Hi, I'm Gerald Thomas from BC,  Canada, and I'm just wondering: the subjective effects of ayahuasca  vary greatly in the experience, and I wonder, in this connectivity  between the front and the back and the flip-flopping you saw  of that, which is dominant, in those instances where people  don't report much of an effect, because I've been in ceremony  where that's the case, nothing really happens, were you able  to differentiate who was having that flip-flop, and what degree,  and how it affected their perceptions of the experience? 