references a 2007 paper, “Consciousness without a cerebral cortex: A challenge for neuroscience and medicine”
See also: Are newborn babies really not conscious?
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Or else: Consciousness as a state of matter
Researcher: Never mind the “hard problem of consciousness”: The real one is… “Our experiences of being and having a body are ‘controlled hallucinations’ of a very distinctive kind”
Searle on Consciousness “Emerging” from a Computer: “Miracles are always possible.”
Psychology Today: Latest new theory of consciousness A different one from the above.
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Claim: Science is afraid of animal consciousness. Why? Won’t crackpot theories work as well as they do for human consciousness?
So then: Question: Would we give up naturalism to solve the hard problem of consciousness?
Neuroscience tried wholly embracing naturalism, but then the brain got away
Science fictions series 4: Naturalism and the human mind