Domnauer is overstating the "little people" effect here. Seeing miniaturized people seems to be only one of several manifestations associated with these mushrooms. This Wikipedia article (https://en.wikipedia.org/wiki/Hallucinogenic_bolete_mushroom) is a lot more informative. To me, it sounds like it could actually be a serotonergic substance, but it's not clear. I hope they find the active constituent!