Riemann Zeta
Bluelighter
^^I use the exact opposite classification scheme: since 'hallucinogen' is such a pejorative word in society and--in my opinion--5-HT2A agonists don't actually cause proper hallucinations, they cause visualizations. The difference is that true hallucinations span across modalities, true hallucinations have context--smoking a cigarette while talking to an old friend (sans a corporeal cigarette or another person in the room) is a hallucination. Anticholinergics are probably the best examples of pure-bred 'hallucinogens' out there.
As for the NMDA-receptor antagonists, I like the proposal that a friend of mine gave me: that these are best called "entheogens" for their ability to engender spiritual-feeling, near-death-experience-like effects, but not "psychedelics," as they essentially remove consciousness and cognition. Salvia is clearly another entheogen (although I've never gotten any effect from it).
Cannabis... That's a tricky one. I can only think of cannabinoids as their own thing. Opioids as well. Each has its own distinct qualitative phenomena, something that is shared (with certain individual 'flavor,' obviously) by all the compounds in the class, but it's not similar to the feelings generated by any other class of compounds. I know that certain people attempt to classify cannabinoids as simply "weak hallucinogens" (meaning 'weak psychedelic'), but I just don't see it. It is not as if weed is just a low-potency form of say, mushrooms--if I smoke a bunch of weed, it is not as if I will experience an incrementally accumulating psychedelic experience.
As for the NMDA-receptor antagonists, I like the proposal that a friend of mine gave me: that these are best called "entheogens" for their ability to engender spiritual-feeling, near-death-experience-like effects, but not "psychedelics," as they essentially remove consciousness and cognition. Salvia is clearly another entheogen (although I've never gotten any effect from it).
Cannabis... That's a tricky one. I can only think of cannabinoids as their own thing. Opioids as well. Each has its own distinct qualitative phenomena, something that is shared (with certain individual 'flavor,' obviously) by all the compounds in the class, but it's not similar to the feelings generated by any other class of compounds. I know that certain people attempt to classify cannabinoids as simply "weak hallucinogens" (meaning 'weak psychedelic'), but I just don't see it. It is not as if weed is just a low-potency form of say, mushrooms--if I smoke a bunch of weed, it is not as if I will experience an incrementally accumulating psychedelic experience.

