Before revision:  Many contemporary neuroscientists regard the brain as an information processor. However, evidence from brain imaging experiments demonstrates that the brain is actually a voracious consumer of energy, and that functionality is intimately tied to metabolism. Maintaining a critical level of energy in the brain is required to sustain consciousness, and URLanisation of this energy distinguishes conscious from unconscious states.
After revision:  Energetic activity is fundamental to all physical processes and causally drives biological behaviour. Recent neuroscientific evidence can be interpreted in a way that sug-gests consciousness is a product of URLanization of energetic activity in the brain is required to sustain consciousness, and URLanisation of this energy distinguishes conscious from unconscious states.