I have had some interesting experiences, the most challenging being DMT. It worked in the following way. During our daily lives, all inputs from out senses are

I have had some interesting experiences, the most challenging being DMT. It worked in the following way. During our daily lives, all inputs from out senses are filtered. I imagine that the brain filters the "raw steam" because it is way to much data to consistently process effectively. I think this is why you tend to notice things that have been moved in a room, even if you might not immediately know what it was that had moved. I believe that game programmers use these kind of visual screen drawing tricks all the time. DMT gives you the ability to see the world without filters for a short period of time. At some point during that unfiltered view the brain can't take it anymore, and it reboots. Both parts of this experience are both fascinating and terrifying. When you reboot, there is no you. No ego. It takes a while for the brain to work out what you are, before who you are, and then finally what the fuck just happened! It's nickname is "the businessman's trip". There is no come down.