A new essay on consciousness has been published by G. Nagarjuna titled, Muscularity of Mind: Towards an Explanation of the Transition from Unconscious to Conscious (PDF format). In it, he attempts to explain the origin of consciousness through the "physiological coupling that exists between neuro-sensory and muscular system". Nagarjuna believes previous research has focused too much on the idea that consciouness is a product of the nervous system and sensory input, ignoring any contribution from voluntary muscles. He provides the example of humans and animals being able to touch every part of their body by moving their appendages, thus creating an "auto-generated perceptual field". He seems to suggest that the more time a creature spends using its own sensory equipment to study and manipulate its own body, the more likely it is to generate internal models of itself that lead to self awareness and consciousness.