Ayahuasca is driven by sound, by song, by whistling. And its ability to transform sound, including vocal sound, into the visual spectrum indicates that some kind of information processing membrane or boundary is being overcome by the pharmacology of this stuff. And things normally experienced as acoustically experienced becomes visibly beheld, and it's quite spectacular.
Terence McKennaThe psychedelic mind is a higher dimensional mind, it is not fit for three dimensional space time.
Terence McKennaThere is no mundane dimension really, if you have the eyes to see it, it is all transcendental.
Terence McKennaWe are an intelligent species caught in an historical process. No generation which proceeded us knew what was going on, and there is no reason to assume that we know what's going on or that the generation which follows us will know what's going on. And what kind of trip is it anyway to insist on knowing what's going on?
Terence McKenna