The 'states' that you are talking of is of Consciousness, which is the power of discernment in variety of ways -- not only in human way. States are not the consciousness itself.
If you want an analogy, the three states of water is a good one. Water itself assumes three forms. Consciousness assumes three forms: waking, dreaming, and deep sleep. The states are not consciousness in itself.
Further, the following will show how petty many of our notions of consciousness are. Consciousness and its manifestation -- discernment, is not limited to brain.
Plant Intelligence: An Overview | BioScience | Oxford Academic
The secrets of intelligence lie within a single cell
Microbial intelligence - Wikipedia
Scientists Discover That Slime Mold Is Capable of Learning
A single-celled organism capable of learning
Further, if you knew Quantum Mechanics, you would know that paired photons when separated many miles know the state of each other instantaneously. So, human type of discernment is not the only type of discernment in the universe.
On the contrary, a body-brain is never known in absence of a discerning consciousness. Whereas a dead body or a dead brain does not exhibit consciousness. Consciousness is not the fundamental property of brain or body. What makes bodies conscious is beyond our mind.
As shown above from scientific papers, consciousness is exhibited by brain-less organisms too.
Yes. This is the question that I will ask. What is absent from a dead body that the brain therein loses its so called consciousness creating power?
No. Some people say that there is no consciousness when we are in deep sleep. Then how do we know that we slept? How does a person 'xyz' come back as 'xyz'? There is surely a connecting consciousness that manifests in three different states of waking, dreaming, and sleeping.
The point is: consciousness is not same as the manifest conscious mind, which is a manifestation.
Okay. I see that you call yourself 'Truly Enlightened'. But if your intelligence is a created artefact of a mechanistic process, how will your intelligence be free to determine the truth value of a proposition? As, its results are already 'pre-determined' by the mechanistic process, how does it have any freedom to discern the truth of any proposition? Your intelligence is just an appearance.