Yup, here is the post. I've been doing a lot of research on this lately. If you want any suggestions for academic papers/books, let me know!Wasn't there a post on Ayahuasca recently?
Neither have I. However, these drugs appear to have ritual/spiritual/religious properties. Clearly there is a lot of misinformation out there about their nature. From what I've read, we have no idea what this experience is yet.
If you're interested in more research, MAPS held a conference back in 2013 in which they invited psychedelic researchers from a variety of fields to come and speak. They've hosted the videos online here. If you look under "Ayahuasca Track," you can see the talks specifically about ayahuasca. I haven't seen most of them since I spent most of my time checking out the interdisciplinary and clinical tracks, but what I did see was fascinating. Dennis McKenna was pretty good.