Giulio Tononi has a theory of consciousness based on the flow of information. "...he has untethered the theory of consciousness from the physical brain."
New theory doesn’t limit consciousness to the brain
If Tononi is right, and integrated information actually is consciousness, then consciousness itself is no longer restricted to the inside of a head. As long as it has the right informational specs, any system, whether it’s made of nerve cells, silicon chips or light beams, could possess consciousness.Such a realization alters the consciousness conversation. In a world full of objects that can move information around quickly — an octopus’s brain, a tree’s root system, the Internet — the discussion of whether an entity is conscious may lose its meaning. Instead, the question becomes, “How conscious is it?”