Before revision:  By reconsidering the nature of energy and recasting its role in neural activity, we arrive at a theory of consciousness that is consistent with the laws of physics, chemistry and biology. The argument draws on the integrated information theory (IIT) developed by Tononi et al. but reinterprets their findings from the perspective of energy exchange. In IIT, the conscious state in a system, such as a brain , is defined by the quantity of integrated differences, or information, it contains .
After revision:  By reconsidering the nature of energy itself, though, remains largely mysterious, and we do not fully under-stand how it contributes to brain function or consciousness .