The psychedelic effect, if present at all, may have finally been revealed, if what I've just read may be correct. Apparently, besides the GABA-a receptor, ethanol also has effects upon the muscarinic receptors as well. Thus thujone, the main psychoactive ingredient in both wormwood and sage, as well as a number of other plants and herbs, being a GABA-a receptor antagonist, effectively blocking the effects of alcohol on the inhibitory and sedative GABA-a receptor, enhancing the muscarinic effect, and thus causing possible pseudo-psychedelic effects.