^Read The Invisible Landscape or True Hallucinations by the brothers McKenna for more information. The idea went as follows- upon ingesting psilocybe shrooms in the Amazon, Dennis emmitted a strange, unearthly rasping tone. They 'ascertained' that it was the resonant frequency of psycilocybin. Further conjecture lead them to (somehow) believe that by using a living mushroom as a machine, and with harmine/ayahusca and mushrooms already present in the body, by emitting the same rasping buzz at the mushroom-machine, a standing wave would be created (resonant frequency feedback) which would by some arcane process, allow the harmine/b-carboline to fuse permanently with Dennis' DNA. The whole thing is more a fascinating adventure tale then anything; plausible if you are on mushrooms themselves, and scinetifically interesting- but whther its fact, who knows?
The end result was that Dennis was locked in a psychedelic/psychotic state for two weeks- he believed he was telepathic, and could 'phone' anyone in the world with his mind, he had ocntinuous prophetic visions, and basically raved on, slowly abating after a fortnight. Terence for some reason stayed awake for 9 nine days staright (they had stopped taking mushrooms by then) going through something like a complete defrag of his brain, whereby a "mushroom" spoke to him- this same voice remained with him for his whole life. He also saw a UFO

So whetehr they did what they believed is imposible to say; but regardless, something VERY strange did happen to the McKenna's. They ended up being airlifted out, as their travelling companions were quite rightfully concerned for their sanity. Both returned to 'baseline'.
Read the two books; the experience I just mentioned is the formation of the beginning of all Terence's ideas- the Timewave Zero theory, mushroom cultivation (he cultivated mushrooms orignally from the spores of the same mushrooms they'd encountered in the amazon) etc. As always, the tales are told with much self-irony and wit, as well as that convincing, nerdy way Terence has of expressing really far out ideas as plausible.
