It sounds like an oxymoron, but we could find the origin of consciousness in our brains using the brains of those who are unconscious.
Libero, L.E., Reid, M.A., White, D.M., Salibi, N., Lahti, A.C., Kana, R. K. Biochemistry of the Cingulate Cortex in Autism: an MR Spectroscopy Study. In Press, Autism ...