The default space model is a unified theory of consciousness that posits the brain and body together form the foundation of conscious experience that exists as a three dimensional internally generated simulation of reality termed the 3D dynamic default space. We have explored and developed the model in many publications and journals with a variety of academic specialties and its scope and concepts continue to broaden. In these publications, we have supported the concepts of the model through its ability to explain neuropsychological disorders, illusions, and everyday observations on consciousness. The model's foundations in which the thalamus serves as a central hub networked with the brain and body by continuous, fast, membrane potential oscillations have been greatly expanded since its initial publication which we review within this article. Profound leaps forward in our theory include the nature of lateral inhibition in sensory perception, the nature of sensory organs acting as "smart screens", and the correlation of respiration with mental atmosphere. Through reviewing the developing concepts expanding the theory since our major 2015 publication that laid the foundation of our theory, we hope to give readers a summarized update of where the theory currently stands in terms of its structure. We encourage readers to investigate these previous publications to gain further insight into our propositions. Through accurate models of consciousness, we may develop etiologies for countless neurological disorders, as well as improve treatments.