From what I remember Koch and Tononi measure consciousness in Phi ( and phi is complexity) I remember a conversation at Towards a Science of Consciousness conference about this. If Phi is measured in complexity you could make a glass window complex and that is conscious.
Also during Tononi's talk a guy walked through the isle and said something along the lines of 'Phi is the answer, Phi is god, Tononi is our savior'
Thoughts on Phi?