The Effects of Psychedelics on Cognitive Function

I'm curious about the research that's most exciting to you with regards to psychedelics. Is your intuition telling you that there are permanent lasting neural traits created by repeated use of these things, or does it create a dependency? I see it a little bit like an SSRI, like an antidepressant drug that it doesn't produce a lot of effects directly of its own, but it makes you feel better over time. The question of whether you, whether there are any adverse effects when you stop using is another question remains to be seen.