Most can’t, I’m sure those who are genuinely enlightened can. I’m experiencing my interpretation of my “self”, but to understand consciousness, you’d have to be aware of consciousness itself. To explain in a more tangible way, DMT is a substance that can alter cortical waves. In this sense it “hyper drives” our consciousness. But because of the limitations of the brain, everything we learned through that experience is no longer explainable because we come back to baseline consciousness. Like trying to explain our perceptions of consciousness to a dog. Just because we were able to show it what our experience is, doesn’t mean he will be able to understand it.